Neil deGrasse Tyson Explains “The Sunset Illusion”

Abone ol 2,3 Mn

görünümler 591 B

99% 21 000 1

In this StarTalk Radio explainer video, Neil deGrasse Tyson and comic co-host Chuck Nice are exploring what’s really going on when you watch those beautiful sunrises and sunsets.
To start, you’ll get a refresher on how the days of the week were named. Then, we discuss our pre-Copernican vocabulary to describe what’s going on in the sky. You’ll learn how refraction and our atmosphere impact sunrise and sunset. Neil tells us why, when you think you’re watching the sunset or sunrise, the sun is already past the point you're seeing. Neil also tells us how telescopes can calculate refractive effects when looking at stars.
Then, you’ll learn why the equinox is not actually the day where there’s an equal amount of night and day. Lastly, find out how light would interact with Earth if it were a black hole. All that, plus, Neil and Chuck discuss other “ghosts of the sky.”
Support us on Patreon: www.patreon.com/startalkradio
Subscribe to StarTalk: trvid.com...
Follow StarTalk:
Twitter: startalkradio
Facebook: StarTalk
Instagram: startalkradio
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

Bilim ve Teknoloji

katma

27 Tem 2020

Paylaş:

Herunterladen:

Yük bağlantısı.....

Ekle:

Çalma listem

Daha sonra izle

YORUMLAR : 1 992

Sw33t G4mer 2 yıl önce

Mom: Time to wake up, the sun has risen. Me: Just wait five more minutes.

Nirav Shah 2 yıl önce

Bestt

HossSwayerpr 2 yıl önce

So that's where that phrase came from 😄

Aljoscha Long 2 yıl önce

… until the sun has REALLY risen!

Dave Dee 2 yıl önce

Haha. That’s great!

Adolf kitler 2 yıl önce

Light takes approximately 8min to reach earth from sun so technically you're 3min late

Joe Dabo 9 aylar önce

I love the fact that Chuck is part of this show because he is the perfect proxy for the audience

Angus Davies 2 aylar önce

We're not all comedians, you know. Only about 74%.

Gordon Lennox Aylar önce

He sums up things very well

Brad Dawson 2 yıl önce

It's rare, and magical when you have 2 hosts with perfect chemistry. It makes or breaks a program. These guys have it. It's just as entertaining as it is educational. Doesn't get any better!

Anonymous Commenter 2 aylar önce

For the most part. Sometimes dude on the right makes some lame jokes, and sometimes I think neil is fake laughing.

m_ 2 aylar önce

@Anonymous Commenter same.... the other dude is cringe to me, & often seems I am alone. Well, glad I am not d:-)

Gottenhimfella Aylar önce

I would personally prefer less comic padding. The material is interesting enough not to need spicing up, so to me it's just distraction and dilution, especially the lamer moments. Largely I think the mindset "learning needs to be fun", when taken (as it often is) to excess, becomes a way of papering over the cracks in the common first-world situation where teachers lack the ability to render the actual subject matter sufficiently interesting, and kids have been pandered to by the "Must be Fun" brigade their entire life, to the point where they have little interest in the subject matter, even in those cases when it's *not* badly presented. And here we see the same methodology in use with adults. In very many ways, the American dream has become all about never having to grow up. The real problem in the first world (it seems to me; I promise I'm about to climb down off my box!) is that the kids don't have any visceral connection with their need to know, whereas many kids in the third world will do whatever it takes to get themselves to school, given half a chance. There are times when even mediocre teachers can do okay in some parts of the third world, as long as they don't actually get in the way of the kids arranging ways to learn stuff for themselves.

SkyRaider 2 aylar önce

One of the coolest things I have ever experienced, is watching the sun set 4 times in one evening. I was in my plane, watched the sun set started climbing hard, and the sun came back over the horizon, did it 3 times.

