I’d be interested to know your thoughts on this format. Would you like to see more ‘Talking to scientists about their recent publications on Skype’? Maybe not on this channel but on Sciencium perhaps?

@killerhund2002

5 жыл бұрын

Yes!

@OHHHHHIMMEL

5 жыл бұрын

I love the idea of listening to the scientists talking about their projects and discoveries. Please do more of those :)

@AlanColon

5 жыл бұрын

This video was 𝙞𝙣𝙘𝙧𝙚𝙙𝙞𝙗𝙡𝙚. My jaw was on the floor by the luck!

@vikranttyagiRN

5 жыл бұрын

Woah! Do you have another channel too? I didn't know that

@AlanColon

5 жыл бұрын

Actually, Derek, 𝗩𝗲𝗿𝗶𝘁𝗮𝘀𝗶𝘂𝗺 is a fine home for all your videos. 𝗦𝗰𝗶𝗲𝗻𝗰𝗶𝘂𝗺 is nice, but I don't think your subscribers care about the separation. The format was great. Do all your formats here. (edit) Also, freebie tip: reformat and repost your Sciencium videos here as Veritasium videos for near effortless view time. You ARE Veritasium. Drop the identity crisis. Huge fan. (edit 2) Vikrant's comment illustrates my point. You don't need the separation. Stand behind your brand. (edit 3) Also, splitting content between channels mostly serves to reduce the rate of release on each channel. Can you see subscribers in common? If they are mostly in common, the separation should be detrimental interms of 𝘵𝘩𝘦 𝘢𝘭𝘨𝘰𝘳𝘪𝘵𝘩𝘮.

I liked the "New high score" comment. Science kind of feels like that sometimes doesn't it?

@prashannanepal5038

5 жыл бұрын

💖🇳🇵🇳🇵🇳🇵🇳🇵💖💖💖💖🇳🇵🇳🇵🇳🇵🇳🇵🇳🇵🇳🇵🇳🇵💖

@TheScienceBiome

5 жыл бұрын

SmarterEveryDay I like your channel, Destin!

@jasonstone1833

5 жыл бұрын

very much so, especially as they mentioned, "we already know that general relativity must not be the complete solution" (galaxy rotation etc.), so all we can hope to do is add to the pile of "what we know, and to what degree do we know it" until we can collect enough anomalies (in Thomas Khun's sense of the word) to explore the new paradigm. And measurement standard's breakthroughs have always led to bursts of innovation...BTW, props to your video on whitworth (Smarter Every Day 206). Thanks Destin, thanks Veritasium--You guys (and the others) are making a huge difference on the front lines! God Bless

@veritasium

5 жыл бұрын

It sure does. Like in your video about precision measurement, who needs to measure a millionth of an inch? But sometimes you really do.

@vikranttyagiRN

5 жыл бұрын

Love you Destin

Just as a completely irrelevant aside: I worked on GPS in the 90s. We had to correct for tiny discrepancies in calendar time compared to real time (the Earth orbits the Sun every 365.25 days, giving us leap years, but for space we have to count the leap seconds). For orbits, it matters that Earth isn't quite round. It's a bottom-heavy oblate sphere. For the clocks on GPS, it matters that the ground is sometimes closer and sometimes more distant in a perfectly circular orbit, because of elevation changes in the ground itself. Large mountains have their own gravity systems that can change the clock times on something as precise as a cesium beam clock and the speed the bird flies at. I wasn't any kind of a scientist in those days, just the guy who ran the coms for satellite contacts. This all blew my mind.

@samanvayasrivastava559

2 жыл бұрын

Wow

@chosentonessournotes

2 жыл бұрын

Really cool!

@bess3327

2 жыл бұрын

this reminds me of the NASA GRACE mission. They measure the change in the distance between two satellites to pick up the changes in the local gravity field of the earth, essentially measuring terrestrial water storage change over land, among other things

@mikebrilla7749

Жыл бұрын

Bvhbg

@ChandrasegaranNarasimhan

10 ай бұрын

@@bess3327 I read about that too in time magazine. My theory is that we need a constellation of satellites to study the radial, pole to pole and circumferential variation. We need multiple satellites because we want to rule out the possibility that variation is caused by noise.

-We confirmed General Reletivity, Unfortunately. -You say unfortunately? -Yes because we are looking for deviation from General Relitivity because we know this is not the ultimate theory. ngl best line I ever heard.

@huskiehuskerson5300

2 жыл бұрын

Yeah sadly there's some other theory that agrees with Quantum Mechanics

@vader567

2 жыл бұрын

@@huskiehuskerson5300 yes.. currently the most promising theory is the "String theory" but it needs a 10 dimensional universe to be proven as a fact... scientists are currently working on that

@huskiehuskerson5300

2 жыл бұрын

@@vader567 That's the only problem with it that it can't be tested

@vader567

2 жыл бұрын

@@huskiehuskerson5300 I think now they are just trying to simulate a 10 dimensional universe and see if that universe has the same properties our universe have and then they will be able to say... if our universe is actually 10 dimensional

@davidmudry5622

Жыл бұрын

They don't like general relativity because that means falling things are not accelerating but are standing still.

Imagine the conversation: "I'd like to borrow your misplaced satellites for three years"

@Soken50

5 жыл бұрын

They had to wait for all the galileo satellites to be up there to use them anyway.

@pratik8405

4 жыл бұрын

Crb

The message here is: Try, because even in failure, you can succeed.

@Censtudios

5 жыл бұрын

Isn't that a quote from Sun Tzu? Art of War. Pretty sure he has a quote that's very similar to this.

@e11eohe11e

5 жыл бұрын

There's another quote that basically says. You don't fail 100 times. You discover 100 ways not to do something.

@shruggzdastr8-facedclown

5 жыл бұрын

Pesterenan: As Adam Savage says "Failure is an acceptable result"

@veronicagorosito187

5 жыл бұрын

I would say ''Failure is not the end, failure opens another door, maybe the door of success''.

@TheMastertbc

5 жыл бұрын

Science is a one big learning from failure

"We confirmed the general relativity... unfortunately. 🙄" Perfect summary of the scientific method!

@liquidminds

5 жыл бұрын

Against common believe, the scientific method is all about disproving itself. Scientists never complain about people trying to refuse their theories. They are only upset about the quality of the criticism not meeting their standards.

@YTEdy

3 жыл бұрын

More like the engineering method I would think. Airplane falls from the sky. Engineer says "I just confirmed gravity".

