Subscribe! Because SMART IS THE NEW SEXY: https://goo.gl/JTfP6L How long does it take to get to… Space trips are one of the popular human dreams. Imagine that human techonolgies allow us to move with the speed of light 186,282 miles per second. Where can we go and how fast. And “Smart is the new sexy” have found that information. Do you want to know it? So, sit down and listen. We start. Many thanks to Jared Owen and his video “How the Apollo spacecraft works”: https://youtu.be/8dpkmUjJ8xU (we use it on 4:47). His channel https://www.youtube.com/user/captainranic is great! ---------------------------------------------------------------------------------------- Our Social Media: Facebook: http://facebook.com/enjoy.science/ The Bright Side of Youtube: https://goo.gl/rQTJZz 5-Minute Crafts Youtube: https://www.goo.gl/8JVmuC ---------------------------------------------------------------------------------------- For more videos and articles visit: http://www.brightside.me/
Views: 1493682 SMART BANANA
Is interstellar travel doomed to remain in the realm of science fiction? Sticking to near future space propulsion only, how close can we get to the speed of light? This video looks at the current spacecraft speed records with Apollo 10 holding the record for the fastest manned spacecraft, New Horizons probe for the fastest Earth escape velocity and the Helios probes for the fastest heliocentric velocity. But Solar Probe Plus will beat that when it launches in 2018. While Voyager 1 doesn't set any speed records, it was the first spacecraft to leave the solar system, so therefore the fastest solar system escape velocity by default. For beating these speeds, this video explores what is possible in the near future only, so no antimatter, Alcubierre drives (warp), ramjets, etc... The EM drive is left out until it's proven with actual reproducible results in space. Project Daedalus and the updated Project Icarus represent sound concepts for fusion spacecraft. IKAROS was the first successful demonstration of solar sail technology but hopefully the planetary society is not far behind with their LightSail cubsat (not covered in this video). But what appears to have the most potential to reach the nearest star to our own, Proxima Centauri and it's newly discovered planet Proxima b is Breakthrough Starshot. Thousands of super lightweight laser sail nanocraft will be launched into space then the light beamer, a ground based laser array will propel these spacecraft to 20% light speed within minutes. *All sources used in researching this video are listed in the end credits* Music: "Inspired" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/
Views: 2979234 Jimiticus
*Subscribe: http://goo.gl/dgHQSp The speed of light in a vacuum is 186,282 miles per second (299,792 kilometers per second), and in theory nothing can travel faster than light. In miles per hour, light speed is, well, a lot: about 670,616,629 mph. If you could travel at the speed of light, you could go around the Earth 7.5 times in one second. #sciencetoday #Facts #SpeedofLight FAIR-USE COPYRIGHT DISCLAIMER * Copyright Disclaimer Under Section 107 of the Copyright Act 1976, allowance is made for "fair use" for purposes such as criticism, commenting, news reporting, teaching, scholarship, and research. - This video has no negative impact on the original works - This video is also for research and commenting purposes. - It is not transformative in nature. - we only used bits and pieces of videos to get the point across where necessary. If you have any issues with our "Fair Use", please contact us directly, for an amicable and immediate attention. [email protected] Thank you in advance for your understanding and cooperation.
Views: 610143 SCITODAY
670,616,629 miles per hour; that is the speed limit of the universe. Bonus Videos & "Chemicals of Reality" Premium Video Available @ http://www.patreon.com/strangemysteries NEW SISTER CHANNEL "Beyond:" https://www.youtube.com/channel/UCdFur5pgxJtvnmdvHeExeaA Narrated by Jack Daniel www.jackdanielvo.com Ending trailer by Ben Patrick Johnson The speed of light. Nothing with mass can travel faster, and because of this limit, interstellar travel towards stars more than a hundred lightyears away seems problematic, and downright impossible for galaxies that are upwards of millions of lightyears away. But what if we could cheat physics? The theory of special relativity forbids any object from moving at light speed. It doesn't matter how small it is, how much weight it's lost recently thanks to its fancy new diet, it is physically impossible for anything of mass to haul ass directly from A to B at faster-than-light speed. The idea of wormholes being used to cross the galaxy at faster-than-light speed has been discussed at length by sci-fi authors and guys who live in their mom's basement for decades now. In real life, teleportation does not work in the same way it does in the movies. Whereas in Star Trek you can shoot blue lasers at something, dissolve it and have it reappear at another point in space, in reality, what you've just done is destroy the original object and make a copy.
Views: 425752 Strange Mysteries
MIT Media Lab researchers have created a new imaging system that can acquire visual data at a rate of one trillion frames per second. That's fast enough to produce a slow-motion video of light traveling through objects. Video: Melanie Gonick/MIT Read more: http://web.mit.edu/newsoffice/2011/trillion-fps-camera-1213.html Project website: http://www.media.mit.edu/~raskar/trillionfps/ Follow us on Twitter: http://twitter.com/mitnews
Views: 7353126 Massachusetts Institute of Technology (MIT)
The speed of light might seem fast, but what if you went faster than it? Download the new FireFox here: https://mzl.la/lifenoggin Subscribe: https://bit.ly/SubLifeNoggin | Get your exclusive Life Noggin merch: http://keeponthinking.co Support Life Noggin on Patreon: https://patreon.com/LifeNogginStudios Follow Life Noggin! Facebook: https://facebook.com/LifeNoggin/?ref=br_rs Instagram: https://instagram.com/lifenoggin/ Twitter: https://twitter.com/lifenoggin Official Website: https://lnstudios.co/ Watch More Life Noggin: Latest Uploads: https://youtube.com/watch?v=4A6XkYpmidU&list=PL8L0MzSk_V6JtEDRfRMyb6rFd1acqYSlO Big Questions: https://youtube.com/watch?v=rJTkHGXMdb0&list=PL8L0MzSk_V6LtaKh-Eqj7Cs4Tmf5iQPx4 Outer Space: https://youtube.com/watch?v=rJTkHGXMdb0&list=PL8L0MzSk_V6IPWXQvW3Exk9bqGzOdj8Qq Inside the Human Body: https://youtube.com/watch?v=FVnnM6hZ7Wk&list=PL8L0MzSk_V6JoZQ-Sy3eK2rjiDsamxCQs Popular Videos: https://youtube.com/watch?v=1bVfzBD-40E&list=PL8L0MzSk_V6IYeU-cNGR6NYHW19GMiPNy We are LIFE NOGGIN! An animated and educational web show designed to teach you all about your awesome life and the brain that makes you able to live it! We answer questions about everything from inside the human body to deep outer space. Stay tuned for more videos on every Monday and Thursday! Keep On Thinking. Life Noggin Team: Director/Voice: http://lifenogg.in/PatGraziosi Executive Producer - Ian Dokie: http://instagram.com/iandokie Director of Marketing: http://lifenogg.in/JaredOban Animation by Robert Grisham Written by Michael Sago: https://twitter.com/MichaelSago Sources: ftp://umpgal.gsfc.nasa.gov/pub/daac_ozone/Lecture4/Text/X/whatislight.html https://imagine.gsfc.nasa.gov/science/toolbox/emspectrum1.html https://www.grc.nasa.gov/WWW/k-12/Numbers/Math/Mathematical_Thinking/how_fast_is_the_speed.htm https://www.space.com/37244-why-is-the-speed-of-light-so-slow.html http://www.bbc.com/news/uk-scotland-glasgow-west-30944584 http://micro.magnet.fsu.edu/primer/java/speedoflight/ http://hyperphysics.phy-astr.gsu.edu/hbase/geoopt/refr.html https://www.youtube.com/watch?v=VNv0Yzk00qg https://www.britannica.com/science/Cherenkov-radiation https://www.scienceabc.com/pure-sciences/cherenkov-radiation-is-there-a-sonic-boom-equivalent-for-light.html http://math.ucr.edu/home/baez/physics/Relativity/SpeedOfLight/cherenkov.html https://www.space.com/24701-how-long-does-it-take-to-get-to-mars.html https://sservi.nasa.gov/articles/how-far-is-it-to-mars/ https://exoplanets.nasa.gov/trappist1/ https://www.space.com/35796-trappist-1-alien-planets-travel-time.html http://www.trappist.one/#about http://www.phy.olemiss.edu/HEP/QuarkNet/time.html https://www.britannica.com/science/time-dilation