Dennis Haskens 21 gün önce

Thats awesome

Matthew White 2 yıl önce

Chuck, you are definitely the "yin" to Neil's "yang" I love star talk and you two have some next level synchronicity!!! science had been my guilty pleasure for the entirety of my adult life 🤣 thank you for all the content and knowledge 🙏🙏🙏 I truly appreciate your time,effort & energy👌#STARTALK4LIFE

Eliz Donovan Aylar önce

When you think you’re being entertained but then, realize that you’re being educated by a real live science person. Thank you both. ☘️🌝🌲

Andrew Edis 2 yıl önce

Chuck is such a great co host. Watching him absorb these words of wisdom is a joy to behold.

Juan Rojas-Carrasco 2 yıl önce

Flat Earth Data ermmmm... Curvature

Juan Rojas-Carrasco 2 yıl önce

Flat Earth Data at sea level, about 3 miles

Juan Rojas-Carrasco 2 yıl önce

Flat Earth Data Correct, they do not touch.

Nilguiri 2 yıl önce

Chuck is a nice guy and very funny.

AbigBlackcat 2 yıl önce

I cant help but feel that neil treats him like he knows nothing. Chuck knows a great deal.

Dena Dean 5 aylar önce

I love how he breaks everything down in such way that anyone can have a full conceptual understanding!❤❤❤

Slashburn69 Aylar önce

I absolutely love these videos.🥰 Keep up the great work you do and information you're providing to all of us

Jordan Lee 2 aylar önce

Wish I had him as a teacher!!! I could listen to him talk all day.

Twinkle Singh 2 yıl önce

“You are never actually looking at what you are looking it” that’s so true!!!! Star talk is so informative in an entertaining way love it ❤️

Bruce Roger Morgan 2 yıl önce

I'm just really discovering these videos, and they are awesome! Thank you, Neil and Chuck, I'm enjoying your videos immensely.

Romil Patel 2 yıl önce

I also discovered these quite late. Catchin up now ☺

AFineLineA Aylar önce

Totally agreed and same, just found them and glad to have. Eye opening even if some is known it is great to add more knowledge.

AFineLineA Aylar önce

@Romil Patel Same!!!

Alexzander Morgan 2 yıl önce

No matter how depressed I get, two minutes of Star Talk and I’m laughing.

ARCANE 2 yıl önce

its a great distraction

David C. 2 yıl önce

Yo guys, i just wanna say that u can overcome ur depression. U can do it guys.

Hip Grandmother 2 yıl önce

Tyson better keep Chuck employed because he makes me laugh all the time.

Donald Trump's 34 Indictments 2 yıl önce

Flat Earth Data this is how you tag......also, what objectional reality is the technology you use to promote your incredulity based on? (Quantum mechanics) To answer your leading question, and cut your undoubtedly parroted response that should likely follow, as insults and arguments from emotion seems to be all that the #FlatEarth "community" is capable of, the answer is HORIZON. No the word horizon is NOT derived from HORIZONTAL. Level is a word, like most words in the English language, have a different meaning based on context. To calculate gravity you use the formula M1*M2/r^2. Any ball that is ON 🌎, will have a gravity that would be negligible. If we shrunk Earth down to the size of a basketball, it would collapse into a singularity from the sheer mass, but all of Earth's water could fit into a tea cup. Pour a teacup worth of water on a ball, adhesion alone should hold it. You have been tricked by a snake oil salesman, I hope you can stop trolling science and actually learn from it. #TrollingFE

George Kastrinis 2 yıl önce

Possible one of the best moments in those videos, when Chuck fully grasps a concept and gets that excited! I love it

Bram B 2 yıl önce

I’d love to see an episode where Neil gives his thoughts on using the sun (UV and IR) to gain energy (electricity and heat)

Vincent Marquez 2 yıl önce

When he said you could be seeing the light that was there billions of years ago gave literal chills

silverstarvn 3 aylar önce

Love you guys, always interesting, entertaining, funny and educational. You're a perfect match for these explainers. I wish I knew you guys. Thanks

RWBHere 2 aylar önce

Tyson is a brilliant educator, who understands illustrations, timing, the use of gestures, vocal modulation, etc, as valuable aids to teaching. He's worth watching and listening to carefully for those fine qualities. Chuck makes a pretty good foil, reflecting the thoughts of a child who is learning from him. The humour doesn't quite translate internationally, but that doesn't matter so much, because Neil is busy teaching viewers and listeners in ways that they will remember the information. The two of you make a good team. Thanks for this video. It's the first one I've watched from this channel.🙂👍

AtlasNYC 2 yıl önce

I never liked Math in grade school. Never in high school. Somehow in my adult years I've grown to love and see just how COOL physics and Astro physics is lol

Ashu Singh 2 yıl önce

Exactly! I love science more when Neil teaches it.

