Actual and Apparent Position - Atmospheric Refraction

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13 жыл бұрын

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Do you know the reason why there is an apparent shift in the position of the sun during sunrise and sunset. Well if no, this video will explain the reason behind it. Atmospheric refraction is responsible for apparent shift in position of the sun during sunrise and sunset. Our atmosphere is not a single layer but is composed of many layers of different densities. Atmospheric refraction is caused by the varying density of air among the different atmospheric layers. The optical density of our atmosphere decreases as we go higher. Light from the sun undergoes multiple refractions in different layers of air. This bending of light shifts the apparent position of the sun. An observer on earth would observe the sun rise two minutes before the actual time.

Пікірлер: 272

@ralphbathan2206 4 жыл бұрын

As long as the sun keeps rising, i’m all good.

@dishamadhikary5300 2 жыл бұрын

😂

@farheenalam8672 2 жыл бұрын

😂

@anaygupta2345 2 жыл бұрын

lol

@Coppertunes 11 ай бұрын

Well it doesn't actually rise or set, it's just the Earth rotating until it comes back into view.

@apoorvdeshmukh5420 3 жыл бұрын

Who is here from 10th B??

@tactorlovers2417 3 жыл бұрын

10 A

@m4ddy964 3 жыл бұрын

🖐️ Me

@manshigupta2272 2 жыл бұрын

Me also🤚🤚🤚

@kckeerthangowda7133 Жыл бұрын

@lamboghini8472 Жыл бұрын

Me also

@hz6612 7 ай бұрын

WOOOOOOOOw great explanation ! complete , simple and short and beautiful !

@SimplifiedCreativity3595 6 ай бұрын

Batch 2024 in 12 year old video? Me too

@asthapriya9504 Жыл бұрын

Absolutely right video because the position of sunrise that is east of any country is correct.thnku soo much for this video

@CuriousBipedal 4 жыл бұрын

Absolutely clear video! Such a light bending would also affect other things over the horizon as well such as ships and buildings. On a given day only the top half of a cargo ship might be seen, but without refraction lifting the image up to you, none of the ship would be visible. The same thing happens to a setting sun disc. The bottom of the disc has more refraction lifting light, so as it approaches the horizon, the bottom quarter of the sun compresses noticeably before going below the horizon. Such examples prove that refraction helps us see farther over the horizon that we otherwise should. Also that the Earth is curved.

@elcid451 Жыл бұрын

Only the low IQed would accept that any light hitting the earth is coming at a different angle other than 90°! Which is what this video shows to explain the sunset!

@PeterPete Жыл бұрын

quote - On a given day only the top half of a cargo ship might be seen, but without refraction lifting the image up to you, none of the ship would be visible. great idea but you need to test your hypothesis - how do you intend to do that?

@carloseduardovargasfernand2554 Жыл бұрын

Leyendo mi libro de meteorología llegue aqui ... :3 ... Muy bien explicado !¡ ... Saludos desde Perú :) ...

@dhruvsingh1463 5 жыл бұрын

Thank you sir

@kartikey9742 2 жыл бұрын

9 years ago!😶

@shawnmendesarmy2849 4 жыл бұрын

Thanks a lot

@saimusicaishwariandchaitan191 3 жыл бұрын

Awesome 😎👍

@falcon8895 5 жыл бұрын

Thx

@govardhanrai5269 6 жыл бұрын

Nice

@sanjaysah3866 5 жыл бұрын

Jabardast h sir

@aishwaryakangulwar1494 3 жыл бұрын

🙏🙏

@mcbaked2373 Жыл бұрын

Thanks khan academy

@rajeshtech2284 Жыл бұрын

Awsome

@MacJaxonManOfAction 11 жыл бұрын

Excellent video! :)

@sandhya14921 3 жыл бұрын

A lil doubt, Space is rarer medium and air Is denser medium then the sun's ray should bend towards the normal not away from the normal then here light is bending away from normal. Why???

@ayusharyan8390 3 жыл бұрын

It's bending towards the normal Normal is to be drawn at every point of refraction, not just 1

@elcid451 Жыл бұрын

@@ayusharyan8390 The diagram showing light coming from an UPWARD direction towards the earth is a NONSENSE! The light from the sun 93 million miles away comes at virtual horizontal. So it must BEND downwards towards the center o the earth NOT upwards over the horizon!