Views: 1408470 Life Noggin
Breaking the sound barrier is considered one of the greatest achievements of aviation, but how exactly did we manage to fly faster than sound? 'Sonic Boom' Of Light Captured For The First Time Ever - https://youtu.be/dHaNBSeEp58 For more epic stories of innovation that shaped our future, check out https://www.theageofaerospace.com Read More: Gen. Chuck Yeager Describes How He Broke The Sound Barrier http://www.popularmechanics.com/flight/a4396/1280546/ The Bell XS-1 No. 1 streaked past the speed of sound that morning without too much fanfare-broken ribs notwithstanding. And when the Mach indicator stuttered off the scale barely 5 minutes after the drop from our mother B-29, America entered the second great age of aviation development. Ultrafast Camera Captures 'Sonic Booms' of Light for First Time https://www.seeker.com/an-ultrafast-camera-captures-sonic-booms-of-light-for-first-time-2206998847.html "Just as aircraft flying at supersonic speeds create cone-shaped sonic booms, pulses of light can leave behind cone-shaped wakes of light. Now, a superfast camera has captured the first-ever video of these events." Can You Survive Breaking The Sound Barrier? https://www.seeker.com/can-you-survive-breaking-the-sound-barrier-1792496708.html "When an object moves through the atmosphere, it has to move the air molecules in front of it out of the way. As objects approach the speed of sound, air forms a "pressure wave" around the object. In order to exceed the speed of sound, it has to pierce that pressure wave, which can be heard by observers on the ground as a sonic boom." ____________________ Seeker inspires us to see the world through the lens of science and evokes a sense of curiosity, optimism and adventure. Visit the Seeker website http://www.seeker.com/shows/?utm_source=youtube&utm_medium=social&utm_campaign=seeker Subscribe now! http://www.youtube.com/subscription_center?add_user=dnewschannel Seeker on Twitter http://twitter.com/seeker Trace Dominguez on Twitter https://twitter.com/tracedominguez Seeker on Facebook https://www.facebook.com/SeekerMedia/ Seeker http://www.seeker.com/ Special thanks to Julian Huguet for hosting and writing this episode of Seeker! Check Julian out on Twitter: https://twitter.com/jhug00
Views: 699519 Seeker
The Speed of Causality Tweet at us! @pbsspacetime Facebook: facebook.com/pbsspacetime Email us! pbsspacetime [at] gmail [dot] com Comment on Reddit: http://www.reddit.com/r/pbsspacetime Support us on Patreon! http://www.patreon.com/pbsspacetime Help translate our videos! http://www.youtube.com/timedtext_cs_panel?tab=2&c=UC7_gcs09iThXybpVgjHZ_7g The speed of light is often cited as the fastest anything can travel in our universe. While this might be true, the speed of light is the EFFECT and not the CAUSE of this phenomenon. So what's the cause? On this week's episode of Space Time, Matt helps explain what the speed of light REALLY is and why it’s the cosmic speed limit of our universe! "The Real Meaning of E=mc²": https://www.youtube.com/watch?v=Xo232kyTsO0 "Are Space And Time An Illusion?": https://www.youtube.com/watch?v=YycAzdtUIko ------------------------------------------------- SOURCES: Einstein's derivation or the Lorentz transformation from the invariant speed of light: Einstein, Albert (1916) "Relativity: The Special and General Theory" http://www.archive.org/stream/cu31924011804774#page/n159/mode/2up Lorentz Transformation without invariant speed of light, from relativity, isotropy, and consistency of frame transitions (closure group postulate): von Ignatowsky, “Das Relativitatsprinzip,” Archiv der Mathematik und Physik 17, 1–24 (1911) Berzi1 & Gorini, J. Math. Phys. 10, 1518 (1969) http://dx.doi.org/10.1063/1.1665000 Pelissetto & Testa, American Journal of Physics, 83, 338, (2015) "Getting the Lorentz transformations without requiring an invariant speed" http://arxiv.org/abs/1504.02423 https://en.wikipedia.org/wiki/Derivations_of_the_Lorentz_transformations ------------------------------------------------- COMMENTS: Denny Hiu https://www.youtube.com/watch?v=AwwIFcdUFrE&lc=z124w3dhotmtx34lk224wzxyhwqufdefe . (RadimaxRadimaX) https://www.youtube.com/watch?v=AwwIFcdUFrE&lc=z124xv145zzkzpiei233spnqjzraejjig04 Epsilon Lazerface https://www.youtube.com/watch?v=AwwIFcdUFrE&lc=z12fv5ejyzyyc1dbv04cgzhyxknfzdnjcao LassieDog999 https://www.youtube.com/watch?v=AwwIFcdUFrE&lc=z12zz13iezrqh142k23kitgxuqjqy35su Tenebrae https://www.youtube.com/watch?v=AwwIFcdUFrE&lc=z134yj2pcvrkhnu4u04ccdxhuufvuvkomd0 ------------------------------------------------- REFERENCES: Krauss & Scherrer 2007 http://arxiv.org/abs/0704.0221 Vardanyan, Trotta & Silk, 2011 http://arxiv.org/abs/1101.5476 ------------------------------------------------- Let us know what topics you want to learn more about:http://bit.ly/spacetimepoll
Views: 3294466 PBS Space Time
Ever imagined what it would be like to traverse the Solar System at the speed of light? This is a video which attempts to re-create the out-of-this world experience. The ultimate ride begins on the surface of the sun, hurling you outwards at 186,000 miles per second, past the orbiting planets, the asteroid belt, until finally the sun appears as a faint glimmer among a sea of other stars. Enjoy
Views: 545949 ogniank
Light travels in waves. Light rays cannot bend to go around something. The light rays are either reflected, absorbed, or refracted. Watch out this video to understand these terms in detail! #Education #Science #Kids Looking for more educational content? Check out our corresponding light quiz: http://www.turtlediary.com/quiz/light.html
Views: 312504 Turtlediary
Light Speed : 299,792,458 M/S 300,000 KM/S 1,079,252,848 KM/H 670,616,629 MP/H RED SIDE SHOP STORE https://goo.gl/hVMWE9 MUSIC (3 Background Music Mixed By Me) 1-Give us Time - Dark Ambient Music (CO.AG Music) 2-Im walking through the dust - Dark Ambient Background Music(CO.AG Music) 3-Kevin MacLeod ~ The House of Leaves (EricArchive) WIKIPEDIA: The speed of light in vacuum, commonly denoted c, is a universal physical constant important in many areas of physics. Its exact value is 299,792,458 metres per second (approximately 300,000 km/s (186,000 mi/s). It is exact because by international agreement a metre is defined to be the length of the path travelled by light in vacuum during a time interval of 1/299792458 second. According to special relativity, c is the maximum speed at which all conventional matter and hence all known forms of information in the universe can travel. Though this speed is most commonly associated with light, it is in fact the speed at which all massless particles and changes of the associated fields travel in vacuum (including electromagnetic radiation and gravitational waves). Such particles and waves travel at c regardless of the motion of the source or the inertial reference frame of the observer. In the special and general theories of relativity, c interrelates space and time, and also appears in the famous equation of mass–energy equivalence E = mc2. The speed at which light propagates through transparent materials, such as glass or air, is less than c; similarly, the speed of electromagnetic waves in wire cables is slower than c. The ratio between c and the speed v at which light travels in a material is called the refractive index n of the material (n = c / v). For example, for visible light the refractive index of glass is typically around 1.5, meaning that light in glass travels at c / 1.5 ≈ 200,000 km/s (124,000 mi/s); the refractive index of air for visible light is about 1.0003, so the speed