@mudfossiluniversity

3 жыл бұрын

e=mc2 is ridiculous if light has no mass...we know it has energy but if m=0 then light energy =0 Albert was VERY VERY WRONG about all of his claims. Light is a particle has mass and can accelerate SHOWN HERE... we have worshiped nonsense for 100 years. kzread.info/dash/bejne/dpp61rKamNixqtI.html

@YTEdy

3 жыл бұрын

@@mudfossiluniversity e=mc^2 wasn't Einstein's equation. That's the short version that gets repeated. Einstein's actual equation was: e^2 = (mc^2)^2 + (pc)^2 - p being momentum. That formula explains the energy of zero rest mass light.

@mudfossiluniversity

3 жыл бұрын

@@YTEdy Still completely wrong and a vacuum makes no diff because it is magnetic attraction (gravity) that compresses the 21cm line on earth vs less compression in space. Therefore atomic clock is the issue. So much so wrong and the atom is 100% electrons in resonance stable freq.

The more you look into General Relativity, the more of a genius you think Einstein was.

@PedroAmA

2 жыл бұрын

and the weirdest thing is that he did not win a Nobel for this. but the foto electr effect

@SAMACAG

Жыл бұрын

Please watch on YoTube: ... EMS Einstein Munchausen Syndrome ...

@alonsoACR

Жыл бұрын

Einstein WAS a genius but to say he made GR all by himself is a mistake. It was a gathering of hundreds of scientists, and Einstein built atop it, giving it consistency and legitimacy. But he did not figure all that out by himself, not by a long shot.

@DodgerX

8 ай бұрын

​@@PedroAmAthats pretty great in itself but i get your point

@SportsBettingFacts

22 күн бұрын

You haven't even started to look. You are just watching propaganda. Relativity is a completely retarded theory that fails on many levels. Math, logic, etc

There are no mistakes, only happy accidents. -Bob Ross

@iwansays

5 жыл бұрын

That's pretty relative, so I bet there are.

@Cordell-

5 жыл бұрын

Sahil Tiwari WHOOPS, I ran over someone with my car. Oh well, thanks to Bob Ross it is a happy accident :)

@timq6224

5 жыл бұрын

Ever make mistakes in life? Let's make them birds. Yeah, they're fecking birds now.

@canyadigit6274

5 жыл бұрын

Sahil Tiwari no... Master Uguay...

@753238

5 жыл бұрын

happy accident when my mom and dad created me

5:19 - You know the science is getting serious when you have 13 significant digits...

@AhnafAbdullah

5 жыл бұрын

You know the science is getting serious when the momentum of photons from the Sun is the largest source of error

@garetr

5 жыл бұрын

@@AhnafAbdullah Indeed.

@adventureswithfrodo2721

5 жыл бұрын

Guess you mist the day they talked about Sig figs in your science 101 class. There is only 3 Sig figs. Sorry but you just wrong.

@ender2034

5 жыл бұрын

@@adventureswithfrodo2721 guess you "mist" spelling 101

@catchphase

5 жыл бұрын

Adventures with Frodo also... there are 3 decimal places... there are 13 significant figures. 3 significant figures would be 1,540,000,000.000

Great video Derek. Love the graphics and animations. Keep up the great work :)

Often struggle with the concepts, but love this video and the format. More please!!

The circumstances that led to this test/experiment, the willingness of people to cooperate and trust each other, and bumps along the way make this story incredible.

@SAMACAG

Жыл бұрын

Please watch on YoTube: ... EMS Einstein Munchausen Syndrome ...

This was a really cool video Derek! I think this format works great on this channel, I'd definitely watch more of this kind of thing. It also made me wonder about how much we know about the limits of our understanding of general relativity. The scientists said that they were disappointed to see no deviation from the theory. Do we know where we think we might see a deviation, or is it a race to more sensitive measurements? Next experiment, a clock in an elliptic orbit around the Sun perhaps?

@veritasium

5 жыл бұрын

It is indeed a race to the bottom - if theory matches experiment down to 9 or 12 decimal places, it’s going to look pretty unbeatable. Up until this experiment it was good to 4 or 5 decimal places

@Pukkeh

5 жыл бұрын

General relativity as we know it is incomplete, because at very small time and length scales it is incompatible with quantum field theory, which itself is very successful in describing non-gravitational interactions. I think most physicists believe that general relativity will likely hold up for all measurements that involve times/distances much greater than the Planck time/length, but there is no experimentally verified theory of quantum gravity that works at such small scales.

@norbertocriado7718

2 жыл бұрын

@@Pukkeh Hi! How much successful is quantum field theory describing gravitational interactions? So I believe quantum field theory ',,, as we know it is incomplete'. I fully respect both theories in their proper scenarios.

@frankdimeglio8216

2 жыл бұрын

WHY AND HOW THE CLEAR, TOP DOWN, ULTIMATE, AND BALANCED MATHEMATICAL PROOF OF THE FACT THAT ELECTROMAGNETISM/ENERGY IS GRAVITY IS GIVEN BY THE FACT THAT E=MC2 IS F=MA: Energy has/involves GRAVITY, AND ENERGY has/involves inertia/INERTIAL RESISTANCE. "Mass"/ENERGY involves BALANCED inertia/INERTIAL RESISTANCE consistent WITH/as what is BALANCED electromagnetic/gravitational force/ENERGY, AS ELECTROMAGNETISM/energy is gravity; AS E=MC2 IS F=ma. GRAVITATIONAL force/ENERGY IS proportional to (or BALANCED with/as) inertia/INERTIAL RESISTANCE, AS E=MC2 IS F=ma; AS ELECTROMAGNETISM/energy is gravity. Consider the man who IS standing on what is THE EARTH/ground. Touch AND feeling BLEND, AS ELECTROMAGNETISM/energy is gravity; AS gravity/acceleration involves BALANCED inertia/INERTIAL RESISTANCE; AS E=MC2 IS F=ma !!! SO, objects fall at the SAME RATE (neglecting air resistance, of course); AS ELECTROMAGNETISM/energy is gravity; AS E=MC2 IS F=ma. Moreover, the rotation of WHAT IS THE MOON matches it's revolution. The Earth constitutes the FULL DISTANCE in/of SPACE in BALANCED and UNIVERSAL relation to what is the MIDDLE DISTANCE in/of SPACE; AS E=MC2 IS F=ma; AS ELECTROMAGNETISM/ENERGY IS GRAVITY !!!! (The sky is BLUE, AND THE EARTH is ALSO BLUE. The stars AND PLANETS are POINTS in the night sky !!!) Accordingly, time DILATION ultimately proves ON BALANCE that E=MC2 IS F=ma; AS ELECTROMAGNETISM/energy is gravity !!! INDEED, TIME is NECESSARILY possible/potential AND actual IN BALANCE; AS ELECTROMAGNETISM/energy is gravity; AS E=MC2 IS F=ma. Gravity IS ELECTROMAGNETISM/energy. E=MC2 IS F=ma. This NECESSARILY represents, INVOLVES, AND DESCRIBES what is possible/potential AND actual IN BALANCE, AS ELECTROMAGNETISM/energy is gravity. Very importantly, outer "space" involves full inertia; AND it is fully invisible AND black. Think. It ALL CLEARLY makes perfect sense. BALANCE AND completeness go hand in hand. Great !!! SO, a given PLANET (INCLUDING WHAT IS THE EARTH) sweeps out EQUAL AREAS in equal times consistent WITH/AS E=MC2, F=ma, AND what is PERPETUAL MOTION; AS E=MC2 IS F=ma; AS ELECTROMAGNETISM/energy is gravity. Gravity IS ELECTROMAGNETISM/energy. The stars AND PLANETS are POINTS in the night sky. A PHOTON may be placed at the center of WHAT IS THE SUN (as A POINT, of course), AS the reduction of SPACE is offset by (or BALANCED with) the speed of light (c); AS E=MC2 IS F=ma; AS ELECTROMAGNETISM/energy is gravity. TIME dilation ULTIMATELY proves ON BALANCE that E=MC2 IS F=ma, AS ELECTROMAGNETISM/energy is gravity. Great !!!! Gravity AND ELECTROMAGNETISM/energy are linked AND BALANCED opposites, AS E=MC2 IS F=ma; AS ELECTROMAGNETISM/energy is gravity !!!! It all CLEARLY makes perfect sense. MAGNIFICENT !!!! By Frank DiMeglio

