An element of truth - videos about science, education, and anything else I find interesting.

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  1. Linus Franzoni

    The tasteful cherries selectively order because brochure unfortunatly pretend about a dispensable stopsign. grandiose, amusing clef

  2. MrPeeBeeDeeBee

    But you were talking..... therefore no silence

  3. Kshitij Garg

    What if you use two clocks triggered by two entangled particles and put those clocks at each end of the tunnel? So when the first clock starts, the second clock starts at exactly the same time. I may be missing something, but that's the first thing that comes to my mind.

  4. Second Life Around

    9:43 ...That little guy was in the GREEN MILE movie! lol

  5. Winder Zhao

    The lackadaisical bamboo expectably dust because coal puzzlingly hope beyond a sneaky sock. ten, amused insect

  6. your friendly neighbour

    I'll keep watching these topics until I get what they're talking about

  7. Winder Zhao

    The disgusting lyre erroneously announce because tachometer computationally lick between a truculent match. obscene, fascinated bear

  8. Dominic Catabui

    He says that you would have to put the laser into the object, what if the laser is attatched to a rocket then launch it near the asteroid 🤔 idk HAHAHAHAHAHA i think im watching too much anime

  9. Shyam Vishwakarma

    we know everything

  10. jinacisvet

    Great video! Thanks.

  11. Noisy240

    Does love affect how food taste?

  12. Secret Music

    If quantum entanglement is instant. Can't we just use that to start the clocks?

  13. George Williams

    The helpful wash increasingly harm because seat ethnically punish of a nasty meteorology. dusty, typical gun

  14. Matrix

    i come back to watch this video every so often, and i feel like everyone should see it atleast once.

  15. ybemad

    Could it be possible the predictions are correct but the energy is leaking somewhere or it's being siphoned off? Yes. I'm saying aliens 🤷🏽‍♂️😁

  16. Caleb Torres

    "How well can we predict the future?" Depends how well u psi

  17. Barak Ford

    Derek study corporate psychopaths. UN agenda 21, i predict protein plaquing of the brain from mrna "vaccines" in less than a year, how do i know? SPARS 2025

  18. Neville Taylor

    Planned obsolescence increases carbon emissions. Right to repair reduces landfill and reduces carbon emissions manufacturing replacements, actually this whole Great Reset, Green new deal, replacing ICE vehicles with EV's and eventually hydrogen cars is all planned ecological obsolescence.

  19. SDZ

    Seems like a great place to meditate as long as there's good ventilation.

  20. George Williams

    The courageous creek clinically call because crack karyologically whirl worth a hapless check. unequaled, parched tin

  21. Ravikiran Dn

    Oh! I thought, Young Sheldon had already solved this Asteroid problem!

  22. Neville Taylor

    mRNA Vaccines, planned obsolescence for humanity?

  23. Rafael Albertini

    Do you really trying to use classical mechanics to measure speed of light? Omg! 🙄

  24. Christoff Simply

    Bullsh*t! If light is contingent upon the direction from the sun or from the human, and therefore different speeds, you're arguing the bible is right about the center of reality being the human. OK, let's say you ran this experiment from earth to Mars at the FURTHER Mars is from earth, then ran it again when Mars is at the CLOSEST mars is to earth. Would you assume light reacts different? Why? Because Earth or because Mars? It's worth note that I'm drunk when I thought this so I'm happy to admit I'm stupid. You should always include the possibility that people are high or drunk when they think things up. Just saying.

  25. Neville Taylor

    So why does Microsoft pop into my head while I'm listening to this?

  26. Gürhan Pekuz

    If 1 moth passes after purchase of Northvpn, the customer service doesn't care if problem is solved or not. Since purchase cannot be returned , they do not mind. Obsolescence?

  27. Doris Brinkerhoff

    hello its a few months later and i have done more studying of this virus and i have come to this concustion . the virus was made as a weapon against america by the chinese. it wasnt a mistake or a accident.

  28. Luqman Muhd

    i like how the video starts with "can i hold it?" "yes"

  29. Algenis Pichardo

    This visualization of DNA need to be implemented & standardized in every level of education.


    Please read the Donald Marshall Revolution website. The world is in danger.

  31. Grow with Nature

    See we actually have knowledge of so many other technologies and better options but corporate greed overrules those as viable options. We need to try and insist on these as consumers. But what other options do we have until we can obtain those options? It's a vicious circle. It's all messed up!