of light in air is about 299,700 km/s (186,220 mi/s), which is about 90 km/s (56 mi/s) slower than c. For many practical purposes, light and other electromagnetic waves will appear to propagate instantaneously, but for long distances and very sensitive measurements, their finite speed has noticeable effects. In communicating with distant space probes, it can take minutes to hours for a message to get from Earth to the spacecraft, or vice versa. The light seen from stars left them many years ago, allowing the study of the history of the universe by looking at distant objects. The finite speed of light also limits the theoretical maximum speed of computers, since information must be sent within the computer from chip to chip. The speed of light can be used with time of flight measurements to measure large distances to high precision. Ole Rømer first demonstrated in 1676 that light travels at a finite speed (as opposed to instantaneously) by studying the apparent motion of Jupiter's moon Io. In 1865, James Clerk Maxwell proposed that light was an electromagnetic wave, and therefore travelled at the speed c appearing in his theory of electromagnetism. In 1905, Albert Einstein postulated that the speed of light c with respect to any inertial frame is a constant and is independent of the motion of the light source. He explored the consequences of that postulate by deriving the theory of relativity and in doing so showed that the parameter c had relevance outside of the context of light and electromagnetism. After centuries of increasingly precise measurements, in 1975 the speed of light was known to be 299792458 m/s (983571056 ft/s; 186282.397 mi/s) with a measurement uncertainty of 4 parts per billion. In 1983, the metre was redefined in the International System of Units (SI) as the distance travelled by light in vacuum in 1/299792458 of a second. Follow! FB : https://www.facebook.com/redsidefanpage Insta: https://www.instagram.com/redside_channel/
Views: 24076 RED SIDE
Light goes so fast that it broke our classical understanding of how speed works. We can fix our understanding with a little relativity and a space-time diagram, but you have to let go of any preconceived notions you might have about motion. ________________________________ VIDEO ANNOTATIONS/CARDS Complete Twins Paradox: https://youtu.be/UInlBJ4UnoQ Ultimate Guide to Relativity: https://youtu.be/FdWMM6aXpYE What Are Gravitational Waves? https://youtu.be/HmiPDvz0WVU What the HECK is a Photon?! https://youtu.be/73XdlgzSKws ________________________________ RELATED YOUTUBE VIDEOS PBS Space Time on Galaxy Collision: https://youtu.be/_P1xKh_kZFU ________________________________ HUGE THANK YOU TO THESE PATRONS ** Daniel Bahr, Ilya Yashin, Drake Dragon (TMDrake), Morgan Williams, Rick Finn, Kevin MacLean, David Bronakowski, Robert J Zapolis, Nicholas Ursa, Evgeny Ivanov ** ________________________________ SUPPORT THE SCIENCE ASYLUM Patreon: http://www.patreon.com/ScienceAsylum Advanced Theoretical Physics (eBook): https://gumroad.com/l/ubSc Merchandise: http://shop.spreadshirt.com/scienceasylum/ ________________________________ OTHER SOURCES https://www.jpl.nasa.gov/infographics/infographic.view.php?id=11489 https://home.cern/about/updates/2015/04/first-successful-beam-record-energy-65-tev https://physics.stackexchange.com/questions/43404/minkowski-diagram-hyperbola-and-invariant-quantity-of-relativity ________________________________ LINKS TO COMMENTS MusicalRaichu - Featured Comment: https://www.youtube.com/watch?v=UInlBJ4UnoQ&lc=UgyxXoFooiHYw1ghzIZ4AaABAg IoDavide1 - Featured Comment: https://www.youtube.com/watch?v=UInlBJ4UnoQ&lc=UgzyhI0A2-hn9BTq1YJ4AaABAg ________________________________ IMAGE CREDITS Juno Space Probe: https://commons.wikimedia.org/wiki/File:Juno_space_probe.jpg US Flag: https://commons.wikimedia.org/wiki/File:Flag_of_the_United_States.svg
Views: 69200 The Science Asylum
"Nothing can travel faster than the speed of light." "Light always travels at the same speed." Have you heard these statements before? They are often quoted as results of Einstein's theory of relativity. Unfortunately, these statements are somewhat misleading. Let's add a few words to them to clarify. "Nothing can travel faster than the speed of light in a vacuum." "Light in a vacuum always travels at the same speed." Those additional three words in a vacuum are very important. A vacuum is a region with no matter in it. So a vacuum would not contain any dust particles (unlike a vacuum cleaner, which is generally full of dust particles). Light traveling through anything other than a perfect vacuum will scatter off off whatever particles exist, as illustrated below. In vacuum the speed of light is c = 2.99792458 x 108 m/s This vacuum speed of light, c, is what the statements from relativity describe. Whenever light is in a vacuum, its speed has that exact value, no matter who measures it. Even if the vacuum is inside a box in a rocket traveling away from earth, both an astronaut in the rocket and a hypothetical observer on earth will measure the speed of light moving through that box to be exactly c. No one will measure a faster speed. Indeed, c is the ultimate speed limit of the universe. That's not to say that nothing ever travels faster than light. As light travels through different materials, it scatters off of the molecules in the material and is slowed down. For some materials such as water, light will slow down more than electrons will. Thus an electron in water can travel faster than light in water. But nothing ever travels faster than c. The amount by which light slows in a given material is described by the index of refraction, n. The index of refraction of a material is defined by the speed of light in vacuum c divided by the speed of light through the material v: n = c/v The index of refraction of some common materials are given below. material n material n Vacuum 1 Crown Glass 1.52 Air 1.0003 Salt 1.54 Water 1.33 Asphalt 1.635 Ethyl Alcohol 1.36 Heavy Flint Glass 1.65 Fused Quartz 1.4585 Diamond 2.42 Whale Oil 1.460 Lead 2.6 Values of n come from the CRC Handbook of Chemistry and Physics The values of n depend somewhat on wavelength, but the dependence is not significant for most applications you will encounter in this course. Unless you are told otherwise, assume the index of refraction given you is appropriate for the wavelength of light you are considering. Those materials with large indices of refraction are called optically dense media. (A medium is just a fancy word for a type of material.) Materials with indices of refraction closer to one are called optically rare media. Being naturally lazy creatures, we generally drop the word "optical'' and talk about dense and rare materials. Just be careful not to confuse dense and rare in the optical context with mass density! Notice that the index of refraction of air differs from the index of refraction of vacuum by a very small amount. For applications with less than 5 digits of accuracy, the index of refraction of air is the same as that of vacuum, n= 1.000. You will probably not encounter a situation in which the differenc between air and vacuum matters, unless you plan a future in precise optics experimentation. Even though light slows down in matter, it still travels at an amazing speed, even through a dense material such as lead still travels at an amazing speed. (Although light does not travel far through lead before being absorbed, high-energy gamma rays can travel a centimeter or so through lead at the speed calculated here.) Using the definition of n, we can find the speed of light through lead: vlead = c/nlead= (2.99792458 x 108 m/s) /(2.6) = 1.2 x 108 m/s = 2.6 x 108miles per hour Even slowed by lead, light travels at a speed of 260 million miles per hour! That's more than 10,000 times the speed of the orbiting space shuttle. (According to a NASA site, the space shuttle travels 17,322 miles per hour when in orbit.)
Views: 9774 Hey! Its Proved!