@ajay_motorider 10 жыл бұрын

Superbly explained

@saimanideepkatta1423 6 жыл бұрын

Good viseo

@urvashisonpar3024 4 жыл бұрын

Wow....This was so helpful 😊

@mohammedsameer2577 7 жыл бұрын

nice explaination

@kushagrakapoor2105 6 жыл бұрын

Thanks... well explained

@elcid451 Жыл бұрын

The diagram showing light coming from an UPWARD direction towards the earth is a NONSENSE! The light from the sun 93 million miles away comes at virtual horizontal. Don't be fooled by these for kids videos! Try doing your own science!

@noloferratus 3 жыл бұрын

Can you explain how one can 100 percent say with recorded atmospheric data that when one looks at something on the horizon that they are not looking at an example of looming or towering if the object does not look at all distorted?

@XeroGamingYT 7 жыл бұрын

thanks sir!

@nidhisekhsaria8182 5 жыл бұрын

Very elaborate and nice

@ooo6845 6 жыл бұрын

Nice video👍🏻

@vinivichophy921 2 жыл бұрын

Name-Vinivi l chophy Class-10 A Roll-40

@jasmeetsandhu4831 5 жыл бұрын

Superbb explaination, thanks a lot

@elcid451 Жыл бұрын

Lol.. only the low IQed would accept what was stated!

@ASHORSHEMAYA 5 жыл бұрын

Should we add this 2 minutes you said where we see the Sun .. to the 8 minutes where the Sunlight reach the Earth ?

@luigimichini4597 4 жыл бұрын

Absolutely not. The sun does not move, it is the earth that turns on itself and creates the sunset and the rising of the sun. Distance doesn't matter.

@rajdeepdas309 7 жыл бұрын

thanxx a lot meritnation all my doubts are now clear

@shirlyfigarido9773 4 жыл бұрын

Thanks a lot. It was really helpful.🥰🤩

@elcid451 Жыл бұрын

For the low IQed... lol

@OmPrakash-wb5us 6 жыл бұрын

Superb !!

@amees786 10 жыл бұрын

good job dude

@mxdmaulikgoyal2226 7 жыл бұрын

luv u meritnationals i only needed this.....thank u😊😊😊😊😊😊

@decadent. 3 жыл бұрын

Another interesting fact. - light bends upwards near the ground. - Check the experiments on the channel "sky free"

@duckduckgo358 3 жыл бұрын

According to the density of the layers of air it should be bending up and up more each layer when looking upwards. Im confused by this chart on this video

@Gr-Ra5 Жыл бұрын

" light bends upwards near the ground." Nope. Only if there's a denisty/temperature inversion on the surface... So the surface was heated by the sun and is giving of heat that's now hotter than the layer of air closest to the ground etc.

@harin.g6806 8 жыл бұрын

awesome ....... dout is completely cleared

@objectdefiance4027 5 жыл бұрын

Probably the argument that flat Earthers use

@josenavarro5103 2 жыл бұрын

So if light refraction causes light to bend. Are red shifts just that and not gravitational waves?

@Gr-Ra5 Жыл бұрын

Red shifts aren't gravitational. They are your relative length change of the wavelength due to motion. Gravitation affects light's angular path and so does refraction, except gravitation requires far larger distances in space

@karrimuurimaa5622 6 жыл бұрын

Does the radiation of the sun have visible spectrum before reaching the atmospherical layers?

@my3dviews 6 жыл бұрын

Yes, the sun gives of white light, which is the complete spectrum. Plus it also gives of ultraviolet and infrared light, both of which we cannot see. Light would be visible before it hits the atmosphere if you went above it.

@YashNandanPandey 18 күн бұрын

Video starts from 1:16

@prakashbhandary4630 8 жыл бұрын

Awsome.now i got this phenomenon.thax

@jasmitkaur4400 4 жыл бұрын

Very nice explanation ❤😘😘

@akedkapid 11 жыл бұрын

nice..understood..

@kashish9097 2 жыл бұрын

Thank you Sir❤️✨

@elcid451 Жыл бұрын

The diagram showing light coming from the in an UPWARD direction towards the earth is a NONSENSE! The light from the sun 93 million miles away comes at virtual horizontal. Don't be fooled by these for kids videos! Try doing your own science!

