Neil deGrasse Tyson Explains the REAL Length of Day

Рет қаралды 777,760

Күн бұрын

A day is 24 hours, right? Right?!?! On this StarTalk explainer, Neil deGrasse Tyson and comic co-host Chuck Nice investigate the length of a day.
To start, Neil explains why a “sidereal day” is 23 hours, 56 minutes, and 4 seconds and a “solar day” is, on average, 24 hours. You’ll learn why Earth’s orbit around the sun impacts how we measure the length of the day. Should we re-define the length of a second? Discover more about leap seconds and how we decide when to add them to the calendar.
Find out more about atomic clocks and sun dials. Neil explains why the Earth is slowing down and why the Moon is spiraling away from us. We also discuss how tides serve as a counter-balance to the Earth’s rotation. All that, plus, we explore the many things that can impact Earth’s rotation including seasonal animal migrations, earthquakes, melting land glaciers, and more!
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About StarTalk:
Science meets pop culture on StarTalk! Astrophysicist & Hayden Planetarium director Neil deGrasse Tyson, his comic co-hosts, guest celebrities & scientists discuss astronomy, physics, and everything else about life in the universe. Keep Looking Up!
#StarTalk #NeildeGrasseTyson
0:00 - Introduction
0:54 - How Long Earth Takes To Rotate
3:33 - Earth’s Orbit Around The Sun
5:25 - The Most Accurate Timekeepers
7:33 - Earth Is Slowing Down
11:45 - What Increases The Speed Of Earth’s Rotation?
13:45 - Neil’s Diabolical Idea
14:44 - The REAL Length Of A Day
15:54 - Closing Notes

Пікірлер: 1 700

@STONEDECISION 3 жыл бұрын

I don’t know. The real length of day depends on who you spend it with.

@marsomatic639 3 жыл бұрын

Vsauce made a video on it. It is about how when you do interesting stuff the day seems shorter and when you have a boring day it seems long

@Yildirimzumra 3 жыл бұрын

Relativity 🙌🏻

@Tannertraversed 3 жыл бұрын

When you are enjoying life a day can fly by in what seems like a few hours, when you are feeling down, a day drags on for what feels like eternity. What is time anyways? How are you even understanding what I’m saying other than a program in your head? Time we do not know, and will never know.

@titsbeerbong4203 3 жыл бұрын

Mate right

@mammallama3522 3 жыл бұрын

Such poetry

@ImSkittzle 3 жыл бұрын

Just knowing there are experts who devote their lives to observing this information. Absolutely mind blowing, tremendous respect for scientists.

@davidwright5443 2 жыл бұрын

We're lucky to have Chuck. He adds the whole premise to the show. Science plus comedy. Plus he knows his stuff too.

@hasoonnine 8 ай бұрын

Comedians in general are very smart people……. well, atleast good ones are.

@positivevibrations6250 2 жыл бұрын

Chuck is the very best natural comic relief, kind-hearted, open-minded, genuine student to Neil's lessons. Keep it up, Chuck. :)

@CZinDC 3 жыл бұрын

Chuck is so lucky. He basically got paid to get an education from Dr. Tyson. Love the show!

@djsinghmaharashtr4685 3 жыл бұрын

haha yeah right

@lbthingsstuffmore9513 3 жыл бұрын

As we all!😉💜

@paytonpryor 3 жыл бұрын

Chuck pulls his weight. No one wants to give him credit.

@DoctorKolo 3 жыл бұрын

Not only that, he’s paid to be the class clown too🤣

@Chris-hx3om 3 жыл бұрын

@@paytonpryor Chuck is nobody's fool. Just listen to him, he gets it quite quickly...

@MSeaNP 3 жыл бұрын

I'm trying to get my 15-year-old niece in Nepal to watch these explainer videos. And despite having a beginner English vocabulary, she's extremely talented and now continues to be fascinated with what Tyson's scientific mind has to say since being introduced to A Space Time Odyssey. Let me tell you, not many are aware of his brilliant mind here in my country, and I'm glad I was able to inspire a young talent to learn from such a brilliant person. I hope even these explainer videos will be more simpler to understand for someone with a limited capabilities in the English language so that she can continue to be inspired. Thank you Neil.