The speed of light and black holes. What happens when at the speed of light? What about a black hole? This video explains how time dilations works with very fast relativistic speeds. The equation and the intuition behind the logic. We cover some of Albert Einstein relativistic physics theory. - - - - - - Patreon: http://bit.ly/HiggsinoPatreon One time donation: http://bit.ly/HiggsinoDonate Newsletter email: http://bit.ly/HiggsinoMail Subscribe: http://bit.ly/HiggsinoSubscribe #Physics #Relativity #Light Time dilation graph Source: http://www.daviddarling.info/encyclopedia/T/timedilation.html Relativistic energy graph. Source: http://www.wikiwand.com/en/Tests_of_relativistic_energy_and_momentum Music by Ross Bugden - Music: https://www.youtube.com/channel/UCQKGLOK2FqmVgVwYferltKQ
Views: 431338 Higgsino physics
You may have heard quite frequently that ‘light is the fastest entity in the entire universe’. That statement is accurate, light is indeed the fastest of all, but not in all mediums. Yes, there are certain particles which can go faster than light in a given medium. So, what actually happens when a puny particle dares to go faster than the speed of light? References: http://large.stanford.edu/courses/2014/ph241/alaeian2/ http://www.radioactivity.eu.com/site/pages/Cherenkov_Effect.htm http://abyss.uoregon.edu/~js/glossary/cerenkov_radiation.html https://micro.magnet.fsu.edu/primer/java/speedoflight/index.html
Views: 12997 Science ABC
One of the most counterintuitive facts of our universe is that you can’t go faster than the speed of light. From this single observation arise all of the mind-bending behaviors of special relativity. But why is this so? In this in-depth video, Fermilab’s Dr. Don Lincoln explains the real reason that you can’t go faster than the speed of light. It will blow your mind.
Views: 2274944 Fermilab
Interstellar Travel Interstellar travel is the term used for hypothetical crewed or uncrewed travel between stars or planetary systems. Interstellar travel will be much more difficult than interplanetary spaceflight; the distances between the planets in the Solar System are less than 30 astronomical units (AU)—whereas the distances between stars are typically hundreds of thousands of AU, and usually expressed in light-years. Because of the vastness of those distances, interstellar travel would require a high percentage of the speed of light; huge travel time, lasting from decades to millennia or longer; or a combination of both. The speeds required for interstellar travel in a human lifetime far exceed what current methods of spacecraft propulsion can provide. Even with a hypothetically perfectly efficient propulsion system, the kinetic energy corresponding to those speeds is enormous by today's standards of energy production. Moreover, collisions by the spacecraft with cosmic dust and gas can produce very dangerous effects both to passengers and the spacecraft itself. A number of strategies have been proposed to deal with these problems, ranging from giant arks that would carry entire societies and ecosystems, to microscopic space probes. Many different spacecraft propulsion systems have been proposed to give spacecraft the required speeds, including nuclear propulsion, beam-powered propulsion, and methods based on speculative physics.
Views: 539005 ADVEXON TV
What would happen if we travel faster than the speed of light . Hope you will like the video thanks for watching and don't forget to subscribe and let me know any other video you want me to make in the comments. Subscribe to our channel : https://goo.gl/qCiemj Join us on Facebook : https://www.facebook.com/Informii-786719934773878/ Follow us on Instagram : https://www.instagram.com/informii/ Follow us on twitter : https://twitter.com/informiii
Views: 3567 informii
This is the distance between Earth, the Moon and Mars with the correct distances but with Earth, Moon and Mars 20 times bigger (so you can see them!). The real-time speed of light is shown. *Animation by Dr. James O'Donoghue using NASA imagery. *Share/use as you wish, credit is appreciated.
Views: 821017 Dr James O'Donoghue
Hello and welcome to What Da Math! In this video, we will talk about the speed of light. Patreon page: https://www.patreon.com/user?u=2318196&ty=h Enjoy and please subscribe. Other videos here: https://www.youtube.com/playlist?list=PL9hNFus3sjE7jgrGJYkZeTpR7lnyVAk-x Twitter: https://twitter.com/WhatDaMath Facebook: https://www.facebook.com/whatdamath Twitch: http://www.twitch.tv/whatdamath The video introduction made by Daniel Bates His YouTube channel with more of his work is here: https://www.youtube.com/mroutrochannel The new music theme made by Bogdan Bratis Check out his work here: http://www.bratis.uk/
Views: 190019 Anton Petrov
You may be familiar with the speed of light, but the reason it exists and how we discovered it is pretty fascinating. Support me on Patreon! http://www.patreon.com/answerswithjoe Follow me at all my places! Instagram: https://instagram.com/answerswithjoe Snapchat: https://www.snapchat.com/add/answerswithjoe Facebook: http://www.facebook.com/answerswithjoe Twitter: https://www.twitter.com/answerswithjoe ============= LINKS LINKS LINKS: PBS Space Time videos: The Speed of Light is NOT About Light https://www.youtube.com/watch?v=msVuCEs8Ydo The Geometry of Causality https://youtu.be/1YFrISfN7jo http://www.iflscience.com/space/solar-system-speed-light/ https://en.wikipedia.org/wiki/Speed_of_light https://en.wikipedia.org/wiki/Lene_Hau https://aeon.co/essays/why-is-the-speed-of-light-the-speed-of-light https://www.sciencenews.org/article/speed-light-not-so-constant-after-all ============ Transcript: So when we talk about the speed of light, the first thing to remember is that light is just a sliver of the entire electromagnetic spectrum, ranging from gamma rays to radio waves. So we’re really talking about the speed of electromagnetism. James Clerk Maxwell was the genius who first described the properties of electromagnetism into physics equations. From these equations, we can calculate the speed of light. 299,792 kilometers per second. Einstein was able to prove through his theory of special relativity that the closer you get to the speed of light, the more time slows down for a person in that relative frame. And if you were to go the speed of light, time would stop altogether. So if you were able to travel faster than light through spacetime, time itself would actually flip. Time would go backwards. And that would break causality. Effect would precede cause, which is impossible. The speed of light is the speed of causality. The other prediction that supports a speed limit is the idea that inertia increases as velocity approaches the speed of light. That means mass increases. So mass is a speed impediment. Nothing that has mass can go the speed of light. But if you are massless, you can only go the speed of light, because you have no speed impediments. And photons are massless particles. Particles that must travel at the speed of light and because they are traveling at the speed of light, time stands still from its point of view. So really, that video I talked about earlier is all wrong, from the perspective of the photon, that journey would have occurred instantly. So when you look at a star at night, that massless photon might have traveled a million light-years to reach you, but its experience was instantaneous. Now there is another theory that’s a little controversial but starting to gain some ground. It says that the speed of light is actually caused by quantum vacuum fluctuations. See, quantum field theory claims that empty space is actually not empty at all but filled with quantum fluctuations and virtual particles popping in and out of existence. And two different teams of researchers have calculated c using electromagnetic properties of the quantum vacuum, so it could be that the quantum foam of virtual particles and fluctuations may be slowing the speed of light. But what if the speed of light wasn’t the speed of light? What if Galileo was right and the speed is infinite? Then nothing would exist. Because matter is made of energy, it would take infinite energy to create any mass. Time and space wouldn’t exist because all things communicate with each other instantaneously. Cause and effect wouldn’t exist. But if the speed of light were slower, that might be even cooler. Because then we could see all the way back to the big bang. The speed of light, of course, is just one of many constants in the universe, like gravity, the specific charges and masses of the fundamental particles, quantum effects, and the list goes on. A whole handful of very specific constants that if they were just a little bit different, we would never exist.
Views: 324369 Joe Scott
Watch this video to learn more about the Speed of Light. See this and over 140+ engineering technology simulation videos at http://www.engineertech.org. Simulations provided free under a Department of Labor grant awarded Eastern Iowa Community Colleges. To learn more visit http://www.eicc.edu.
Views: 13207 Engineering Technology Simulation Learning Videos
Excellent documentary, mind blowing and superbly narrated. Enjoy Narrated by Alec Baldwin.