@frankdimeglio8216

2 жыл бұрын

@@norbertocriado7718 WHY AND HOW THE CLEAR, TOP DOWN, ULTIMATE, AND BALANCED MATHEMATICAL PROOF OF THE FACT THAT ELECTROMAGNETISM/ENERGY IS GRAVITY IS GIVEN BY THE FACT THAT E=MC2 IS F=MA: Energy has/involves GRAVITY, AND ENERGY has/involves inertia/INERTIAL RESISTANCE. "Mass"/ENERGY involves BALANCED inertia/INERTIAL RESISTANCE consistent WITH/as what is BALANCED electromagnetic/gravitational force/ENERGY, AS ELECTROMAGNETISM/energy is gravity; AS E=MC2 IS F=ma. GRAVITATIONAL force/ENERGY IS proportional to (or BALANCED with/as) inertia/INERTIAL RESISTANCE, AS E=MC2 IS F=ma; AS ELECTROMAGNETISM/energy is gravity. Consider the man who IS standing on what is THE EARTH/ground. Touch AND feeling BLEND, AS ELECTROMAGNETISM/energy is gravity; AS gravity/acceleration involves BALANCED inertia/INERTIAL RESISTANCE; AS E=MC2 IS F=ma !!! SO, objects fall at the SAME RATE (neglecting air resistance, of course); AS ELECTROMAGNETISM/energy is gravity; AS E=MC2 IS F=ma. Moreover, the rotation of WHAT IS THE MOON matches it's revolution. The Earth constitutes the FULL DISTANCE in/of SPACE in BALANCED and UNIVERSAL relation to what is the MIDDLE DISTANCE in/of SPACE; AS E=MC2 IS F=ma; AS ELECTROMAGNETISM/ENERGY IS GRAVITY !!!! (The sky is BLUE, AND THE EARTH is ALSO BLUE. The stars AND PLANETS are POINTS in the night sky !!!) Accordingly, time DILATION ultimately proves ON BALANCE that E=MC2 IS F=ma; AS ELECTROMAGNETISM/energy is gravity !!! INDEED, TIME is NECESSARILY possible/potential AND actual IN BALANCE; AS ELECTROMAGNETISM/energy is gravity; AS E=MC2 IS F=ma. Gravity IS ELECTROMAGNETISM/energy. E=MC2 IS F=ma. This NECESSARILY represents, INVOLVES, AND DESCRIBES what is possible/potential AND actual IN BALANCE, AS ELECTROMAGNETISM/energy is gravity. Very importantly, outer "space" involves full inertia; AND it is fully invisible AND black. Think. It ALL CLEARLY makes perfect sense. BALANCE AND completeness go hand in hand. Great !!! SO, a given PLANET (INCLUDING WHAT IS THE EARTH) sweeps out EQUAL AREAS in equal times consistent WITH/AS E=MC2, F=ma, AND what is PERPETUAL MOTION; AS E=MC2 IS F=ma; AS ELECTROMAGNETISM/energy is gravity. Gravity IS ELECTROMAGNETISM/energy. The stars AND PLANETS are POINTS in the night sky. A PHOTON may be placed at the center of WHAT IS THE SUN (as A POINT, of course), AS the reduction of SPACE is offset by (or BALANCED with) the speed of light (c); AS E=MC2 IS F=ma; AS ELECTROMAGNETISM/energy is gravity. TIME dilation ULTIMATELY proves ON BALANCE that E=MC2 IS F=ma, AS ELECTROMAGNETISM/energy is gravity. Great !!!! Gravity AND ELECTROMAGNETISM/energy are linked AND BALANCED opposites, AS E=MC2 IS F=ma; AS ELECTROMAGNETISM/energy is gravity !!!! It all CLEARLY makes perfect sense. MAGNIFICENT !!!! By Frank DiMeglio

In case you rely on captions to understand this video, the captions about the conclusions are wrong (8:25~8:32) This is what they are actually saying: 8:25 "I think we both agree that we didn't prove Relativity wrong" 8:30 "The reason is that we confirm the General Relativity ...unfortunately"

@vedmainde

3 жыл бұрын

If they knew English language then why would they rely on captions and if they don't know well then ur time is wasted😂😂

@AleksandarGrozdanoski

3 жыл бұрын

@@vedmainde good one

@rbr1170

3 жыл бұрын

@@vedmainde I know the English language well enough and still rely on captions from time to time due to some accents (e.g. very thick British accent or other Europeans accents).

@vez3834

3 жыл бұрын

@@vedmainde Deaf people?

@vedmainde

3 жыл бұрын

@@vez3834 yeah👍🏻

Amazing. I am so glad we have people that can grasp this science. What a fortunate event!

turn a bug into a feature

@jagan.nathxn

5 жыл бұрын

Gmail... unsend feature

@gwyn.

5 жыл бұрын

Bethesda… Ubisoft… EA…

@MrOliver1312

5 жыл бұрын

Apple

@akopper

4 жыл бұрын

GunZ the duel

@EvilDudeLOL

Жыл бұрын

Mojang Studios

Hey. My parents also said they were happy about their accident

@cheesywiz9443

5 жыл бұрын

xD

@osearthesp

5 жыл бұрын

But they have too... ;]

@XtreeM_FaiL

5 жыл бұрын

The Mastr They drop you when you were a baby?