@pheleekseh1391 2 жыл бұрын

Tyson is not always right

@dedpoptart 2 жыл бұрын

@@pheleekseh1391 generally more "correct" than you in videos. Just saying. Lmk when you have above a BSD

@catherinetoomey-flynn1624 2 жыл бұрын

You're a cool uncle 😎 I was introduced to StarTalk by my uncle and I'm so grateful to him because now I'm totally addicted.

@sbmcgonagle9671 Жыл бұрын

@@pheleekseh1391 No one I know is always right and I’m sure Tyson is no exception. However … there seems to be a faction of people in comment sections who dislike Tyson and try to take him down. I often hear comments such as “he’s not a good scientist.“ I have *never* seen support for their claims; examples are never given. To simply say, “Tyson is not always right,“ without an example given is utterly useless (especially since - unlike “he’s not a good scientist.“-there are probably many examples easily found (if you know what you’re talking about) where Tyson is incorrect (again, who is *always* right - everybody gets things wrong sometimes). Not providing support for your negative comment says more about you than Tyson and is a waste of everyone’s time.

@pheleekseh1391 Жыл бұрын

@@sbmcgonagle9671 how is it a negative comment, when u yourself just admitted no one you know is always right....?? Tyson said the universe is expanding.... That it's wrong.... Wrong because the universe has no boundaries, no shape, form or size Otherwise,. What is the universe expanding into??

@rupertwressell1742 3 жыл бұрын

2:50: "I've only just begun" sums up Neil perfectly 🤣

@mef9327 3 жыл бұрын

I’m old enough to remember when there was a phone number to call to get the time. “At the sound of the tone the time will be 6:30 and 24 seconds...beeep”

@PhillyJoe34 3 жыл бұрын

TI6-1212.

@kenglover8443 3 жыл бұрын

We got internet time for that now.

@Koyasi78 3 жыл бұрын

Moaning Mona was better

@jamesmon3713 3 жыл бұрын

I remember the number and actually called it the other day. It still works 9833211

@rasadams9034 3 жыл бұрын

@@kenglover8443 * we got cars , and cell phones and shiiiiiiiiiii now.

@LaibaStarXX 3 жыл бұрын

This is the real way everyone should be educated!😌

@jrey2347 3 жыл бұрын

I love these two... Chuck looks buzzing when he realises what Neil is saying ahaha.

@bipolarminddroppings 3 жыл бұрын

@@jrey2347 its like watching a child and parent. I know hes acting most of the time, because Ive heard Neil explain all these things to him before, many years ago on the original startalk. So either Chuck really is that dumb (you cant be that funny and be dumb) or hes playing the fool for the entertainment factor. He does it wonderfully, though.

@tysondog843 3 жыл бұрын

That is why this channel, and one's like this are so important. But you're right, the school systems need to learn from this model. When you engage minds, you can teach them.

@LaibaStarXX 3 жыл бұрын

@@tysondog843 I personally don’t like the idea of public schooling simply because you don’t learn important skills and plus it’s like every public school is like a prison. On the other hand, homeschooling is much better not only you can learn whatever you want but also you have more freedom. And this video is probably a fair example.

@tysondog843 3 жыл бұрын

@@LaibaStarXX Well, not all home schooling. That depends on the home. That's an issue on it's own. But, I get your point, this type of engagement while educating is seriously lacking in 99% of schools. And the freedom to question is definitely lacking in the majority of school systems, and more so today than ever. Universities are becoming the worst for this, questioning is somehow a crime now days sadly.

@dumaskhan 3 жыл бұрын

"You don't tell time, time tells you" George Carlin.

@Rattus-Norvegicus 3 жыл бұрын

George was the best.

@kaalen24 3 жыл бұрын

Ole Georgie. He was here only a moment ago.