Views: 5054367 LordDanofLondon
Can we travel at light speed? We teamed up with Popular Science to find out! Like this video? Tweet us!: http://twitter.com/thoughtcafe Welcome to Thought Café +, an collaborative animated series with people and organizations we love. Subscribe so you never miss a video! Take a 360° tour of our solar system: https://youtu.be/ZnOTprOTHc8 Our video on pubic hair with AsapScience: https://youtu.be/46LU6AxB1go More Thought Café + videos: http://bit.ly/1KpGB0s Sound Design by Allan Levy Follow us! https://thoughtcafe.ca http://twitter.com/thoughtcafe http://thought-cafe.tumblr.com http://facebook.com/thoughtbubbler http://instagram.com/thoughtcafe @thoughtcafe on Snapchat & Periscope
Views: 179707 Thought Café
There are many mysteries of physics for which you can find explanations online and some of those explanations are wrong. In this video, Fermilab’s Dr. Don Lincoln takes on the mystery of why light travels slower in water and glass. He lists a few wrong explanations and then shows you the real reason this happens.
Views: 249091 Fermilab
Space Secrets of New 2017 HD. Nebula in space Secrets of the Universe 2017 HD. Secrets of space Speed of light National Geographic 2017 HD. Space . Secrets of space Speed of light National Geographic 2017 HD. Space Secrets of New 2017 HD. Secrets of space Speed of light National Geographic 2017 HD. Are We Alone In The Universe? Is Earth the only planet supporting life? Where are the aliens hiding? In just over two decades, humanity has gone from . On our channel a lot of interesting documentaries on such themes: to destroy the Land, kill the Earth, end of Earth, the death Land, death Land, doomsday, .
Views: 22599 Peter Smith
This video is an entry for the Breakthrough Junior Challenge 2015 which gives a unique visualization of Special Relativity using hyperbolic geometry. This idea was inspired by the famous woodcut by M.C. Escher Circle Limit III. http://www.mcescher.com/gallery/recognition-success/circle-limit-iii/ I liked the idea of making a video on Special Relativity because I had already explored the use of M.C. Escher’s woodcut Circle Limit III as a teaching tool for explaining the hyperbolic geometry of Minkowski spacetime. The main intuition is that the principle of Relativity asserts that the manifold of frames of reference is homogeneous and isotropic, and there are exactly three geometries associated with this: Sphere (which exists as rotations through space), Plane (which represents Galilean Relativity) and the Hyperbolic Plane (which exists as rotations through spacetime). I wanted to find a way to use this intuition without overwhelming the audience with technical terms. When the timelike unit vectors in 2+1 spacetime (which correspond to velocity four-vectors) are projected onto a disk (see Wikipedia: “Hyperboloid model”), the result is the Poincare Disk Model, which is (almost) the geometry portrayed in Circle Limit III. I had never seen anyone to use this as a visualization of Special Relativity, and so I decided to make the video. Public Domain Image Sources (in order of appearance): Einstein: https://commons.wikimedia.org/wiki/Category:Albert_Einstein#/media/File:Albert_Einstein_1921_by_F_Schmutzer.jpg pulse of light: https://pixabay.com/en/light-bokeh-yellow-red-frequency-681186/ stopwatches: https://pixabay.com/en/stopwatch-clock-many-time-hours-911767/ crowd: https://pixabay.com/en/men-personal-many-human-silhouette-695653/ beakers: https://pixabay.com/en/beakers-experiment-flasks-research-309864/ map: https://pixabay.com/en/world-map-earth-global-continents-146505/ wall clock: https://pixabay.com/en/clock-analog-time-watch-147257/ starburst: http://www.cliparthut.com/starburst-clip-art-clipart-ntmLZk.html Electric Current: https://pixabay.com/en/current-electric-charge-electricity-738818/ mouth: https://pixabay.com/en/lips-sexy-mouth-kiss-passion-150003/ water waves: https://pixabay.com/en/banner-header-wave-wavy-background-904889/ cosmic lake: https://pixabay.com/en/graphics-virtuoso-technique-and-great-954343/ Galileo: http://fineartamerica.com/featured/1-galileo-galilei-oprea-nicolae.html flashlight: https://pixabay.com/en/light-torch-lamp-electric-159858/ Poincare: https://commons.wikimedia.org/wiki/File:Henri_Poincaré-2.jpg Einstein: https://commons.wikimedia.org/wiki/Category:Portraits_of_Albert_Einstein#/media/File:Einstein-formal_portrait-35.jpg Lorentz: :https://en.wikipedia.org/wiki/Hendrik_Lorentz#/media/File:Hendrik_Antoon_Lorentz.jpg Minkowski: :https://en.wikipedia.org/wiki/Oskar_Minkowski#/media/File:Minkowski.JPG star cluster:https://pixabay.com/en/star-clusters-galaxy-star-ngc-602-74052/ trash can: https://pixabay.com/en/trash-can-garbage-can-waste-basket-23653/ Einstein and Lorentz: https://en.wikipedia.org/wiki/Hendrik_Lorentz#/media/File:Einstein_en_Lorentz.jpg car: https://pixabay.com/en/car-red-vehicle-automobile-classic-160337/ bicycle: https://pixabay.com/en/vintage-bicycle-old-pretty-937960/ jet: https://pixabay.com/en/jet-airplane-plane-military-158846/ spacetime: https://en.wikipedia.org/wiki/Minkowski_space#/media/File:World_line.svg atomic cloud: https://pixabay.com/en/explosion-nuclear-blast-cloud-308363/ stopwatch: https://pixabay.com/en/stopwatch-racing-timer-timing-153398/ Software used to create this video includes iMovie, Keynote, Pixelmator, MathType, and Quicktime Player.
Views: 2483576 Kadi Runnels
SUBSCRIBE for more videos like this ! Made by Alphonse Swinehart https://vimeo.com/aswinehart Latest video: https://youtu.be/Z8_Aqe1KPQY 3:12 mercury 6:00 venus 8:18 earth 12:39 mars 19:40 vesta 22:58 ceres , pallas 26:08 hygea 43:16 jupiter Fluidscape by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100393 Artist: http://incompetech.com/
Views: 169522 razvan524
Hi Everyone, today we’re exploring one of the fundamental characteristics of our Universe - that no particle can be made to travel faster than the speed of light in space. Why is that? TOPICS COVERED IN THIS VIDEO: Why light travels at light speed? - 0:13 What happens when we try to accelerate a particle to the speed of light? - 0:35 What is time dilation? - 0:57 What are Tachyons? - 2:37 What is the causality principle? - 3:16 What are wormholes? - 3:34 How fast does space expand? - 3:56 Quantum entanglement explained | Spooky action at a distance defined - 4:14 --------------------------------------------------------------------------------- BUY MY EDUCATIONAL EBOOKS - https://amzn.to/2T0Zb9W TITLES AVAILABLE String theory made simple Theory of relativity made simple Quantum Mechanics made simple The Fermi paradox --------------------------------------------------------------------------------- CONNECT WITH ME Instagram (see the girl behind the videos) - https://www.instagram.com/londoncitystyle/ --------------------------------------------------------------------------------- SUPPORT ME ON PATREON - https://www.patreon.com/londoncitygirl Even the smallest of amounts will help me create more and more content for YouTube and I’ll be forever grateful! :D --------------------------------------------------------------------------------- SUBSCRIBE TO MY VLOG CHANNEL https://www.youtube.com/channel/UC9FKi7qNrRXP8wbknC6c0BA?sub_confirmation=1 #Physics #TimeDilation #SpeedOfLight
Views: 2093 LondonCityGirl – Knowledge
If you could make light bend around Earth, it would orbit 7.5 times per second (near the surface). That's 0.13 seconds per orbit! Play around with the SPEED in settings, as I uploaded this at 60 frames per second. *Animation by Dr. James O'Donoghue using NASA imagery. *Share/use as you wish, credit is appreciated.