@AliceTheSpider

5 жыл бұрын

so you have a brother or sister?

@cyberxxxcyberxxx9464

4 жыл бұрын

Bruh😂

I have had a few drinks and wasted too much time commenting on you tube sites that say the earth is flat or that Einstein lied or gravity doesn't exist etc etc , stumbling on this clip has restored my faith in humanity, thanks for posting this .really enjoyed watching this cheers

"Trying is the first step to failure" - Homer Simpson.

Fascinating! I followed Gravity Probe B in detail during the whole sequence of it's pre-launch and post mission analysis -- but I never knew what Gravity Probe A was about! Thanks for the info!

Woah nice collab with Jacksfilms

@orlando9163

5 жыл бұрын

I'm glad I was not the only one

@Heliocentriciv

5 жыл бұрын

I was about to say that lmao

@monyetguru

5 жыл бұрын

Bruh lmao

@sheeperskipps

4 жыл бұрын

I scrolled down just to make sure this existed.

@mediahub7692

4 жыл бұрын

Jacksfilms dad

3:36 I love me some simple harmonic motion and sine waves.

I love this format, I love the other one. Thank you for your wonderful job.

Somewhere in heaven, Albert Einstein just went, "Booyaa!!!"

@circuit10

4 жыл бұрын

@@anandsuralkar2947 Well him inventing something and it turned into a bomb alone wasn't his fault. He actually actively helped with that though so maybe it was partly his failt, although he was actually German. He was Jewish though so he definitely wouldn't have supported the Nazis.

@lordx4641

4 жыл бұрын

@@circuit10 yeah the logic is same as if we should blane aryabhatta (a hindu mathematician ) for inventing the hindu numbers,number systems,geometry,trignometry etc whic led to such destructive sciences😆😆

@circuit10

4 жыл бұрын

True

@lordx4641

4 жыл бұрын

@@circuit10 or lets say eve adam or the first accidental fire deiscovered by mankind😂😂😂

@Feisty123

4 жыл бұрын

@@anandsuralkar2947 ok.… and? And for the record Eienstein firmly believed A-Boms were not possible. Upon finding that they were he tried his best to prevent their use. The man revolutionised physics and our understanding of the world

This kind of thoroughly informative and not completely dumbed down videos is exactly why it's worth waiting for your videos at their infrequency, I don't feel it needs to be split to Sc

@veritasium

5 жыл бұрын

Ok, thanks for your feedback?

@jazzling

Жыл бұрын

@@veritasium ??????????????

this video is the best that happened this week xD my dad once nearly fought me by trying to prove this wrong... im LOVING this. thank you.

I like how you've visualized elliptical orbit by spinning Earth and oscillating clock. That approach is not obvious, but clearly shows nature of the phenomena

What a lucid explanation of time in gravity wells! Brilliant graphics! Yes I like this interview format.

This feels like a good lesson for optimism and determination. Through catastrophic failure, with the mental fortitude to make the most of a bad situation, something brilliant was achieved. Nice one.

@yashuomiranda5953

5 жыл бұрын

Rosio durcal

This was very cool! Loved the format too 🙂

Great video Dark Matter is the term we use to label our ignorance of the observations we are currently making. The rules of GR, as an example, extend all the way to the earth's core. So the time dilation expressed at the surface, versus the sattelite would see similar (albeit greater disparity due to gravity's squared nature) at the center of the earth. What's really interesting about this is that an object in rotation (like the earth) will have to spin more rapidly at the core than at the surface. This in spite of tremendous friction and all in the vacuum of space. It is what creates our magnetosphere as matter stratifies by density in a gravity well. T his puts all the heavy ferrous metals in the core where they make a magneto as they spin away faster than the rest of the body. And all without dark matter

Veritasium exceeds my expectations in every video! By the way, If you have trouble understanding this video (which is incredible), Watch a video about Einstein's Visual experiment about general relativity- the 2 lightnings experiments.

@hrishabh

5 жыл бұрын

Tiny Medicine link?

@TinyMedicine

5 жыл бұрын

This Documentary explains it very well :www.imdb.com/title/tt5016974/ This YT video is somewhat good, but no where near the above film: kzread.info/dash/bejne/X55-l7KJk6-7p5s.html

@xinatorus3771

5 жыл бұрын

​@@hrishabh /watch?v=-jJ5PPcLUw8 was in NGC's "Genius"

@quaerenz

5 жыл бұрын

I didn't understand (because my low level in english) who are the two other scientists (not their names, in wich way are they related with the satellite)?

@blackfireburn

5 жыл бұрын

@@quaerenz they worked on the galieo project I beleive

I was waiting for you to talk about the new "ytterbium-atomic-clocks" for the whole video, because this was my first tought when I saw you video. XD Altough that didn´t happen it was still a great and informative video, keep up the good work.

Thank you for interesting subjects and good and concise storytelling.

You're actually talking method, noise sources, and so on. God that's awesome.

Your passion to learn is inspiring to people like me. I’ve gotten stuck in a rut and videos like this cheer me up.

This was so dang interesting. What a fantastic channel.

I want to say three things... 1. Your channel is awesome! 2. (Because) your research are awesome! 3. (Moreover) you are doing a great thing by spreading knowledge and the most important one is you are helping us to visit unseen places and see things virtually. 4. (Hence) the most awesome person with lots of modesty, innocence, honesty and genuineness seen is YOU!!!!👍👍👍👍👍

Thanks for opening my mind, Derek!

Finally! A Veritasium video!

Great Stuff , Thanks!! You Explain things in Simpler Terms To Comprehend.

Watching videos on science is brings so much understanding, studying it on paper was not so useful growing up.

I love time dilation and the science surrounding it, there are so many things more to test!! I can't wait until we're farther along in space travel and we can have parties in separate gravitational fields video call each other. Would either feed change speed? Would the change in the speed of the transmission destroy the message before reaching its receiver?? Science is cool

Pretty lucky to have this error with global navigation satellites specifically. The whole 'needing an accurate clock' thing is pretty well covered since that's kind of the satellite's purpose in the first place.

Amazing video, in clear terms and language so that a working class guy like me can understand. And as a bonus I liked the statement 'so maybe we don't know everything about gravity already'. It is the first scientist I hear say those words, there is still hope for scientists and therefor for the world.

Good explanation about the clock differences. And about atomic clocks.

Always love how easy Derek makes it to follow regardless of whether he's looking into simple or more complex ideas.

Great video!

@veritasium

5 жыл бұрын

Thank you!