Matthew O'Grady 2 yıl önce

I think two critical factors come into play. Firstly, a teacher who is interesting, engaged and genuinely enjoys teaching the content. Secondly, having a relevant topic or subject that you can relate the content to.

Rraviteja Mavr 2 yıl önce

Because they never teach what is math & why we need to learn instead they shove hundreds of formulas to solve seemingly illogical problems for everyday life with extreme logic of math.

PafMedic,Jan 2 yıl önce

Rraviteja Mavr ,You Have To Start Out With 2X2,Before Being Able To Calculate Anything...Whether Its The Curvature Of The Earth,Or How Much Oxygen Do I Need For My Pt,On What Flow,and At What Rate..Need To Learn Math 1st,And If Your Science Teacher Didnt Teach You That...Well Then,They Done It Wrong

scubthebub 2 yıl önce

Some may disagree, but math on its own can be dry and boring. But if you hang in there and grab the basics you can use that to unlock all of physics. The application of trigonometry is how you can figure out where the sun really is setting. I didn't get this until I took college physics and realized those fundamentals finally came to light into something that I found super interesting.

Darlene Bartos 2 aylar önce

Thanks! Always useful entertainment in the form of information. And for the range of all age level s. When I get enough of a certain subject or focus , I look for another episode.

South Point 2 yıl önce

These gentlemen are fun to watch and listen. So informative and funny.

AFineLineA Aylar önce

Totally agreed!!!

WasabiSniffer Yıl önce

I always love Chuck’s enthusiasm when he gets his mind blown

Neutrality 2 aylar önce

Mr.NDT is so great at explaining science to everyone! I’ve learned so much from him.🧠

thiagoene 2 yıl önce

Fantastic video as usual. Using the same principle of light from stars that reach us and could be gone for billions of years, it's worth mentioning that should our sun suddenly vanish, everything would look and feel absolutely normal around here for 8 minutes and 20 seconds, until we abruptly went into complete cold and darkness.

AFineLineA Aylar önce

Interesting, as well, thank you for posting!!!

Steven Pan 2 yıl önce

This is like my daily physics class.

Khusan Akramkhodjaev 2 yıl önce

If it's your physics class, it's awesome!!!

Addam Riley 2 yıl önce

This is only half of what the public knows about physics... matter isn’t what’s real... the real secret is between all matter. The space force knows... electromagnetic gravitics will make rockets redundant.. tbh they were redundant before they were created.

M.E Yıl önce

That I actually understand and enjoy!

timc333 2 aylar önce

Aww that's sad , to think , how very little you are being left with , and you probably think he gave you the cosmos to .

Karen Hindson 2 yıl önce

I love the humour. I think my father actually explained all of this when I was about 6 or 7 years old and also why it appears to be 12 hours the nearer to the equator you are and why sunsets are way longer the further north or south you are.

James Ely 2 yıl önce

Chuck lost me at "It's not all about you". I about lost my beverage on that one. Too funny.

Scifipala 2 yıl önce

Always very educational and entertaining. Thanks guys :)

AFineLineA Aylar önce

Facts!!!

Will Langford 2 yıl önce

On a need to know basis. I love it. In my field of work I am the same way. You teach what needs to be known and get more in depth the more people try to actually learn and show a willingness to learn.