Views: 718489 Dr James O'Donoghue
If you were driving at the speed of light and turned on your headlights, what would happen? Twitter: http://www.twitter.com/tweetsauce Instagram: http://www.instagram.com/electricpants Sources and extras below!! Thanks to Jude for asking me this question on twitter! https://twitter.com/stefanikj5/status/550865272895447041 “The Life of the Cosmos” by Lee Smolin: http://www.amazon.co.uk/The-Life-Cosmos-Lee-Smolin/dp/0195126645 “In Search of the Multiverse” by John Gribbin: http://www.amazon.co.uk/In-Search-Multiverse-John-Gribbin/dp/0141036117 “The Pig That Wants to be Eaten: by Julian Baggini: http://www.amazon.co.uk/The-Pig-That-Wants-Eaten/dp/1847081282 Relevant MinutePhysics videos: https://www.youtube.com/watch?v=IM630Z8lho8 https://www.youtube.com/watch?v=NnMIhxWRGNw light slowing down in glass: https://www.youtube.com/watch?v=FAivtXJOsiI a different perspective from Sixty Symbols about light slowing down: https://www.youtube.com/watch?v=CiHN0ZWE5bk Why is “c” the speed of light? http://math.ucr.edu/home/baez/physics/Relativity/SpeedOfLight/c.html Car at light speed: http://www.sydneyobservatory.com.au/2010/what-happens-when-a-car-travelling-near-the-speed-of-light-turns-on-its-headlights/ https://van.physics.illinois.edu/qa/listing.php?id=1355 http://www.scienceforums.net/topic/82191-i-am-driving-my-car-at-the-speed-of-light-and-i-turn-on-my-headlights-what-do-i-see/ http://www.desy.de/user/projects/Physics/Relativity/SpeedOfLight/headlights.html Light speed is the same in all inertial frames of reference: http://www.physlink.com/Education/AskExperts/ae558.cfm https://van.physics.illinois.edu/qa/listing.php?id=2605 http://hyperphysics.phy-astr.gsu.edu/hbase/relativ/mmhist.html#c1 Relativistic addition of velocities: http://demonstrations.wolfram.com/EinsteinsFormulaForAddingVelocities/ http://cnx.org/contents/[email protected]/Relativistic_Addition_of_Veloc doppler shift: http://commons.wikimedia.org/wiki/File:XYCoordinates.gif#mediaviewer/File:Doppler-velocity89.jpg Relativity: http://www.refsmmat.com/jsphys/relativity/relativity.html http://www.astro.virginia.edu/~jh8h/Foundations/quest7.html Light speed and catching-up to light. http://www.pitt.edu/~jdnorton/Goodies/Chasing_the_light/ http://math.ucr.edu/home/baez/physics/Relativity/SpeedOfLight/speed_of_light.html http://www.askamathematician.com/2010/11/q-what-would-you-experience-if-you-were-going-the-speed-of-light/ http://scienceline.ucsb.edu/getkey.php?key=1571 https://van.physics.illinois.edu/qa/listing.php?id=1354 Other good relativity resources: http://newt.phys.unsw.edu.au/einsteinlight/ Light echo footage: http://www.spacetelescope.org/videos/heic0617a/ “fine-tuned” universe: http://io9.com/5989467/how-does-the-anthropic-principle-change-the-meaning-of-the-universe http://en.wikipedia.org/wiki/Fine-tuned_Universe http://rationalwiki.org/wiki/Anthropic_principle Irrational numbers: http://mathworld.wolfram.com/IrrationalNumber.html a million digits of pi: http://www.piday.org/million/ THERE'S MORE VSAUCE!! Vsauce2: http://www.youtube.com/Vsauce2 Vsauce3: http://www.youtube.com/Vsauce3 animated drawings by Guy Larsen https://twitter.com/guylar rocketship animation by Eric Langay https://twitter.com/ericlanglay
Views: 6091927 Vsauce
Nasa may have successfully tested a form of space flight that could carry people to the moon in a few short hours — and eventually let us fly at speeds approaching that of light. Mike's food channel: https://www.youtube.com/user/strictlydumpling Instagram: @mikexingchen Twitter: @mikexingchen Snapchat: @mikeychenx Facebook: https://www.facebook.com/beyondsciencetv?_rdr
Views: 1041603 Beyond Science
twitter: http://www.twitter.com/tweetsauce instagram: http://www.instagram.com/electricpants facebook: http://www.facebook.com/VsauceGaming SOURCES BELOW: this is the video where I talk about THE SPEED OF PUSH: https://www.youtube.com/watch?v=Do1lm9IevYE Big thanks to Martin Archer for help with this episode: http://www.martinarcher.co.uk/ And thanks to Guy Larsen for his shadow magic: https://twitter.com/guylar music by http://www.YouTube.com/JakeChudnow and http://www.audionetwork.com shadows faster than light: http://math.ucr.edu/home/baez/physics/Relativity/SpeedOfLight/FTL.html#3 http://physics.stackexchange.com/questions/63434/could-the-shadow-move-with-faster-than-light-speed http://www.madsci.org/posts/archives/2000-02/950834634.Ph.q.html making the moon brighter: http://what-if.xkcd.com/13/ sunset and earth’s shadow and belt of venus in single pics: http://apod.nasa.gov/apod/ap131024.html http://apod.nasa.gov/apod/ap100729.html amounts of evening-types in a city: http://weatherspark.com/averages/33125/Honolulu-Hawaii-United-States superluminal scissors: http://math.ucr.edu/home/baez/physics/Relativity/SR/scissors.html http://boards.straightdope.com/sdmb/archive/index.php/t-69757.html wave animations: http://www.ablongman.com/mullin/AnimationPages/FigsI-19&20.html http://www.acs.psu.edu/drussell/Demos/SWR/SWR.html http://resource.isvr.soton.ac.uk/spcg/tutorial/tutorial/Tutorial_files/Web-inter-superp.htm phase velocity vs. group velocity: http://resource.isvr.soton.ac.uk/spcg/tutorial/tutorial/Tutorial_files/Web-further-dispersive.htm faster than light dark patches: http://www.askamathematician.com/2013/02/q-is-darkness-a-wave-the-way-light-is-a-wave-what-is-the-speed-of-dark/ http://www.physicsclassroom.com/class/light/Lesson-3/The-Path-Difference make a light interference pattern at home: http://www.exploratorium.edu/snacks/diffraction/ http://www.instructables.com/id/How-to-perform-Interference-and-Diffranction-at-Ho/ the speed of ignorance: http://www.brainpickings.org/index.php/2012/04/02/stuart-firestein-ignorance-science/ http://philosophicalfallibilism.blogspot.com/2009_03_20_archive.html http://kk.org/thetechnium/2008/10/the-expansion-o/ http://louisecharente.wordpress.com/2013/10/24/the-discovery-of-ignorance/ Dunning-Kruger: http://www.huffingtonpost.com/david-macaray/the-dunningkruger-effect_b_4476166.html http://en.wikipedia.org/wiki/McArthur_Wheeler “animalcules”: http://www.leben.us/index.php/component/content/article/59-volume-3-issue-4/236-antoni-van-leeuwenhoeks-amazing-little-animalcules
Views: 13813253 Vsauce
Bonus Videos, "The Nature of Itself," & "Chemicals of Reality," Premium Videos Available @ http://www.patreon.com/strangemysteries Narrated by Jack Daniel www.jackdanielvo.com It is often said that nothing can travel faster than the speed of light. The universal speed limit is 299,792,458 metres or 300,000 kilometres per second, and due to the rules the flying spaghetti monster imposed upon the universe during its creation, this limit cannot be broken. Or can it? Theoretical physics describes a type of particle which may be able to break the light barrier. It can also reportedly travel through time, it gets faster as it loses energy and it possesses has negative mass. So does this mysterious particle really exist? The "Nature of Itself Trailer" Background Music: Seven Lions, Tritonal, Kill the Noise - Horizon (feat. HALIENE) Released by Enhanced http://enhancedmusic.com/home/ https://soundcloud.com/enhanced https://www.facebook.com/EnhancedMusic Get Horizon Now: https://enhanced.lnk.to/Enhanced349Yo REFERENCES: Ehrlich, Robert. 2015. “Six Observations Consistent with the Electron Neutrino Being a m2=-0.11±0.02eV2 Tachyon.” Astroparticle Physics 66 (June): 11–17. https://doi.org/10.1016/j.astropartphys.2014.12.011. Fried, H. M., and Y. Gabellini. 2016. “The Birth and Death of a Universe.” The European Physical Journal C 76 (12): 709. https://doi.org/10.1140/epjc/s10052-016-4577-8. Grøn, Øyvind, and Sigbjorn Hervik. 2007. Einstein’s General Theory of Relativity: With Modern Applications in Cosmology. Springer Science & Business Media. https://market.android.com/details?id=book-IyJhCHAryuUC. Makukov, Maxim A., Eduard G. Mychelkin, and Vladimir L. Saveliev. 2016. “On Possible Tachyonic State of Neutrino Dark Matter.” International Journal of Modern Physics: Conference Series 41 (January): 1660133. https://doi.org/10.1142/S2010194516601332. Mychelkin, Eduard G., and Maxim A. Makukov. 2017. “Tachyonic Approach to Neutrino Dark Matter.” In The Fourteenth Marcel Grossmann Meeting, 2591–96. WORLD SCIENTIFIC. https://doi.org/10.1142/9789813226609_0311. Recami, E. 2009. “The Tolman-Regge Antitelephone Paradox: Its Solution by Tachyon Mechanics.” Electronic Journal of Theoretical Physics. https://www.researchgate.net/profile/Erasmo_Recami/publication/2077024_The_Tolman-Regge_Antitelephone_Paradox_Its_Solution_by_Tachyon_Mechanics/links/0c1c93028f041d2ec2e910d8/The-Tolman-Regge-Antitelephone-Paradox-Its-Solution-by-Tachyon-Mechanics.pdf. Spencer, Joseph Andrew, and James T. Wheeler. 2008. “The Existence of Time.” arXiv [gr-Qc]. arXiv. http://arxiv.org/abs/0811.0112. Hello Sprint Executives, thanks for reading this.