@b2agy930

3 жыл бұрын

Thanks i appreciate it

@profile1157

2 жыл бұрын

@@veritasium omg

@arunraj2527

2 жыл бұрын

@@Salmanul_ ഡേ ഡേ അപ്പീ എനീച്ച് പൊടെ

I actually saw the launch of Gravity Probe A from Wallops Islanda in June 1976. I didn't understand it properly - I thought it was just about time dilation - but it was really exciting to see the rocket's tail in the night sky from the mid-atlantic.

"unfortunately".. very insightful. Love it!

One of the person on Skype looks like jackfilms after 30 years

@nikitapisek2901

5 жыл бұрын

Wich one, bro?

@spaaaaace8952

4 жыл бұрын

persons*

@tony-pc4kd

3 жыл бұрын

Toh Kya kare hum

I've never heard of relativity described as "gravitational red-shift." That actually makes it way easier to visualize for me

I always think “wow this video is long” until it’s over, and I want more more more!

Thank you. This will settle an argument I'm having with my dad. great Christmas dinner material.

Like most discoveries this high score was a win brought to us in part by an error. I dig it.

lesson learned: if you fail, look for things to do to make that failure a success on other thing

@daveedmunds4609

5 жыл бұрын

If all you have is lemons...make lemonade.

@theramendutchman

5 жыл бұрын

@@daveedmunds4609 If my "lemon-ade" you mean a "lemon grenade" that *BURNS THEIR HOUSE DOWN!!* Then Cave Johnson approves.

@0MoTheG

3 жыл бұрын

That is sadly what is done in scientific studdies: If you can't show what you intended, find something that is significant and act as if that isn't chance.

Very wonderful explanations beyond text book formalism...✌️

one of the best YT videos ive seen lately

What an insane coincedence. I just learned the einstein's field equations for general relativity no less than 3 days ago, and went over the equations for time dilations for special relativity and general relativity in my textbook no less than 3 hours ago. then this video just randomly pops up in my feed and it came it very recently.

@alicareem

5 жыл бұрын

Chris Choi I like this very much

@KaitouKaiju

5 жыл бұрын

The algorithm owns you now

@quantumeraser4833

5 жыл бұрын

Chris Choi "I just learned the einstein's field equations for general relativity no less than 3 days ago"--- 1. Maths (Equations) *ISN'T* Science (Physics). 2. "The Best Test of General Relativity" (Video Title) --- Every Delayed Choice and/or Quantum Eraser Experiment VALIDATE Beyond a Shadow of a Doubt that 'GR' is a Tear Jerkin' Belly Laugher; Phlogiston has more Veracity. "Quantum mechanics is *INCOMPATIBLE* with general relativity because in quantum field theory, forces act locally through the exchange of well-defined quanta." einstein.stanford.edu/content/relativity/a11758.html And since... "The Laws of Physics are *ALWAYS* Quantum Mechanical Laws." Ramamurti Shankar; CHAIR/Professor of Physics, Yale. Quantum Mechanics II. (33:50 minute mark) 'GR' is *"KABLOOIE !!"* (Industry Phrase). Of course, 'GR' (and 'sr') was PUMMELED by Elementary School Kids... *Primary School Falsification:* *TIME* is a "Conceptual" relationship between 2 motions. Specifically, it's based on an "Alleged" single rotation of the Earth on it's axis in respect to the Sun (A Day). It's a "CONCEPT" (Non-Physical). It is without Chemical Formula/Structure, no Dimensionality/Orthogonality, and no Direction or Location. You can't put some in a jar and paint in red. I mean c'mon now, let's reason together...can you Dilate/Bend/Warp Non-Physical "Concepts"?? Is it your contention that if you have Poison Ivy on the brain you could scratch it by thinking of Sandpaper?? "FREEDOM" is a Concept also...can you Bend that?? lol That which you are using to measure...isn't the thing you're measuring. *A Football Field is 100 Yards long but a Football Field isn't Yardsticks!! If I bend a Yardstick...does the Football Field bend also?* (The Yardsticks are analog to the Clock) -- (The Football Field is analog to TIME) So if something affects say...Cesium Atomic Clocks, or any modern "Clock" for that matter, does that then IPSO FACTO mean the Earth's "Alleged" rotation in relation to the Sun is Affected? These Two Mytho-matheMagical Fairytales (sr and gr) were falsified 30 seconds after their respective publications by 3rd graders @ recess, for goodness sakes. *IN TOTO, each are Massive Reification Fallacies on Nuclear Steroids!!* Recommendations: 1. 'File 13' your Textbook. 2. HEAVILY Reprimand your Professor for teaching Fairytales. 3. Drop this course/school and get a REAL "Science" Education. Hope it helps

@blameyourself4489

5 жыл бұрын

Google power.

@Cailus3542

5 жыл бұрын

Quantum Eraser Ya know, it’s fine to not understand general relativity, quantum mechanics and physics in general. You have no idea whatsoever about either, particularly since you seem to believe that mathematics is scary witchcraft to be avoided at all costs. What is NOT okay is to lie to yourself and pretend to be intelligent by looking up random quotes. Being ignorant of physics is alright. There’s nothing wrong with being ignorant of a certain subject, or finding maths to be a bit hard. Pretending to not be ignorant, however, particularly by spouting nonsense, makes you a fool. And that is simply sad.

I love the scientific method. It’s not, “hey, we’re right! yay!”, it’s “hey, we’re right! dammit!”

Wow! that's an amazing video, thank you for sharing

this makes it even more important to know how was the thery derived without observations first, its like how can we know about Fire without ever seen some beforehand. Also how do they know its time dilation but not a centrifugal force effect affecting the clocks at quantum level

Science: I didn't fail at what I was trying to do, I succeeded at something else entirely, and it was really cool.

That is such a typical skype thing when starting a call. "Can you see me?" "Can you hear me?" I laughed so hard at it

idk why, but seeing things like this brings tears to my eyes. It's amazing, THANK YOU ALL!

@yaboirogers6342

2 жыл бұрын

Right???? So many Veritasium videos make me just tear up because science and math are so cool and derek does such a good job

Hell of an explanation, i enjoyed

I see a new Veritasium video, I run as fast as I can to get to my computer to watch it :) For those who stumble upon this comment: *Happy Holidays!

@veritasium

5 жыл бұрын

Crucial Muzic happy holidays to you! And this is a delightful comment to read after I stayed up til 4am to launch it.

@NatapixAS

5 жыл бұрын

I totally get you! Merry Christmas!

@CrucialMuzic

5 жыл бұрын

@@veritasium Thanks so much! I had to pinch myself a few times to make sure Veritasium really replied back to me :) You work so hard on these videos, thanks so much for all you do. Love your content

@CrucialMuzic

5 жыл бұрын

@@NatapixAS Thanks so much! :)

@bernarrcoletta7419

5 жыл бұрын

Me too! Merry Christmas everyone!