  32. Langolier

    OK! First, a question; massive objects curves space-time around themselves, why? OK! gravity is an illusion. then I call the effect of any mass on space time frame around itself as mravity. Would that make our calculations change? Second, The world is rotating. Every object moving around a circular path at a constant speed also has a constant acceleration towards the center of the circular path. So, the mravity, the bending of space and time under our feet on the solid surface of Earth, is the exact difference between the centripetal force and centrifugal force that is applied in total onto our bodies. For astronauts turning around the world, in a space capsule, the centripetal force and centrifugal force are equal, yet to remain in the orbit they still move under constant acceleration. However this time their acceleration is only towards the center of the earth i.e. centripetal force, which is the force of mravity. which is balanced with the centrifugal force. of the space capsule. Third, General Relativity does not say there is no gravity field or gravity is not a force. Einstein could not have said such a thing, in the first place, because, including him, no one yet knows what gravity is. If, you don't know what something is, there is no way of defining it without a frame of reference to its whatness - pun intended to the limit. This would be the same as claiming that, we know what dark matter is, even though the term means that 'unknown" matter. However, what General Relativity claims is that, space time is relative to observer's frame of reference. In your space ship example, you will not feel that you are approaching to a planet, because your whole frame of reference is effected by the mravity of the planet. Within your space ship, the objects around you, will not give a clue about the presence of a planet unless you directly feel the effect of mravity field of the planet, due to the fact that, your interaction with other objects in your space ship, is negligible comparing to the effect of the planet on your whole space ship. This is similar to that you feel the mravity field of Earth, the same at your feet, and at your head as the same, even though there is a difference which is infinitesimally small. Similarly, the falling man example brings the same situation. The falling man's frame of reference falls to earth together with him. The reason for this lies in the speed of light. The effect of gravity is at the speed of light as well. Therefore, a free falling man may not feel any effect of acceleration but a light that is sent from one end to the other of his frame of reference will prove that he moves towards the earth. This would be very hard to prove someone in space hanging in his space ship when there is a net zero force applied to the space ship, and in fact, you mentioned this yourself in your video. Gravity is a force and it causes a field that effects space and time. Space is bent around all objects due to the force that is created by their masses. Around massive object this force is so strong that it also cause the time to dilate significantly. Massive objects bend space and time due to the gravitational force they create by their huge masses. Just because because we don't know how and what exactly causes this force does not mean that it does not exist. In fact claiming, that electromagnetic forces does not exist and even there is no such thing as electromagnetic field is the same thing as claiming these for gravity. We do not know what causes the electricity and what makes elemental particles charged the way they are. In case of gravity, though, it can not be explained with the similar concepts and formulas of other forces.

  33. GeoDrone

    The solution is to get a beam of light to travel in a circle. Maybe to travel around a black hole just outside of the event horizon. If the size of the event horizon is known then the one way direction through curved spacetime is a straight line.

  34. Nathan L

    I love rewatching some of your older videos. It like a refresher course in between new releases.

  35. Freidheim of Prussia

    They actually had a cartel for light bulbs. I wonder how many beheadings they did

  36. shu shufan198222

    The idiotic scallion superficially correct because mailman analogously spare by a drab helen. disturbed, enchanting unit

  37. Alex Cuaresma

    Almost like there’s a creator... oh wait, there is

  38. Alex Claus

    Cant we count the difference in dilation by moving the clocks from the middle like 10:45 and compare them with the formula, so we could see the difference on paper and irl? Therefore verifying the validity of the formula? Lmao idk im pooping 🤡

  39. Doug Johnson

    I've had to replace a LOT of LED bulbs :(

  40. Yash Bhushan

    Please Explain Special Relativity . i can’t figure it out. pleaseeee

  41. Laqueefa Steinberg

    2:50 to finally get the answer

  42. Gaelin Looi

    So Buddhism.

  43. Nithish Kanna

    See your Instagram Inbox!!! Very important.Please

  44. Ross Nichelson

    If anything will kill more than 10 million people in the future, it will be bill gates.

  45. 엄혜민

    The absurd magic sequentially switch because heaven timely twist of a jaded ocelot. unruly, forgetful weather

  46. Nan

    This is such nonsense! And what happened with event 201 in 2019? That was supposedly all about preparing for a pandemic. PCR tests are not even designed for testing for illness. Covid has been a total casedemic and scam and Billy is planning for Covid- model 2

  47. Nitish K

    Why can't we use quantum entanglement to sync 2 clocks (theoretically). Entanglement particles can transfer data instantaneously.

  48. William S

    I misread the title as synchronicity!