Views: 770390 Strange Mysteries
Traveling faster than light is one of humanity’s dreams. Sadly, modern physics doesn’t cooperate. However there are examples where it really is possible to travel faster than light. In this video, Fermilab’s Dr. Don Lincoln tells us of these ways in which the universe breaks the ultimate speed limit.
Views: 365686 Fermilab
Light is the only thing we've observed to travel at the speed of light, though there are some theoretical particles that do the same... But why does it go so fast? and why can't everything go that fast? Watch to find out. ________________________________ VIDEO ANNOTATIONS E=mc^2 video: http://youtu.be/2jKHM92wbl4 Uncertainty Priciple: http://youtu.be/lsfeh2I0nis Why is Lightning a Thing? http://youtu.be/qNuRuWkELzc ________________________________ COOL LINKS & SOURCES Hyperphysics: http://hyperphysics.phy-astr.gsu.edu/hbase/relativ/releng.html Wikipedia: http://en.wikipedia.org/wiki/Speed_of_light http://en.wikipedia.org/wiki/Kinetic_energy#Relativistic_kinetic_energy_of_rigid_bodies Dramatic Prairie Dog: http://youtu.be/jHjFxJVeCQs ________________________________ SCIENCE ASYLUM STUFF More videos at: http://www.youtube.com/TheScienceAsylum Vlog: http://www.youtube.com/TheNickLucid Facebook: http://www.facebook.com/ScienceAsylum Twitter: @nicklucid http://twitter.com/nicklucid Tumblr: http://nicklucid.tumblr.com/ Google+: http://www.google.com/+Scienceasylum Main Site: http://www.scienceasylum.com/ T-Shirts: http://scienceasylum.spreadshirt.com/ ________________________________ IMAGE CREDITS Logo designed by: Ben Sharef Stock Photos and Clipart - Wikimedia Commons http://commons.wikimedia.org/wiki/Main_Page - Openclipart http://openclipart.org/ - or I made them myself...
Views: 115102 The Science Asylum
This is just a demo video, for more videos and full syllabus please contact us on 8287971571 or 0261-4890014. Speed of Light faster than sound - Sound (Chapter 12): CBSE Class 9 Science This Video is about the speed of sound and light which is covered in CBSE Class 9 Science. Here we describe the topic as light travels faster than sound from chapter sound. Introduction - Sound A sound is a form of energy like heat energy, light energy, potential energy, and kinetic energy. It causes a sensation of hearing in our ears. Sound cannot be created nor destroyed but can be changed from one form to another. E.g., when we clap, a sound is produced. Here, muscular energy is converted into sound energy. This is in accordance with the law of conservation of energy. Similarly in an electric bell, when connected to electricity starts producing sound. Here, again electrical energy is converted into sound energy. Production of Sound The sound is produced due to the vibration of objects. The motion of materials or objects causes vibration. Vibration is a kind of rapid to and fro motion of an object about a central position. It is also referred to as oscillation. For example, a stretched rubber band when plucked vibrates and produces sound. Propagation of Sound The traveling of sound is called propagation of sound waves. The matter or substance through which sound is transmitted is called a medium. The medium can be solid, liquid or gas. Sound cannot travel in a vacuum. A true vacuum refers to the complete absence of matter. Sound waves can travel only through matter. So, sound needs a physical medium in order to travel anywhere. Wave that requires medium to propagate is called Mechanical Wave. For example - a sound wave. Sound cannot travel in the absence of a medium. The speed of sound is slower than the speed of light, one of the main reason behind this is sound requires medium to travel whereas light can travel in vacuum also. When a thunderstorm is seen in the sky during the rainy season it is observed that light is seen first after that striking sound comes, this is because sound travels slower than light. All the above-mentioned topics are described in an interactive and efficient manner so that the students could easily understand them. For more information please visit - https://www.dronstudy.com/shop/popular/class-ix-chem/ Call us at - 8287971571 or 0261-4890016 Email: [email protected] For more information please refer to below-mentioned links: DronStudy official website: https://www.dronstudy.com Facebook Page: https://www.facebook.com/dronstudy/ Class 9 Science Video Lectures: https://www.youtube.com/playlist?list=PLKb9HOyS0VGSExczP9ZSoQn2ZtHKAf3o0 Class 9 Science Full Course: https://www.dronstudy.com/shop/video-courses/class-9-video-courses/class-ix-science/ DronStudy YouTube Channel: https://www.youtube.com/channel/UCPiuJvuyMVFSwcIdBCTpTyQ #sound #light #class9
Views: 8883 Dronstudy.com
These 3 things go "faster" than the speed of light. How's that even possible? Subscribe: http://www.youtube.com/channel/UCj1gf... ↓Want more info?↓ More about the experiment: Marissa Giustina’s research: http://arxiv.org/abs/1511.03190 Advanced scientific note about Doppler: If there is a light moving away from you at constant velocity in static flat (Minkowski) space-time, no matter how red it is, you will never conclude it is going faster than light. But, here I am discussing the conclusions one might come to if you mistakenly use Doppler in the context of the curved space-time of the universe (where there is expansion). Interpreting the huge redshift as a result of the doppler effect, could make one think that galaxies we see are moving away at speeds approaching light speed. And since what we are actually seeing is light from those galaxies from billions of years ago, and given that the universe is expanding, you might be tempted to say that they have since "accelerated" to faster than the speed of light. You might go further and say that there are more distant galaxies that we can't see which are moving away even faster. So you might conclude there are galaxies moving faster than light in the universe. But the redshift isn't from doppler and this "acceleration" of the expanding universe isn't actually causing a true increase in velocity. Sometimes astronomers do say there is a faster than light "recession speed" by pretending the expansion of the universe is causing distant galaxies to move away from each other at a corresponding velocity, but that's misleading. In general relativity, you can actually have an increase in space between objects without causing a corresponding increase in the relatives velocities of those objects. CREDITS: Host, Writer, Animator, Editor: Greg Kestin From the producers of PBS NOVA © WGBH Educational Foundation Funding provided by FQXi Special thanks: Marissa Giustina Nick Hutzler Julie Elksy Byron Drury Jacob Barandes Tyler Howe Lissy Herman Ari Daniel Lauren Aguirre Kristine Allington Allison Eck Anna Rotschild MEDIA CREDITS: Music provided by APM: Deep_Science_No-perc Mysteries_of_Science_B Dreaming_of_the_Stars_a Curiosity_Kills_the_Cat_2 Conundrum_a Images: Stars - Rene Barrios Earth - Eirika galaxy spiral (by coornio - diviantart) Squirrel with scissors - 60811670 - Dollarphotoclub Equations - 91613623 - Dollarphotoclub Maxresdefault - Sean Stewart Marissa Giustina - Lammerhuber Tangled cat - David Swayze Cat doll - Vicky Somma Stock footage: train-exits-tunnel - Pond5 Bin_pulsar_442 - Courtesy of Nasa Expanding in space (40294) - Courtesy of Nasa WMAP_archive - Courtesy of Nasa
Views: 1863440 What The Physics?!