@strandednseattle 3 жыл бұрын

One thing I love about Dr.Tyson is that he is true to self. The friendly and warm person he is on video is the same he is in person. I had the privilege of meeting him a few years back in Austin at the Long Center.

@romilpatel6957 3 жыл бұрын

Lucky guy! 👍🏻

@ArtKeshav 3 жыл бұрын

Chuck made a classic move at 02:16. Yawned with a closed mouth so that the teacher won't be able to catch you 😏.

@jamesongera2615 2 жыл бұрын

I come here to see if someone caught that🤣

@rarule1562 2 жыл бұрын

Hahahahahahhahaahha

@mariuszkochel1112 3 жыл бұрын

Neil: "The Earth is slowing down." Chuck: "Well... u know... it's kinda old." XD

@BobJP77 3 жыл бұрын

She still looks great to me. 🤪

@TheReaverOfDarkness 3 жыл бұрын

@@BobJP77 4 billion: lookin' youthful and fine! 5 billion: complete hag

@LeahTVdotcom 3 жыл бұрын

lol !

@OrcinusLaryngologist 2 жыл бұрын

That took me out. 🤣

@RX-8GT 2 жыл бұрын

🤣 underrated comment

@InsaneGamer95 3 жыл бұрын

I just saw chuck on a laundry detergent commercial! I was like “THATS CHUCK NICE!”

@narwhal_dust5458 3 жыл бұрын

Same

@gonderage 3 жыл бұрын

Yep, i heard it just today on soundcloud. His daughter confronts him and tells Chuck about how she went under the house and described it as magical, whereas Chuck tells her that she looks like she went into a swamp.

@blammela 3 жыл бұрын

Me TOO! I was so pumped for Chuck! Get that cheddar Chuck!

@jackiehopson8334 3 жыл бұрын

I said thats nice, Chuck

@stevejobs7353 3 жыл бұрын

Fav tide commercial.

@mettyowino6198 Жыл бұрын

I'm from Kenya and l like Neil degrease passion for science .I'm on my information technology degree and l want to devote my life to what I do just like Neil.

@raheemh.9891 Жыл бұрын

Be like you

@thereviewguy5598 Жыл бұрын

So glad I found this channel and subscribed. I miss science class 5th grade. Was a blast.

@kayanims 3 жыл бұрын

This actually makes sense. I always wandered why we needed to reset analog clocks in the past. I always thought it was a problem with the batteries

@MakeLifeExtraordinary 3 жыл бұрын

Neil, , I could have a never ending conversation with you. Thank you for everything you do.

@magellancharteringsolution5288 2 жыл бұрын

Great video as usual. Please make a video describing all earth’s movements and their cycles (incl. rotation, revolution, precession, Nutation, around barycenter sun/moon etc). Thanks.

@Jager-er4vc 3 жыл бұрын

Neil: “I’m gonna talk about Earth” Chuck: “I like that place.” Me: “Me too.” (Love me some StarTalk!)

@JustinWillisDevil240Z 3 жыл бұрын

I don't think Chuck gets enough credit. He is the perfect foil for Neil.

@missbee1427 3 жыл бұрын

Exactly 👏🏻

@BisTLeiS 3 жыл бұрын

100%

@MrLee43 3 жыл бұрын

Agreed

@whereuwannabe7796 3 жыл бұрын

Yea I remember they briefly tried Godfrey and it didn't work as well.

@b4ph0m3tdk9 2 жыл бұрын

Chuck got a fine purpose in this.

@cdnarmymedic 3 жыл бұрын

Chuck: "You brought an atomic clock to a dinner party?" Nah Chuck, there's an app for that.

@chrishazelwood9548 3 жыл бұрын

Atomic clocks can be very very small these day... Like I bet you aren't typing this comment note from a large UNIVAC computer, Right? :)

@brian9731 3 жыл бұрын

@@chrishazelwood9548 - but there are other factors such as the speed of transmission of the internet signal or other medium. So you need an actual atomic clock right where you are.