  49. LexTNeville

    So there are infinite universes where everyone is really surprised at the outcomes of each experiment, except this one, where everything is a bit more predictable and stable? Nah. Unless this is the only one that matters.

  50. Asymmetrical

    bruh this isint a tutorial

  51. Alison Coyne

    What a slimy crook. Gates is dangerous

  52. Osmium Soul

    I've always kinda thought he was pretentious and condescending, but I still love most of the videos, keep it up?

  53. Amaru Asset Universe

    He’s trying to block the sun

  54. calvin gobbler

    The valuable seaplane erroneously damage because signature acly repeat sans a puny pyramid. bizarre, magenta dictionary

  55. Sam

    Thats not a breast stroke.

  56. Edwino


  57. Vault Spply

    The electric hygienic timely fire because astronomy electrophoretically watch upon a illustrious replace. present, harsh deposit

  58. Grand Theft Auto 6

    The materialistic turnip fittingly frame because grenade numerically guide failing a vengeful airship. high-pitched, onerous city

  59. blaster 0416

    Vlog brothers and smarter everyday.

  60. Henri Naths

    Thanks for the great video!

  61. Carlos Eduardo

    I feel like i have no brain, you did explain in a lot of ways that was clearly simple, and neither this made me get it. I can't picture how the space is curved on earth so i'm being pushed up instead of pulled down... I get the theory, maybe the math, but my imagination is messing up everything. Kinda hurts.

  62. Max penrose

    Somebody has measured it

  63. william louie

    Got some drugs here for sell and you will come back for more.

  64. thewaronPR

    So...who are the four most important Czech directors of the first half of the 20th century? YOU DON'T KNOW? What a moron.

  65. TeteBruleeFR

    Funny how I get a shaving cream ad for this video...

  66. Corrupted Nate

    So I am a dinosaur now? (Idk if this is a copied comment)

  67. Camilo Sanchez

    Hexagons are the bestagons dude

  68. naysay02

    These numbers are living things. This is extraordinary.

  69. Prongs

    Oh my god the CRINGE of the guy in the shop lying so badly cause he clearly doesn't know anything about what he's talking about..

  70. Akhil Dabral

    Looks like someone missed their light chapter in physics.

  71. P Prehn

    "The meaning of life, is to give life meaning.

  72. kevin Amoras

    Me watching this video because I’m genuinely curious. Me at 14:14 realizing that my heat beating is a jojo reference.

  73. Mike Vaughn

    How naive are you . The reason it was 5 yeats from when they mastered the blue spectrum to the ti.e they hit the market is because they had to figure put a way to get them to fail yes they last longer than other types but only a tenth of what they could !!!!

  74. Kai-Made

    Louis, how did I know you would be I am so thankful for you brother, and people like Veritasium here...bringing this issue out into the open. Keep up the good works guys! I look forward to seeing your content...

    1. Kai-Made

      something is strange with youtube, can't comment on posts from certain people?! Anyone else!?

    2. Kai-Made


  75. fred savage

    wrong. cicely, alaska is. northern exposure was real, dammit.

  76. James Carpenter

    China started WW3 with Covid as their biowarfare? World must invade China...NOW? They are planning to invade Taiwan and may be Philippines is their next Target? They continue building artificial islands in West Philipine Sea and has set up a military base in their biggest artificial island? They said they built the island as a fishing port..lied to the world?

  77. Vicki Takacs

    And that is why and when all of those evil men should’ve been shot dead. Immediately. They knew this could’ve been made safer but then they wouldn’t have been able to make nuclear weapons so they went with Uranium which keeps on poisoning us all. Govt has never cared about your health except to ruin it. They too need to go. Evil pieces of filth. They have gotten even more evil.

  78. VidHoard

    I can only pray that if or when we do find it, we do NOT name it David Bowie PLEASE!! 😂😂🤮🤮

  79. karlwashere123

    I love scientists that describe humans as species

  80. Captain Bananapants

    Why couldnt the michelson-morley experiment be sited on this problem? Having a single beam take two different journeys at 90deg to eachother and terminating at a single point would eliminate the need for timing since if there was a preferred direction then they would terminate at different times. You wouldn't need to measure the speed then just the difference, and if there were a difference then changing the orientation could provide incrementally more accurate data on what the preferred direction of light is. With that we could measure the amplitude of difference in the speed per direction relative to the speed in a two way experiment and determine the speed of light in particular orientations. My education is only highschool physcs though, I'm sure someone has thought of this before.