@josiascloete 2 жыл бұрын

The problem with the ilustration is the scale of the atmosphere layer, its actually relative so small won't cause such big angle?

@ashulathar4125 5 жыл бұрын

good video

@dhyaaan.hh7 2 жыл бұрын

🤞🏻🤞🏻🤞🏻🤞🏻

@Aditisrv Жыл бұрын

Is this Rana Sir .?

@chenmaluto 12 жыл бұрын

THIS IS THE CLEAREST EXPLANATION EVERRR! THANK YOU SO MUCH!

@shivanshsharma18 2 жыл бұрын

as star apparent position fluctuates. So why didn't the sun apparent position fluctuates. ..??

@argishvenugopal 2 ай бұрын

Star is point object

@all3ykat79 5 жыл бұрын

I was just doing some random calculations, for absolutely no reason at all, then I came across this when checking my facts. So I have a question for you please? I worked out that, without refraction, we would see the sun in the position it was in 8mins 20secs ago. Also, that rotation makes that a 2degree rotated shift, that's probably very, very wrong. But at least my first calculations was correct. I found a mention of 0.5deg being it's optical width. So with your 2min ahead refraction calculation. does that mean the light travels 10mins ahead due to the curve(8+2)? But only in the morning? And would this mean that the sun sets 6mins before we see it (8-2)? Or is it only certain wavelengths that bend that much?

@noobnick2712 6 жыл бұрын

It's too easy Thnx

@54spiritedwill54 8 жыл бұрын

Just came back from a trip at the beach after watching the sunset over the ocean. The sun took on a weird shape before touching the ocean's 'duplicate' horizon. Somehow, it looked like the sun was already getting obscured behind the horizon while the actual ocean was still roughly another 'inch' below that. Hard to describe lol which is why I went here on this video. So that's why the sun looked like that... Interesting!

@saimanideepkatta1423 6 жыл бұрын

Video

@007hashi 3 жыл бұрын

The light from sun is take 8 minutes to reach earth, add these also

@seekeroftruth3623 6 ай бұрын

If You go outside and look at the sun when you can see the rays, you will see that the sun is a much closer light source. The rays will come down like this ^ all the way to to the ground with trigonometry you can calculate the suns hight.

@Jeffy888 3 ай бұрын

What height is it then? 🤔

@thetravellerfeeds 7 жыл бұрын

So basically the air has layers from rarer layers to denser ones and bends towards the normal?

@my3dviews 7 жыл бұрын

+GalByun LuChen The air is thickest at sea level, and gradually gets thinner with altitude. Air is 14.7 psi at sea level and only about 5 psi at the top of mount Everest, which is why you need oxygen to breath when climbing it.

@conradblackii 6 жыл бұрын

+GalByun. You asked if light "bends towards the normal" in this example of the sunrise, and no I don't think it does. From what I can see, the original straight line heads to an observer high above the Earth, it's the thicker air that 'pushes' the beams increasingly further away from the normal (straight line), so that somebody at ground level can see it.

@henajaffar8696 6 жыл бұрын

Hii How r u

@indrojitdutta6058 6 жыл бұрын

GalByun LuChen yes

@starb9373 5 жыл бұрын

Yes

@barbaramecannic8807 6 жыл бұрын

Based on a 12 hour day, the sun travels horizon to horizon at a speed of 1037.54 mph/ 17.29 mile per minute. It takes the sun's light 8.31 minutes to reach earth. This means that when the sun meets the horizon we don't see the light for 8.31 minutes and the sun has traveled past the horizon by 143.70 miles/ 165.25 nautical miles. Based on actual math your assumption is wrong on actual and apparent position. Your dotted line and sun should switch positions to accurately depict the actual math used with the variables that science has presented. The sun is a constant but its light is not, in relation to earth's rotation (Day and Night).

@all3ykat79 5 жыл бұрын

I'm thinking that it is the light wavelengths near red do bend. But they'd need to bend to allow them to be seen 10 mins before the rest to make the 2min mark. There's probably a science paper somewhere with all the calculations already done for me... Listening to Discworld books at bedtime can often lead me down curiosity lane.

@matthewloram6212 3 жыл бұрын

The sun doesn't switch on and off... The light is constant and we are rotating in it. The 8.31 minutes it takes from the sun to earth is irrelevant.