Somit Karadbhajane 2 yıl önce

Neil is like the science teacher that I never had. I just love the way he gets excited while explaining things😍🤩

timc333 2 aylar önce

He is like that because he is not teaching you real science . If he didn't simply make up the science to suit the central governments agenda , he might have some credibility . If he taught you the science , he would be just as boring as Mr. Wizard without a Timmy ! Those old enough to remember Mr. Wizard only tuned in to see how far Timmy could push Mr. Wizard , and how mad Mr. Wizard would get too , it was grate . See Neil can't even copy Timmy right , his cohost simply agrees with every nonsensical thing that Neil says .

Harry Weasley 2 yıl önce

Man I love the chemistry between you two!

Shovi Handayani 2 yıl önce

Me too 😁

João Paulo Dias França 2 yıl önce

They have a lot of chemistry for a physics show.

Frank Sierra 2 yıl önce

That's more like Gravitas 😅

The OP Miner 2 yıl önce

Chuck literally called Neil “Babe” at the end.

Vikrant Tyagi 2 yıl önce

@The OP Miner Yess :D

Rob Bennett 2 yıl önce

There are 3 different sunrise and sunset times, astronomical, civil and physical (I think it’s physical). Thanks for another great video. BTW, Amateur Radio operators do EME communications by bouncing signals from Earth to the moon and back and can bounce the signals off the moon before the moon just peaks over the horizon due to refraction. Takes big antennas and lots of RF power as the moon scatters most of the signal.

BladesHooked Daniel 2 yıl önce

With you I've learned more through this pandemia than my years of high school, thanks!!

Central Alabama Unite 2 aylar önce

These videos are so intelligently choreographed to appear in my recommended videos list that all of your podcast helps me through each of my challenges

JanusAtTheGate 2 yıl önce

And we also love Chuck's learning enthusiasm. That would be our youth and kids.

Mazinblaster Zetto 2 yıl önce

I love how Neil just starts laughing before he even starts talking with Chuck.

William Anthony 2 yıl önce

You guys are a gift to humanity 💛

l2etranger 3 aylar önce

This is probably why there are so many schools of thought of astronomers using different references to determine dawn, dusk and other praying times, plus the provisions when to accomplish them. Thank you for making this video.

Dad Gaming 2 yıl önce

"When you wish upon a dead star. Makes no difference who you are." Chuck Nice to be back! One of the smartest comedian out there IMO. Neil is like the Book of Revelation.

Michael Easler 2 aylar önce

Dr. Tyson, can't wait to hear you explain the aberration to the ellipse. Great and informative video guys!

Adrian Ruzsicska 2 aylar önce

"Looking at long past history" usually consumes my thoughts whenever I gaze at the stars. I've also contemplated that if we could exceed the speed of light, we would progressively see and hear further into the past the longer we travelled. Perhaps time travel isn't so far away after all! :)

Raidersscm 2 aylar önce

Thanks Neil. I learned something new and laughed while doing it. You can’t beat that!

Figment _of_Eidolon 2 yıl önce

I love Chuck! He's the perfect co-host with NDT imo. Always love the episodes where he's present.

pamcake 2 yıl önce

I live for the moments when Neil gets distracted by his own rapid-fire brain and goes off on a random, totally-off-topic, tangent - like straws🤣

maxandhetty 2 aylar önce

Thank you for putting in words the concepts in my mind ❤

Dolphin Ride 2 aylar önce

This episode is one of my favorites! I really enjoy your videos!

Patrick Smith 2 yıl önce

Thank you for telling me something never learned in school i love learning this type of thing and you guys are great !

OdinIsNotTheSomeFather 2 aylar önce

Love you two! Making science fun!

kaspi 2 yıl önce

I love when Chuck's mind is blown. He's pretty intelligent himself if he can keep up with what Neil is putting down.

Kévin Kirst 2 yıl önce

I love Chuck's entusiasm! I feel the same way and it's nice to know I'm not the only one :)

Michael Langley 2 yıl önce

Just started A level physics. Thank you for bringing comedy to a subject I love.

AFineLineA Aylar önce

Great information!!! Never hurts to add to the knowledge base of individuals! Thanks for posting!!!