I love this mentality that for a real scientist, finding by the experience that a result is predicted and became predictable by a theory is disapointed because you failed to find the issues ou this theory. Maybe Pecome Belva said "unfortunatly" because this experiment would have make him the one that found the issues to the Einstein general relativity and it would have propulse his career at the top if the tests had shown that it had some but I prefer to think that it was a professionnal scientist that prefer proceeding by elimination than constantly confirming their beliefs

Really insightful, thanks!

this video explained something that I had a hard time wrapping my head around. the part about you wouldnt notice the change in time but the clock notices.

@nmarbletoe8210

Жыл бұрын

the clock doesn't notice either actually. only a difference in two clocks at different heights is noticeable.

Wow! Just mind-blowing! So the best way to time travel into the future right now in that case is to live on a space station far away from Earth and then return to Earth a few years later? Would one year in space far from the Earth and other planets be significant enough a time frame for us to experience a significantly future Earth upon returning? Awesome video!

@veritasium

5 жыл бұрын

Thanks Mikey! The scientist was telling me that over 10 years the time difference between the satellite and Earth would be about 0.1s so... not significantly the future but future nonetheless

@nohaxjustxmod-sfs3984

3 жыл бұрын

wow you’re here

@aishwaryaachuthan1772

3 жыл бұрын

Isn't it that clock ticks slower near large bodies and faster away from it. So if you we are to live on a space station for long and then return to earth wouldn't we be a bit earlier according to our clock on the space station. Then... isn't it time travel to past?(and not future)

@Christopher_TG

3 жыл бұрын

That's one way to travel into the future, and is the only one that's technologically feasible today. The other method is time dilation, or moving so close to the speed of light that your movement through time is slowed.

@braker37

3 жыл бұрын

Yeah, but that way you would only travel to your own future relative to people on Earth. Meaning - more time will have passed for you that for them. To really travel into Earth's future, you need to go to a place with much greater gravitational pull. That way little time will pass for you and a lot will pass on Earth. Assuming your journey from Earth to that place is immediate, if a year passes for you, depending on the gravitational pull, 10, 20, 100 years may have passed on Earth.

Aren't we missing something? Along with the clocks slowing due to the closer approach to the Earths gravity, shouldn't we also consider that the satellites move faster when they are closer to the earth adding to the time dilated even more? ( just as a comet moves faster as it gets closer to the sun.) Also is the actual telemetry available to the general public?

@imraanmitha3280

2 жыл бұрын

The dilation due to velocity is well studied so you can subtract that effect out

All your videos are just awesome ...

I love your videos. From the last couple I've watched, seems you're clipping your dialogue signal. Even if the signal clipped you can always try some tools to repair it a little bit. Don't mean to complain. I know it's a bare triviality. Just a small tip from a fan :) All the best

If you’re using the frequency of the atom to keep time Is time being effected by gravity Or is the atom effected (Is that a dumb question?)

@jeromepuietz6879

4 жыл бұрын

Nicolas Cacace no valid question

@michaelibrahim9275

4 жыл бұрын

Time is being affected. From the atom’s perspective, nothing has changed, so it will continue to vibrate at its natural frequency. However, because our reference frame is much closer to the earth than the atom’s reference frame, we perceive the frequency to be higher than it really is. Hope this helps :)

Now *that’s* what you call best out of waste! Well, _million dollar waste._

@JasonKerlin

5 жыл бұрын

And how would you scientificly describe that metric " best out of waste". Probably the same way that these two scientists would say that a test which clock data had to first be altered to account for sunlight and then had to be computer modeled and post processed to get what they said was "close enough to use." The measurement uncertainty should have increased by a factor of 5 as the data was manipulated by a factor of 3. If they had to alter the data to account for sunlight it invalidates the experiment. If the data had to be modeled to get the noise low enough (and I don't know how accurate clocks as impressive as these were supposed to be would have issues with the measurements because of sunlight, because the only data is the clock measurement and the periodic measurement) to see the wanted observation it invalidates the experiment. This is confusing how people eat this blatant nonscience up.

@jesusmora9379

5 жыл бұрын

more like euro

@JasonKerlin

5 жыл бұрын

The issue is that it was an A to B comparison. Clock A on sattelite orbits and records time measurement as height changes throughout period of observation. Clock B on the ground records time measurement throughout period of observation. Compare clock signatures after test and see if clock A was any different than clock B at any point throughout 1000 days of measurement. How does the sun have anything to do with this basic test. Even if the altitude of the sattelite was changed that is fine. That is what was going to enable the ability to destinguish the hoped for effect as the gravity at different heights would cause a change in clock A. The data as the test is set up had no need to be altered except they tell you in the video if they didn't alter it then the measurement wasn't close enough to validate the hypothisis. Meaning it proved that they saw they were wrong and fudged the data and say the reason was an unexpected variable that was already figured in to make the measurement work in the first place. The data would either show a difference in clocks timestamps or not. They even say they had to run it through a computer modeling software to clean up noise that was interfereing with the ability to see the difference between clock A and B. What noise. It was a direct comparison in that this clock says it is a time and that clock says it is b time and see if there are any differences over the 1000 day observation period. This is obviously false and the data showed them that gravity has no effect on time as they hoped. That would mean the first accurate test of the General Relativity theory in 40 years had failed. And that would mean they have been wasting alot of the past hundred years on a concept that failed. They get paid keeping up this irrational theory that is a contradiction of the physics terms and definitions that have been proven accurate. Gravity can't affect light or time, clocks arent affected by gravity or how fast they are moving and light speed is not constant as it is affected by the material it is passing through and interacting with. This theory is bs, the stars are balls of liquid metallic hydrogen and are not giant gas balls with a nuclear furnace at the center. They are built of hydrogen in a lattice structure and are lit with electromagnetic induction. This is reality, not some magical place where massless particles are affected by gravity, which only attracts mass to mass. and why would gravity cause a clock to run any different. It would not and the idea is crap as well as gravity waves. It only attracts, it does not wiggle. It is the same as a magnetic field, it acts continuously and gets stronger the closer the masses get to each other it does not waver or wiggle and it can not affect time or light.

@moze_-

4 жыл бұрын

Probably more like billions.

Please make a video on tests of GR using the double pulsar and/or the triple pulsar system!

Can you bring up the calculations to see how exactly well the predictions confirm the theory?The red shift observed is a reality of space-time itself or the effect of a clock that behave differently following the variable intensity of the gravitational field ?

7 minutes in to this video and I can't stop laughing because I know there has to be flat earthers watching this video. Must be the density of the clock hahahahahahaha.