Wouldn't it be great if we could explore different stars, planets, or even galaxies? However, even the closest stars to Earth are many light years away and would probably take us centuries or millennia to get there with our current technology. Even our fastest spacecraft can barely reach a fraction of the speed of light, so obviously we have a long way to go before we can attempt interstellar travel. But theoretically, is it possible to travel faster than the speed of light? Is light the fastest thing in the Universe? The answer lies in Einstein's Theory of Relativity. ------------------------ ➨Get tickets to the best show on earth!!! http://bit.ly/1FS990h ►Subscribe for more videos! https://bit.ly/2qL2cQ9 ★↓FOLLOW US ON SOCIAL MEDIA!↓★ Facebook Page: https://www.facebook.com/thefriendlybrain/ Instagram: https://www.instagram.com/thefriendlybrain/ ♬ Music: Summer - www.bensound.com
Views: 3430 The Friendly Brain
This video explains Why we can't travel faster than the speed of Light. This video is in Hindi language and covers the concept of Theory of Relativity and Causality principle to explain why Faster than Light Travel is Impossible. हम प्रकाश की गति को पीछे क्यों नहीं छोड़ सकते? ------------------------------------------------------ Credits ----------------------------------------------------- (1)Written and Edited by- Ravi Kumar (2)Narrated by- Samar Singh (3)Background music- Coag Music
Views: 380931 Vigyan Tv India
If you shine a light at a spaceship traveling at half the speed of light, will the way they see the light be different? If you were to travel faster than the speed of light, would you age slower? Full documentary available here: https://www.youtube.com/watch?v=Yc9_ZFxMvMw Subscribe to Spark for more amazing science, tech and engineering videos - https://goo.gl/LIrlur Follow us on Facebook: https://www.facebook.com/SparkDocs/ Follow us on Instagram: https://www.instagram.com/spark_channel/?hl=undefined Content licensed from DRG Distributions to Little Dot Studios. #spark #sparkdocumentary #timetravel #timetraveleinstein #speedoflight #spacetravel #timetraveldocumentary #einsteindocumentary #physics
Views: 2906 Spark
Our universe is very big. It consists of numerous galaxies, stars, planets, etc. However, until now, we are able to examine only a few of them. So, in order to cross vast distances and explore distant places, we need to travel very fast. Now, it is observed that nothing can travel faster than the speed of light, which is about 186,282 miles per second. This means light from earth will take only 1.3 seconds to reach the moon. Let's compare this to the Apollo 11 spacecraft that took 75 hours and 56 minutes to just enter the orbit of the moon. So, imagine if we could travel faster than light, then space travel would be so easy. We could time travel and even see our future. However, traveling faster than light is impossible. Do you know why? According to Einstein's theory of relativity, to move an object, we require energy. Now, to make this moving object move faster or speed up, we require even more energy. So, what do you think? How much energy will be required to make an object move at the speed of light? If we again refer to the Einstein's theory of relativity, we can conclude that it will require an infinite amount of energy to make an object move at the speed of light. But, looking at the current situation, neither do we have the necessary resources, nor do we have the technology to produce an infinite amount of energy. Hence, we cannot travel at the speed of light or faster. Moreover, just like a sonic boom is produced by an object traveling faster than sound, similarly, a huge amount of radiation will be produced by an object traveling faster than light. This radiation can lead to serious consequences. Hence, it is impossible to travel faster than the speed of light. Also, don't forget to subscribe to our YouTube channel.
Views: 308176 It's AumSum Time
Episode 4 of 5 Check us out on iTunes! http://dne.ws/1NixUds Please Subscribe! http://testu.be/1FjtHn5 According to the theory of special relativity, anything that travels over the speed of light would technically travel backwards in time. But is that possible? + + + + + + + + Previous Episode: X-Rays, Gamma Rays And Other Invisible Light Explained: https://youtu.be/kOBwi--PNWs?list=PLwwOk5fvpuuLQQMieZPklOxmX6owFcobz + + + + + + + + Sources: What’s The Fundamental Reason Why The Speed Of Light Cannot Be Broken?: https://www.quora.com/Whats-the-fundamental-reason-why-the-speed-of-light-cannot-be-broken "We hear it all the time when ever time travel is mentioned-- that whenever an object reaches within 99.999999% of the speed of light, the time around that object slows down dramatically." What Happens If You’re Traveling At The Speed Of Light And Turn On Your Headlights?: http://io9.com/5527521/what-happens-if-youre-traveling-at-the-speed-of-light-and-turn-on-your-headlights “One of the most popular questions from our 'ask a physicist' feature was, 'What happens if you're driving at the speed of light and you turn on your headlights?'" Would Time Freeze If You Could Travel At The Speed Of Light?: http://physics.stackexchange.com/questions/29082/would-time-freeze-if-you-could-travel-at-the-speed-of-light “I read with interest about Einstein's Theory of Relativity and his proposition about the speed of light being the universal speed limit." Automatic Telescope Spots Light-Speed Explosions: http://www.space.com/3936-automatic-telescope-spots-light-speed-explosions.html “Some dying stars smolder into darkness while others quickly shed their coat of hot gases. But some go out with a bang, propelling their remains through the cosmos at more than 99.9997 percent of the speed of light--the maximum speed limit in the universe." Can Matter Travel At Light Speed?: http://www.livescience.com/32177-can-matter-travel-at-light-speed.html “Unless the basic principles of the universe discovered by Einstein are proven wrong, which hardly any physicist would expect, the short answer is 'no.'" + + + + + + + + TestTube Plus is built for enthusiastic science fans seeking out comprehensive conversations on the geeky topics they love. Host Trace Dominguez digs beyond the usual scope to deliver details, developments and opinions on advanced topics like AI, string theory and Mars exploration. TestTube Plus is also offered as an audio podcast on iTunes. + + + + + + + + Trace Dominguez on Twitter https://twitter.com/TraceDominguez TestTube on Facebook https://facebook.com/testtubenetwork TestTube on Google+ http://gplus.to/TestTube + + + + + + + +
Views: 250401 Science Plus
Professor Stephen Hawking explains how by traveling at near light speeds, we can travel into the future. Into The Future With Stephen Hawking - Time Travel This video Belongs to Discovery Communications and is being used for educational purposes only.
Views: 770229 WeAreStarStuff51