Wayne Cole 2 aylar önce

The hosts are completely symbiotic to the product. Perfectly matched for both, entertainment, and education. Also I love how Tyson clarifies - openly - a layman's perspective of Neil's explanations.

Blanco718 2 aylar önce

As funny as they are. Just their genuine laughs makes me laugh with them. Man I wish I could just sit with them at a bar and have a drink and talk

White Cat 2 yıl önce

Neil: Are you winning sun? Sun: "no dad refraction is lagging my light speed to reach human eyes"

Adrián 100889 2 yıl önce

This is the true sauce right here.

Virat Kohli 2 yıl önce

Best comment

Brendank Redbeard 2 yıl önce

This is the best thing I've seen all day

Ajtony 2 yıl önce

Perfect

XeLaNoiD 2 yıl önce

For the ones that like to know why he said 7 days of the week are named after the planets, you can see a great example in the french language Monday -> Lundi = Lune (in french, the name of the moon) Tuesday -> Mardi for Mars Wednesday -> Mercredi for Mercury Thursday -> Jeudi for Jupiter Friday -> Vendredi for Venus Saturday -> Samedi for Saturn (yeah it's better in english for that one) Sunday -> Dimanche for the sun but it's a bit more complicated... you have to think about the latin prefix Di (Dius) meaning day. (And again a bit more intuitive in english for that one too)

Dominique ___ 2 aylar önce

This is fascinating. I have a solar generator setup. It always turns on in the morning before I see the sun. Now I get why. Thanks!!! -- ALSO .. thanks for referencing my favorite poem ever!

My Lord 2 yıl önce

Love this...Neil brings out the kid-level curiosity in me.

Travis P 2 yıl önce

Neil has such a great sense of humor.

Renn Ho'aloha Loren Aylar önce

Chuck is such the perfect comedic foil for Neil's learned knowledge. And while I totally get Neil's explanations and need no filter, Chuck's irreverent absurdities are very entertaining. The two are the very definition of synergy. Definitely a most dynamic duo!

shivercanada 2 yıl önce

Chuck should be a lot more well known, he's really hilarious!

Terry Wood 2 aylar önce

Very cool! I wondered why Accuweather told me we'd have 12 hours of daylight on March 17th, instead of on the 20th. Thanks for solving this mystery for me!

Aim High Media Services 2 yıl önce

Chuck's reactions are what make this so awesome

Brian W 2 yıl önce

Another great teaching cast!! and love how you ended with the Moody blues poem. ok, so I need to know, at anytime in the day, does the sun speed up to make it real time in the sky? or is it always refracted about 5 minutes?

Dan Collins 3 aylar önce

Was born in Chicago. Tall buildings. Never saw a sunset. Moved to sparse suburbs at age 4, and started running down the street to get the sun which was "right down there!" What a dope I was, having missed it by 5 minutes. 🙂

brandon bennett 2 yıl önce

This morning me and my friends cycled through the country fields for sunrise, we was questioning why the sunrise appears the way it does, it’s so much easier when an astrophysicist explains :D

Tez 2 yıl önce

Amazing! Neil can you explain the sun rise and set locations on the earth's compass and how it changes when and where you are please?

rich1383yt Aylar önce

One revelation I had many years ago when looking at familiar constellations was that each of those stars can be at vastly different distances, from a few hundred light-years to millions. It’s easy to check using a phone app like Star Walk.

Mitchell Welch 2 aylar önce

Funnest way to learn right here! Everytime I watch I laugh and learn something new. Definitely must watch alllll these videos! This content could be taken directly into a classroom for kids to learn not only a body of knowledge but a fun way to communicate about science that generates positive emotions and genuine curiosity and intrigue. SHARE THIS CHANNEL!!!

Felicity Chevalier 2 yıl önce

This is precisely why I believe sunsets are the most mathematically beautiful thing in observable nature. Rainbows take two steps of refraction. Sunsets take one.

Beth Ruggles 2 aylar önce

I love that song. In the 70's radio, DJs didn't play that ending poem. Very sad for people who hadn't bought the vinyl record.