@sambishara9300

5 жыл бұрын

"European NASA messed up on purpose to generate fake evidence"

@hraharahra

5 жыл бұрын

Yep, crazy never sleep! Flefers are ridiculous!

@jimandaubz

5 жыл бұрын

Now, I went from smiling, enjoying the video thinking about the consequence, to laughing manically after I saw your comment.

@hybmnzz2658

3 жыл бұрын

How do people not find these jokes old?

@Veritasium; Could you actually fall into a black hole, or would the black hole 'die' before that happens? So according to general relativity, time 'slows down' in areas with a big gravitational pull (such as black holes). According to Hawking, black holes lose energy (thus mass) in the form of Hawking radiation but that proces is very slow, 10^70 years lets say (from our perspective). But since time slows down the closer you are to the center of a black hole, time needed for a blavk hole to 'die' would greatly decrease. My question is, by the time you get to the point of 'no return' or 'spaghettification' of the original black hole you were falling into, wouldn't that border move further towards the center of the black hole (from Hawking radiation), thus not killing you, and wouldn't this proces continue until the black hole evaporates, making you never able to fall passed a certain point? Does anyone know anything about this? All the articles about 'falling into a black hole' just say that after you've passed event horizon nothing can escape... I would love to get an answer to this question.

@prakash4033

4 жыл бұрын

After the zone ur atoms break downs so will not survive a after a point

@jaypaans3471

4 жыл бұрын

@@prakash4033 How do you *know*?

@jaypaans3471

4 жыл бұрын

Yeah. Interesting question. But unfortunately there can't be a empirical answer. So I wouldn't worry about it. Too much mind-boggling theories versus too little answers.

I got your curiosity ad before your video! 😭 When you realise just how much your life ORBITS around science.. 😅

Yes. Good part. Also, talk about the thinking behind the origins

I'm here as always,

@anandsuralkar2947

4 жыл бұрын

Cool

Speaking of rockets and clocks... i'm reminded of the HILARIOUS (though likely apocryphal) story of Wernher von Braun during the infancy of U.S. rocket program. Our story begins when a launch is delayed by a malfunction with the countdown time. But first a bit of context: even though it was rarely voiced, Braun was keenly aware of subordinates' discomfort due to his (then still recent) past as an SS Major responsible for overseeing development of Nazi terror weapons. So because of this swastika-clad elephant in the room, it remains unclear whether what follows was a defiant nose-thumbing at his silent critics, or (more likely) a risky attempt to use humor to deflate tension (with perhaps the same odds for success as using a sledgehammer to defuse a time-bomb) ANYWAY... according to accounts, when technicians scrambling to restart the countdown heard the shrill command, "Step aside!", they, as one, withdrew from the control panel, parting for von Braun who made a stiff march forward, halting at the console with a sharp CLICK of his heels, all the while fixing the malfunctioning mechanism with his steely gaze. He then bent slowly at the waist until his eyes were level with the clockworks. Then, (in what some later claimed was a parody of his already pronounced German accent), Dr. von Braun, with a soft, slow, yet unmistakably MENACING tone, addressed the offending timepiece: "You DO know ...don't you? Ve haf vays of making you TOCK!"

@tristanband4003

5 жыл бұрын

Doesn't really sound like him...he was very, very cagey about the past and I imagine it was just something most were smart enough to not bring up.

@timsullivan4566

5 жыл бұрын

@@tristanband4003 - You are of course right to doubt the authenticity of the story. Truth is - I made totally made it up. It started out as a kind of shaggy-dog style story to lower the reader's guard to facilitate an ambush with a shamelessly juvenile, stereotype-reliant joke. Somewhere along the way I must've decided to have it both ways and so started crafting it to sound a TINY bit credible even AFTER the "pun"-ishment had been delivered. Sorry - couldn't help it. ;-)

@timsullivan4566

5 жыл бұрын

@Kali Southpaw True - explained in my rep;y above to Tristan Band.

@brainwashingdetergent4322

5 жыл бұрын

Great one!!!

@xCorvus7x

5 жыл бұрын

Damned be you for using your wit to clog my mind. Really, nice one XD

Seems like a great opportunity to show the value of mini satellites. Send a few with thrusters and navigation systems to attach to the wayward satellite and push it into place.

The electron configuration surrounding cesium atoms is slightly deformed/ prolates from a different altitude within a gravitational potential gradient elongates the electron configuration… effectively acting like a longer pendulum swing which records a longer second compared to another clock without a deformed/ prolated electron configuration. This is known.

One flaw: there is no "gravitational part" that is distinguishable from the "velocity part". The math works not because the gravitational part can be separated out, it works because the gravitational part (i.e., the whole of general relativity) accounts for all of the effects due to gravity and velocity both. If you try to do the math separately and combine the results, you'll get the wrong answer, because you double-count the velocity effect. A good example is how to calculate the speed of a clock at the north pole at sea level (closer to earth's center, and no translational velocity) vs the speed of a clock at the equator at sea level (further from the center of the earth, and moving faster). If you do the math separately, you get the result that clock speeds are different. They aren't different. The general relativistic solution is that they are on an equipotential surface (sea level at both locations!) and therefore tick at the exact same rate.

@Pukkeh

5 жыл бұрын

I'm pretty sure that gravitational time dilation and (special relativistic) time dilation due to relative motion are separable and additive effects, for a first order approximation (in weak gravity fields and for non-relativistic motion). The separation may not be possible for an exact calculation but this is rarely needed in practice in weak gravity fields like the Earth's. Also, interestingly, the corrections due to the two effects are of the same order of magnitude for typical non-relativistic motion on the surface of the Earth, such as throwing a tennis ball (with a clock on it because why not), so you need to take both effects into account. I haven't done the math for orbits but I would guess the two effects still result in comparable corrections and both need to be taken into account.

@kandysman86

5 жыл бұрын

@@Pukkeh the math is wrong. It's completely wrong on it's face.

@Pukkeh

5 жыл бұрын

@@kandysman86 Thanks for that constructive and well supported argument.

@uumlau

5 жыл бұрын

@@Pukkeh For a first-order approximation, yes. To verify general relativity to the precision they were, they weren't doing first order approximations. Remember, the radiation of the sun was enough to affect their calculations. Also, yes, the corrections due to the two effects are of the same order of magnitude, but you'll get a wrong answer for any equipotential surface, because they need to be equal, not within an equal order of magnitude. My main point is that it isn't like separating out x and y motion in a typical dynamics problem, where you can have an equation in x and an equation in y and they're completely independent of each other. For general relativity, the velocity and gravitational effects are interdependent, not independent, strictly speaking.