@leonlaf9929 3 жыл бұрын

Knowing that the leap second would happen that evening, I'm sure Neil (or if you prefer 'Dr. Tyson'), was prepared in advance, maybe even setting up this dinner to take place when the leap second was to pass. As you know, Neil is no bodies fool!

@MegaSkills9 3 жыл бұрын

This is a welcome video (and interesting) about a day on Earth. I watch your Tik Tok short videos every day and saw you just did one on this. I was hoping you would go into more detail on You tube. Thanks. I am one of your fans and frequent commenters on Tik Tok (Under a different name.) I help to answer a lot of the follow up science questions you get. Keep up the great informative videos. How can anyone not love science?

@mrburn6119 3 жыл бұрын

Informative video? FAILS to mention one extra day every 4 years. IERS, how far out are we from 'true' time? What happens when 2 atomic clocks are set and one flies around the world? Why if earth is slowing down - did 2020 have 28 of the shortest days since records began (1960's), and why does the sun affect our length of day (as known about by US navy since 1957, and hence why monitoring began)

@williamlubak4490 2 жыл бұрын

The combination of Neil and Chuck is magic.

@Freefire-ee4cb Жыл бұрын

It is not. Don't ever mix wonderful informative science with silly talking. My point of view

@vanshamb Жыл бұрын

@@Freefire-ee4cb And i don't like it.

@curtisthomas2670 Жыл бұрын

He's the comic foil to NDT's straight guy. Been a working formula for ages

@e-money5085 8 ай бұрын

They're so funny together. I feel like I could smoke a joint with these guys and just talk about space

@ejmtv3 3 жыл бұрын

I really love it when Chuck learns something you. He's like the representation of us watching so NDT can see our reactions through Chuck

@sudipbhakta507 3 жыл бұрын

Here it's 1:47 AM in India, listening to startalk as usual.. You guys are awesome..

@58s- Жыл бұрын

Great channel...never reget watching....never expect to watch for long...always watch to end

@jimclark6883 3 жыл бұрын

I just Enjoy the banter between Neil & Chuck so much in these videos!

@user-ym1vo7ql8n Жыл бұрын

I can't imagine how hard it is to find a guy that understands these very unorthodox topics and explain then very simply and a guy who isn't trying to steal the show or act smart. But is genuinely interested and ads character to the show. Absolutely brilliant but I have never expected less from dr.Tyson

@AshleySmith-sb3zb 3 жыл бұрын

If it hadn't been for your video today ....I just want to let U two gentlemen know how important and vital your insights have been for myself....🤗🕉🤓

@chronosoul1837 3 жыл бұрын

lol The "Hold me back!" thing is so true.

@laszloliedloff7231 2 жыл бұрын

Mr.Chuck , Dr.Tyson.I love you guys! Swear you two are making my day's easier ,keep it up!

@shaytepes7351 3 жыл бұрын

After watching your channel for an extended period of time, I find myself saying to others "but actually....". I'm now a blast at parties, thanks for that.

@vid2ification 3 жыл бұрын

No need to fabricate events you don't attend.

@shaytepes7351 3 жыл бұрын

Perhaps. But actually, projection can be a horrible thing.

@vid2ification 3 жыл бұрын

@@shaytepes7351 🤦

@pt-yt8322 3 жыл бұрын

@@shaytepes7351 lol nice

@twonumber22 3 жыл бұрын

what's a "party" is that from the before times

@con_el_maestro3544 3 жыл бұрын

I love how Chuck always has his hairstyle on point💎

@MultiWhit3 3 жыл бұрын

Thank you so much for answering my questions!!!

@thabrand4locos285 2 жыл бұрын

I like ur talkative explanations about everything.

@paulaguaraldi8990 3 жыл бұрын

Absolutely love this show. Huge fan. Chuck is so cute. You too Neil, and so enthused about explaining all this stuff! So entertaining, funny, and oh, educational...