Hey What's up YouTube 2 yıl önce

Excellent service you and you're team delivery us all... on behalf of everyone sincerely thank you. MJJ

Brownsboy23 Aylar önce

So thankful this man speaks literally only truth. Refreshing to believe. Brings tears to my eyes. Who will my great grandsun be able to see this and cover this information after my passing? Hes a late bloomer.

ImmortalsGaming 2 yıl önce

Has anybody ever captured the moment on video or otherwise when a distant stars light stopped reaching us? It would be pretty crazy to just be looking up at the stars at night and see one turn off.

Roger Tulk 3 aylar önce

I'm just learning about refraction. It never occurred to me since I point my telescopes manually the stars may not actually be in the position I'm pointing at. Congratulations Neil you blew my mind again!

Liquidbraino 2 aylar önce

It's not just that they may not be in that position, they literally are not in that position. Proxima Centauri is 40,208,000,000,000 km away from our sun. That's the closest star but it still takes 4.35 years for that light to reach us and many stars are millions of light years away, some of the stars we see in the night sky might not even be there anymore or may have gone supernova (like the star Betelgeuse in the Orion constellation). It's long overdue for a massive explosion and it's too far from us to be harmful to us but when it does explode it's going to be spectacular, like those amazing space pictures you see of supernovas but right now we're in one of the most boring parts of our galactic neighborhood. When Betelgeuse explodes it will be the brightest object in the night sky; it could literally happen any day but then again it may have already happened but the light from that explosion will take 642.5 years to reach us.

Gottenhimfella Aylar önce

@Liquidbraino I don't know if they mentioned it here (because of all the comic padding, I lost patience with trying to skip through and find out) but the effect you mention is an additional reason why the sun is not where it seems to be, it's where it was about eight minutes ago. Which at sunset makes quite a difference, but is also means that the time of (say) meridian passage - what navigators call "local apparent noon" is not the time of ACTUAL meridian passage. However instead of applying a correction which would always be the same amount, it's far simpler for the tabulated positions of the "sun" to actual denote the position of the IMAGE of the sun.

Jay Dirt Yıl önce

The look in his eyes when he gets what Neil is saying. “ Magic “

Bisbo Nian 2 aylar önce

When I was in Undergraduate Pilot Training, my instructor in the T-37 aircraft liked to be the first one out the door in the morning, to create this visual illusion. We would go out to the acrobatics area, and he would tell me to do a loop. So I did, and the Sun came into view. Then we went over the top of the loop, and started down the backside, and the Sun would go down again. We could get about three iterations of this fun trick, and then move on to the rest of the lesson for the day. Thanks Derald.

Guy from the sky 2 yıl önce

You both are perfect combination of Wisdom and Fun

system2 2 aylar önce

The Spanish word 'arrebol' means 'the beautiful red glow of the clouds at sunset'. I think it's unique in that description amongst the languages.

sophia angelini Yıl önce

Neil is the most brilliant teacher of all time. Lord Nice is his little brother.

Kenneth Larsen 2 yıl önce

Love these explainer videos and the interaction between you two are amazing. I would very much very much like to hear about the Earth ‘not ellipse’ orbit Neil, but I cant just drop by you Office since i am i Denmark 😄

Ra Garcia 8 aylar önce

NDT is awesome it's always so entertaining listening to so many eloquent words just completely lying with the absolute confidence he's truly great at this. I mean he's one of the greatest.

Kevin Thong 2 yıl önce

every time i watch him explaining something i feel like a child

mecongberlin 2 aylar önce

A child that finally understands 👍

Sudheer Raju 2 yıl önce

Man I love the physics between you two lol

Chris 2 yıl önce

Would that be physics, or chemistry? :-)

Arubaguy Aylar önce

I was astonished the first time I saw the Sun "set" over the expanse of the Caribbean, and could not reconcile how fast it went from "all there" to "gone" in what seemed like 3-4 minutes. It's even crazier to know the transit actually took place 5 minutes BEFORE I saw it happen, and what I saw was an artifact or mirage created by the refraction of the sunlight.