@kandysman86

5 жыл бұрын

@@Pukkeh it doesn't matter how much empircle evidence proves the nonsense. It is a cult now. No matter how many times you prove you can see the emperor's penise, they just come up with some extra mathamagics to convince you that it's just a 2d line segment.

0:34 when your teacher starts a lecture and you are already bored

@starrysky1588

5 жыл бұрын

😂😂😂

I just watched a video on Irish dancing (not something I knew much about) and now this fantastic celebration of science, both make me feel like my heart could burst with how awesome humans can be. The internet is fkn fantastic 👌🏻

I wish he would do video about Gravity Probe B, the most insanely engineered space mission ever. The 'perfect spheres' he talks about in his spinning black hole video are actually only #3 and #4 of most perfect spheres ever made - #1 and #2 (as well as the previous #3 and #4) were made for Gravity Probe B. Not only that, its experiment was contained in a superfluid helium dewar, it used multiple types of superconducting materials, "superconducting quantum interference detectors" or SQUIDs and most uniquely, it actually used the helium boil-off as propellant to keep the satellite "drag-free", i.e. it kept the spheres floating freely inside the spacecraft by constantly correcting the spacecraft's position.

And then the ghost of Einstein helped to prove his own theory. THE END.

*Merry Christmas to everyone!!!* _May this Christmas bring happiness in ur life_

@tuffyb8375

5 жыл бұрын

You too !!!! Happy 2019

@rumourplays

5 жыл бұрын

@@tuffyb8375 thankyou! I wish I would get enough Subscribers this new year! And I can continue my hobby! :)

@rumourplays

5 жыл бұрын

@DBXD I am not Christian ! However I love to celebrate this wonderful festival! But along I continue my Religion too! That is Sikhism!

@rumourplays

5 жыл бұрын

@DBXD I believe in all god! My religion teaches me to stay in same religion and worship! It's both same!

@rumourplays

5 жыл бұрын

Believe in almighty one God! The god of all!

Overwhelming. You have, however, exposed two, for now, flaws in my thinking, while trying to grasp this. So, many thanks for that! I’m really struggling to verbalize them, so please forgive my simplistic attempts. First, if I drop a mechanical timepiece into, say, molasses, then it would slow down but that doesn’t mean that time itself has slowed down. Second, how can one calibrate the most accurate timepiece in the world and then how to verify it is indeed working? Thanks again for shaking my brain!

Your Channel Is The Best!

Some House of Cards soundtrack from drama effects. LOL :D :D :D

@veritasium

5 жыл бұрын

I thought the track sounded like that, which is why I used it!

@Q_QQ_Q

5 жыл бұрын

lol true .

1:56 "When we saw that this accident happened, we were really happy about it, of course." *_perfect opportunity to test something they've wanted to for a long time_* Yeah, sure... "Accident..."

@TroublesomeOwl

2 жыл бұрын

EXACTLY what i was thinking... lol

Hey Derek, I love science and I'm always seeking to learn more about the universe around us. I love your videos, as they provide thorough and complex explanations while remaining accessible to people like me who want to learn. So I have a question for you, or any viewers here who can help me answer this question. People often talk about space-time, and how things can warp it. My question is this? Can you warp space without warping time, or visa-versa? Or are space and time so interconnected that they are inseparable? I understand the effects that general relativity have on the universe, but I don't think I really understand space-time, what it is, and the exact properties it has. So in some sense, I guess you could say I don't understand it at all. I've tried to find answers on the internet, but I can't find a well-worded explanation to my question. I can't think of anyone better to help me with this question, and I would really appreciate it if you or anyone here could help me out. As always, great video!

@cloudpoint0

5 жыл бұрын

You will get a lot of arguments about any answer to your question. My understanding is it is not space and time that are being warped but you can interpret it that way. It’s really the gravitational fields through space that are being warped, that is the coordinates associated with the fields change, which in turn give different perspectives on surrounding space and time. If you travel mostly through time and very slowly through space, you will really only see time as warping. If you travel through space and not through time (like a photon), you will see space as warping. Or you will see some blend of the two at relativistic velocities (like near a black hole). It’s a perspective issue that is difficult to grasp so people usually just express it in simpler geometric terms.

@Pukkeh

5 жыл бұрын

I think to really understand what spacetime is and how it is affected by matter/energy, you need to learn some general relativity. Sure, a rigorous understanding will require you to learn some math and might take more time than you are willing to spend, but I feel like it is difficult to explain in words what you are trying to understand, without at least introducing some terminology. I think reading through an introductory textbook is probably the best way to understand the fundamentals, or maybe there are video lectures out there that you can watch. Maybe this will help somewhat. Spacetime in general relativity is an abstract 4D object called a "manifold", and as far as Einstein's field equations governing general relativity are concerned, in general, there are no space or time components to it that we can uniquely identify. So it is natural to consider "space" and "time" as being intertwined. Einstein's equations describe how spacetime "curves" in the presence of matter/energy. This curvature is defined as a "tensor" on spacetime, which describes how much and in what way spacetime is curved at a given point. As far as I know, there is no unique definition of "space curvature" or "time curvature"; curvature is a property of spacetime (I suppose you could define individual space and time curvatures for a given coordinate system, but these will depend on the coordinate system you choose and I don't know if this is useful in practice). It determines the trajectories of bodies in this 4D space. Spacetime looks flat in a small enough neighborhood of one of its points (even in a gravitational field), much like how the surface of the Earth looks flat to us when we're standing on it. This means that individual observers like you and I can _locally_ define coordinate systems around us, where we can identify one temporal and three spatial components. This way, we can still measure the _spatial_ distance between two nearby points and the _time_ between two nearby events (these will still depend on your velocity, like in special relativity), so the individual meanings of "space" and "time" are not completely lost. However, the spatial or temporal separation of two _distant_ points of spacetime are not in general uniquely defined.

hello sir, is there a way you can try this experiment again by comparing two clocks one stationary in earth and the other you put to a car racer or bring it to a plane and after comoare it to the one which is in stationary if there will be no changes.

I don't get it. As you mentioned, the fast speed actually speeds up time. How did they separate THAT from their measurement of the gravitational effect they were measuring? The video did not explain this at all.

@smalltime0

5 жыл бұрын

The faster speed would slow the clock relative to an earth-bound observer. The explanation is at the start, that effect is already widely documented (from all the communication and GPS satellites in circular orbits), and so it is relatively easy to account for. There are (as far as I am aware anyway) no atomic clocks on long term elliptical orbits, which is what they needed to remove the 'noise' from the clocks themselves in order to measure the effect of gravity.

@pathrender

5 жыл бұрын

They know how fast its moving so in turn they are able to compensate for how much it would change based on the speed. They can accurately predict how the speed will effect the clock, then you just subtract...