@grilledfreakingcheese9209 3 жыл бұрын

Neil: there aren’t twenty four hours in a day. Math problem writers : *intense sweating *

@corazoncubano5372 3 жыл бұрын

😁😁😁😁

@Paislywalls4767 Жыл бұрын

Love your talks! Get sooo tired of the things it seems most people want to talk about these days and Here you 2 are!! So refreshing. Mr. Tyson brought up skaters rotation: likening to earth's rotation .. once viewed a skating competition on the spring equinox and Everyone was doing Poorly. It had me wondering if that time of the year was the reason? An Asian tradition of balancing an egg for luck on this day brought the question to mind (which I have done every year since learning this) yet I have got one to balance on other days also, so now I think if it as more a ol wives tale... just wondering... throwing that question out there. Have a great day all!

@ProfRonconi 3 жыл бұрын

What a delightful and educational show! Keep it up.

@elpred0 3 жыл бұрын

I love every time that Chuck gets Neil and makes him drop an incontrolable laugh. "You know.. it's kinda old" xDD

@jonnyalmstrom1805 3 жыл бұрын

"Lets ignite some jet engines...... I did some calculations...... no !!!! " lol lol lol

@dmanparazitu 3 жыл бұрын

i woudlve been surprised if he said he didnt did some calculation

@ScottMatthews316 3 жыл бұрын

Futurama did this in an episode to try and cool the earth and stop the icecaps melting. Neil must have seen or heard of this!

@matthewlofton8465 3 жыл бұрын

Jet engines would not work at all. Considering ONLY current technologies (at least as of July 11, 2019) and ONLY considering the engines themselves (not the infrastructure to support them), we would have to completely abandon a full hemisphere and blanket it wall-to-wall with SpaceX Raptor engines and fire them all non-stop for an entire 15 years to move Earth out of the Sun's grasp. Fuel will be a major concern, compounding the already unprecedented natural disaster that would result from negating Earth's rotation. If we delved into science-fiction concepts, the Chinese put out a show called The Wandering Earth wherein engineers created nuclear-fusion engines that were larger than Mt. Everest. At similar outputs with our "real" scifi fusion engines, we would have to use up 99.98% of the Earth's mass, so after escaping the fiery death of red-giant expansion we'd be living on a large planet-killing asteroid. Credit: Kyle Hill in a July 11, 2019 episode of Because Science (Kyle has since moved to his own Kyle Hill youtube channel)

@chriscail20gmail 3 жыл бұрын

This is the greatest science show out there right now. What I would give for an afternoon with Dr. Tyson!!!! My hero!!!

@deancyrus1 10 ай бұрын

This combo of funny and smart is excellent. I'm coming away with so much knowledge. Thank you ❤ i think it works as well as it does because you two come across as genuine friends. Thanks for all your hard work.

@dackjaniels4480 3 жыл бұрын

Dr. Tyson's videos taught me more about science in an hour than an entire year in school..

@beastmode2_21gaming3 3 жыл бұрын

Love these videos!

@central8448 Жыл бұрын

Best interview of all time. I’ve learned so much and My mind is blown away.

@robboyle18 10 ай бұрын

OMG, these two guys are amazing. Every episode is so thought-provoking. It makes learning science and astronomy fun ♥.

@TheLadiGigi 3 жыл бұрын

I'm gonna blame the tides on why I'm slowing down as I age. It's not my fault. Thanks, Chuck!!!

@steve-o6413 3 жыл бұрын

Brings new meaning to the phase "The tides are changing"...

@ZeeshanMuhammadX 3 жыл бұрын

Chuck's eyes make him look like he's blazed out of his head lol

@Manaflux02 2 жыл бұрын

Just chuck? Lol - my eyes look like that rn too lol 😎💨

@austinmeuret40 3 жыл бұрын

Is it just me but half of the videos Chuck seems blazed. And I know when you are blazed talking science is great. That's what makes the show even better. Gives it that extra touch. Love the show yall keep up #blazed

@hosseinpourakbar9564 Жыл бұрын

I love the way you debunk my understandings of universe. I appreciate it 👍🏻. Then I more feel that I do know nothing and I am thankful of that

@randomtask9029 3 жыл бұрын

Is it true that the Japanese 2011 Tohuko earthquake caused a change in the tilt of the Earth's rotational axis? If so did it alter things time-wise?