RogerWazup007 2 yıl önce

Between sunrise and sunset, does the sun's diffraction decrease as it approaches 0 (but I'm guessing it doesn't fully reach 0) at a certain point only to increase again and reach the maximum effect at sunset?

Ted Hoffman 2 aylar önce

You guys are the “Click and Clack” of the physics world 😊

HossSwayerpr 2 yıl önce

I'm just here to listen to Chuck's priceless reaction 😄 I'm looking forward to the not so eliptical orbit explainer 😮

KremitDeFrog 2 aylar önce

Watching the sunset a few months ago in the night sky, with a quarter moon in the night sky, I used the reflection on the moon to demonstrate how the reflection shows where the sun is, and I was confused because the reflection of the moon put the sun a lot lower than the horizon I saw it setting on.. @5:00 explains this.. nice to know I wasn't seeing things and now know why I saw what I saw.. Thank You

P4nth3r 2 yıl önce

I want to buy Neil and Chuck and put them in my living room and just listen to them all day 😅

Aaron the norm 2 aylar önce

Kidnapping; really? 😧

Fehzaan Maqbool 2 yıl önce

I wish I had Neil as my science Teacher and Chuck as his Teaching Assistant

William Gallop 2 yıl önce

Was in Mombasa -98, wanted to see sunrice from ocean. It happend so fast that if you turn head even for a second, sun was already above horizon.

Painthacker Yıl önce

Wow! I always wondered why the charts don’t show the 12/12 split on the equinoxes. Thank you!!!!!

Jay Tyler 2 yıl önce

Hey Neil. Could you discuss an eventide sunset? When you see a green ball in the ocean at sunset. A rarity for sure.

Bob Holmes 2 aylar önce

The illusive green flash.

yann M. 2 yıl önce

Ohhhhh so fresh and energetic you guyz are !!! This is pure awesomeness melting in my ears !!! So refreshing and creating strong images to absorb those beautiful informations !!! Keep it coming ! Cheerzzz !!! Yann

MichaelC Copeland Sr 11 aylar önce

In ALL the years I've been on TRvid, I've subscribed to only 5 channels. StarTalk is one. I don't know how to give you guys a better compliment. You ROCK! As it should be

George Stableford 2 aylar önce

The Moody Blues is my favorite. There are two ways to express the last line . Which is or which is? The illusion is the universe. Thanks for explaining refraction.

Alejandro Peca Yıl önce

It is so awesome that I find this episode right now. Over the weekend I was filming sunsets in one of the canary islands. I noticed exactly that. In the last seconds and watching through the lens of the Camera the sun was already set, but if raise my head and watch it directly, the sun was still visible. I figured out something regarding optics was going on, but I did not exactly what it was - until now. BTW, this must be that the camera lense is somehow unaffected by refraction? 🤔 This weekend I was

Ankit Gupta 5 aylar önce

I think it's because of the altitude! Imagine sitting on a chair and seeing something on the horizon or may be an object which is behind an obstrction. Once you stand up, you can see more of that object behind the obstruction. This is why you could see the sun even after you camera stopped seeing, i assume you were at a higher elevation (even some feet higher then the lens). Have you ever tried watching planes near sunset? You would have watched sunset at the ground, but when you look up the airplane is still receiving sunlight. Or may be another common example, the sun light up the peak before it lightens up the ground!!

cichlisuite 2 aylar önce

I don't think you've figured it out there unfortunately. As Ankit says it's more likely due to a change in perspective, with a higher view point meaning you see the sun above the horizon. Your optics will change the appearance of object relative to one another. It is often said a telephoto lens will "compress objects" but I don't think that explains the phonemenon you mention. Your eyes being higher does. The light that comes into the lens is refracted the same way that the light entering your eye is refracted as this refraction is happening as the light enters the Earth's atmosphere. Incidentally your lens (and your eye) also relies on refraction to give you a focused image. So it is definitely not correct to say that the "lens is somehow unaffected by refraction".