@rickkwitkoski1976 3 жыл бұрын

yes but not so much to make much difference

@MichaelClark-uw7ex 3 жыл бұрын

Yes but it was something like a few thousandths of a second.

@mrburn6119 3 жыл бұрын

was it the earthquake that caused the change? or the cause of the earthquake that caused the earthquake AND the change?

@rudhraveena2638 3 жыл бұрын

7:22 "when you do this" Ad pops up: get a 50% offer and buy a pizza

@tomking2613 3 жыл бұрын

Neil blows my mind everyday.. im not a patron member, but id love to know what blows Neils' mind as well

@EdTube444 3 жыл бұрын

The movement of that mass from the poles to the equator could also change the way the crust moves in relation to the core like moving a wheel weight around on your tire.

@12jswilson 3 жыл бұрын

Hearing Chuck and Neil talk about stuff makes my day.

@phd1313 3 жыл бұрын

4:27 me when listening to Neil just before going to sleep

@ikitclaw7146 3 жыл бұрын

its so hard to sleep after star talk, my mind races lol

@marcs-mc 2 жыл бұрын

I would love the subtitles!

@davidgutnik Жыл бұрын

Neil, I love all your videos! The way you can explain a complex subject in an understandable way is remarkable. There's a video I'd like, I don't even know if you'll get this message, but here goes. When you have a gap between two wires and increase voltage you get a spark. Because the voltage eventually jumps the gap of air between. Water has a lower resistance than air, therefore less voltage to jump the gap. But what happens in space? There is no medium to conduct the electricity, therefore with infinite voltage would there never be a spark? Does space have a "resistance"? If there a value like (for every inch of gap there is a 1000 ohm resistance) If there is.... What is the medium the electricity is traveling through?

@barnardthomas1411 3 жыл бұрын

"I like that place" Nice lol Best quote ever.

@stevehammond 3 жыл бұрын

I love all this stuff but when I try to explain it to other people they look at me strange and roll their eyes 🤪

@marcelamejia696 3 жыл бұрын

Who adds the second? This is amazing!

@davidmehling4310 Жыл бұрын

The difference between solar noon and clock noon (standard time) is a function of longitude to the tune of four minutes per degree. I live at 83 degrees west and Eastern time is based on 75 west, so the average solar noon for me is 12:32 standard time

@DasBreen 3 жыл бұрын

10:22 So if they add a leap second on Dec 31st, do they account for it when they're counting down for the New Year?

@steve-o6413 3 жыл бұрын

No, but it changes the Speed of light in a Lightyear...

@booperduper8816 3 жыл бұрын

3...2...1... uhh 1 again.... Happy new year🥳

@NJovceski 3 жыл бұрын

didn't he say it gets added at the last minute of the day in england somewhere, so his time its like 7pm. So the only new years that gets the extra second is that place, 3,2,1,1 Happy New Year, lols. I'd like to be there for that party!

@carultch 3 жыл бұрын

@@NJovceski It's the GMT time zone where it happens at midnight, and in that time zone, it is assigned to the original year, where the time is 11:59:60 pm on Dec 31, just after 11:59:59 pm, and just before 12:00:00 am on the following New Years Day. It isn't just England. It also happens in the entire British Isles, Portugal and a lot of West Africa. In GMT+ time zones, it happens in the next year, and in GMT- time zones, it happens in the original year.

@KnighteMinistriez 3 жыл бұрын

Nice that science can do this. Y'know what makes my day, earth rotating.

@eharvey5058 Жыл бұрын

I love the way you explain this stuff!

@tonydezurik6863 9 ай бұрын

Was it WWV in Ft Collins, CO? I used to tune in on SW to set my watch back in the 70's :)

@MakeAppswithDanny 3 жыл бұрын

Great video! Will the earth eventually stop? Or become tidally locked with the Sun? Will the Moon eventually be so far away that it messes up our eco system? When will these things happen and what will be the consequences? Would love to see a follow up on this!

@farmergiles1065 Жыл бұрын

NDT said the Moon moves away from Earth about 2 inches a year. That's a foot in 6 years, a mile in 31,680 years, double its current distance in about 7.5 billion years. Receding distance will gradually diminish tidal effects, slowing the Moon's movement, so doubling its current distance should take quite a bit longer - maybe 10-12 billion years. Geology tells us the Earth has slowed its rotation by about an hour a day over the past 3.5 billion years, but the rate of slowing will also slow down. So say we'd have something like days of 26 to 27 hours in 10-12 billion years. Still far from tidally locked. And Earth would need to lock on the sun anyway, not on the moon, which wouldn't happen as long as the Moon was close enough to Earth to tweak the Sun's influences sufficiently. Long before then, the sun should have expanded into its next phase, incinerating both Moon and Earth, so that will mess up our ecosystem before the tidal forces will.

@carultch Жыл бұрын

If allowed to continue to this point, the ultimate fate would be for the Earth and Moon to become tidally locked to each other, with a day being about as long as two of our current months. This will never happen in the entire future of the solar system, because it will take longer than the sun is predicted to last, for it to happen. The sun will expand and engulf the Earth and Moon before this can happen, and it will make Mars the "new Mercury".

@monzy2 3 жыл бұрын

I love how at 4:30 Chuck is feeling a yawn come on, but tries his best to hide it.

@AlwaysWrenchin 3 жыл бұрын

Does it look more awkward to watch someone yawn or to watch someone fight to hold it back? Haha

@wevsitekilo9072 3 жыл бұрын

Same at 2:15 lol!

@Bendigo1 3 жыл бұрын

Seeing it made me yawn.

@Zerolink30 2 жыл бұрын

If i would off had a science teacher with the enthusiasm and knowledge Neil puts into an episode of Star Talk, i would've paid a lot more attention in school

@shadoudirges 3 жыл бұрын

Turns out time, or more accurately the keeping of time, is hard if you are going for accuracy. Very fascinating stuff.

@twonumber22 3 жыл бұрын

From the time I wake up until the next time I wake up. That's a day in my book. 😆

@berosi 3 жыл бұрын

So much Knowledge in just 17 minutes! Thank you Neil...

@pitvargas2414 3 жыл бұрын

Thanks for teaching us such interesting things

@novavolex5568 3 жыл бұрын

I love how the title is on something that you will think it's very boring than Neil starts to talk about it and 5 minutes later I'm mindblowned.

@666tonsofsquirrels 3 жыл бұрын

I’m picturing Neil with a pulp fiction briefcase, containing The atomic clock.

@carultch 3 жыл бұрын

What the briefcase really contained: two batteries and a lightbulb.

@lydiavazquez7749 3 жыл бұрын

Put him the mayo conversation.

@ronaldhotboy 3 жыл бұрын

The chemistry between the two of you is freaking amazing! If I had to dwindle down my subscriptions to one channel oh, this one will be my choice by far

@tonyb3203 3 жыл бұрын

Very few things make me hit the notification bell. The promise of a leap second special made me hit the notification bell.

@bigwinboard 3 жыл бұрын

I love this. Great conversation guys!

@captainwaa7274 3 жыл бұрын

Niel: the earth is slowing down Me: o_o

@Metrodetroitmommy1 3 жыл бұрын

Thank you so much for this video. I was talking about the phases of the moon with my kids today, and I realized that 360 degree rotation could NOT be exactly 24 hours every day. Thank you for explaining it in detail.

@tehpw7574 3 жыл бұрын

13:17 This was something i was curious about for a long time: How much affect has happened to the Earth just from all the material we used in space flight (from the consumption of propellants to everything we made and have launched into space (with little or no chance of return, like our probes)?

@nickaryan100 2 жыл бұрын

thanks for all your infos

@paladinsmith7050 3 жыл бұрын

Fun Fact: Earth's 28 fastest days on record since 1960 all occurred in 2020

@Damendraify 3 жыл бұрын

Yup but still felt the longest!! 🤭

@divjotsinghmanchanda6675 3 жыл бұрын

@@Damendraify It's the other way round (shortest), but I get your feeling😂

@GP-qb9hi 3 жыл бұрын

Why?

@sandal_thong8631 3 жыл бұрын

I heard that this past year it was speeding up so they might need to take away a second. He got his ice skater analogy wrong: melting ice on the poles becoming equatorial water is like bringing in the arms to speed up.

@GP-qb9hi 3 жыл бұрын

@@sandal_thong8631 your arms out which slows you down. And that's what he said, no?

@MarioDallaRiva 3 жыл бұрын

Time stands still when I watch these 'splainers!! How do I factor that into my watch?!?

@chriswhiteiii 2 жыл бұрын

Sidereal calendar here I come. Thx again. ✨

@sgolemanski 3 жыл бұрын

Make one for how GPS works

@scottlewis4906 3 жыл бұрын

Doesn’t the mass of earth changing as it collects “space stuff” like tons of tiny meteors cause it to slow down as well?

@autohmae 3 жыл бұрын

Not enough and not big enough is my guess.

@shadoudirges 3 жыл бұрын

Technically that is correct but it's like shooting a spitwad on to a moving semi truck every few miles, the effect is negligible.

@mayanksharma8518 3 жыл бұрын

7 min in: What if the frequency of the Cs electron transitions was actually speeding up?

@Chris-hx3om 3 жыл бұрын

🤦‍♂

@mayanksharma8518 3 жыл бұрын

All I'm saying is that frequency itself is inversely proportional to time, which is measured in seconds.

@Chris-hx3om 3 жыл бұрын

@@mayanksharma8518 You're putting cart before horse. The transition of the Cs is what defines the second. And being an atomic based event, it's time is fixed. Which is why they use it as the standard to define the time period.

@mayanksharma8518 3 жыл бұрын

What if the simulation, that is this universe, is now being run on a faster processor with higher clock speed?

@mayanksharma8518 3 жыл бұрын

@@Chris-hx3om What if the electrons are also actually speeding up? I would assume that would mean that their radius from the nucleus is also decreasing. Has anyone even bothered to check that!?

@dexterfurman9118 Жыл бұрын

That was amazing! Thank you for that explanation.

@pureevil4674 3 жыл бұрын

13:50 something similar like this has been done in the movie 'wondering earth'

@rickyaulakh 3 жыл бұрын

One day in my life I want to meet you guys 🤝

@iamgroot4080 3 жыл бұрын

Just pay them money. This is how the things are

@Dr.RichardBanks 3 жыл бұрын

*Girl* _Same_

@vnth2186 3 жыл бұрын

*"The Earth is old. I'm just sayin"* -Chuck Nice, 2021

@feelingzhakkaas 3 жыл бұрын

very interesting information. HOW WAS TIME MEASURED ACCURATELY IN THE ERA OF KEPLER, GALLILIO AND OLD TIMERS ?

@naenaegigiscooking9690 3 жыл бұрын

I WISH I'D HAD A SCIENCE TEACHER LIKE DR NEIL!

@GhettoHuerta 3 жыл бұрын

Is that where the saying came from? 'Not on my watch'??!!??

@sk8rlt 3 жыл бұрын

This whole video I was waiting for him to explain the leap day every 4 years and he never did...

@genostellar 3 жыл бұрын

Me too, though he doesn't really need to since it's obvious to most people, I suppose. Still, would have been fun.

@Lupita311 3 жыл бұрын

He explained it a year ago or so, he repeated it to Joe Rogan when he said why he called the calendar After Christ or AC.

@doyouspeakponglish 3 жыл бұрын

4:36 'it is changing continually' Neil - I would say continuously :)

@dutchman7623 2 жыл бұрын

I am only just begun! Epic!