@simplycomplex7605 3 жыл бұрын

@@matthewloram6212 The 8.31 minutes sunlight takes to get to earth is relevant in a way. Sunlight has to travel millions of miles so the light we currently see left the sun 8.31 minutes prior to reaching our eyes. It's similar to the stars we see. Let's talk about the star Rigel, it's the beta star in Orion and it's located about 860 lightyears away. The light we currently see from Rigel left it 860 years ago, so we're viewing it how it looked 860 years ago. Distant objects in the sky, even the moon, we are seeing it in the past due to the distances we deal with when observing celestial objects.

@sayyidsahal1996 3 жыл бұрын

@@simplycomplex7605 but all that is irrelevant, Sun will travel in 8 minutes but one second after it we are also seeing sun in past.

@simplycomplex7605 3 жыл бұрын

@@sayyidsahal1996 to you it may be irrelevant, but it's really not. The sun itself does not travel, the earth rotates on an axis as it simultaneously physically moves around the sun. At all points in time we see the sun in the past because the light that leaves the sun takes around 8 minutes to make it to earth, even the moon (although the moon is much closer to real time as light reflected off the moon takes less than 2 seconds to reach earth). It's the same with any celestial body or event. We are never seeing it in real time, we are only observing the past due to how long it takes light to reach earth.

@thepotato3902 5 жыл бұрын

can someone please explain to me this phenomenon? why does light bend in contact with the surface?

@Tiffany-ov2jf 5 жыл бұрын

refraction as it moves from a rarer to a denser medium

@patbyron2255 4 жыл бұрын

@@Tiffany-ov2jfthis type of refraction was invented by professors to justify their big cars and jobs , its flat

@TheRealCreepinogie 4 жыл бұрын

@@patbyron2255 Yeah, cause the colors during a sunset caused by refraction are totally false. LOL!

@sayyidsahal1996 3 жыл бұрын

@@Tiffany-ov2jf but what is refraction, it is a word.

@sayyidsahal1996 3 жыл бұрын

@@Tiffany-ov2jf but what is refraction, it is a word.

@strangevideos3048 4 ай бұрын

Same happaning with " curved light" that prove black holes 😅😅😅

@fozzgate8599 7 жыл бұрын

July 18, 2017. Las Vegas, NV

@JonathanMartineau 5 жыл бұрын

This is why Eratosthenes was wrong.

@JEEFHARDY2XTREM 11 жыл бұрын

Good explanation! ;)

@mehakdeepsinghpurba2928 5 жыл бұрын

thanku sir

@unikulsch1112 Жыл бұрын

Anyone in 2023 ?

@alfainfos 2 ай бұрын

2024

@sandhyasomaiah1751 7 жыл бұрын

Nice but too shot

@bhavyashah8561 Жыл бұрын

Me 10 th c

@aparajitadas1936 6 жыл бұрын

wts The moral

@krmahesh63 10 ай бұрын

Legends 😂😂😂😂😂😂 one day before exams 😂😂😂😂😂 are here

@hemmel777 11 жыл бұрын

Ah! Thats why the sunrise and sunset are colorful, different light waves are refracted like in a prism

@DANGJOS 4 жыл бұрын

I don't think that's actually the reason they're colorful. The colorful nature should be mostly due to scattering.

@Gr-Ra5 Жыл бұрын

Rayleigh scatteringf.

@anirudh199820 11 жыл бұрын

see my video about atmospheric refraction it has been combined with all other videos with great music

@bidhidwivedi1926 7 жыл бұрын

very clear explanation

@sherehabib5313 3 жыл бұрын

Not well explained

@joeljason5778 2 жыл бұрын

My Teacher Using This In Online Class 😩

@navroopkaur3737 3 жыл бұрын

And the same happens in evening when sun goes below the horizon , the sun rays keep suffering refraction and we see the sun for a longer duration

@elcid451 Жыл бұрын

@navroopkaur3737 Жыл бұрын

@@elcid451 you mean this video is not correct? Then does refraction not play any role,that we see the sun before it actually rises?

@elcid451 Жыл бұрын

@@navroopkaur3737 "Rises" in the context that the sun is rising? Did you not understand that seeing the sun at sunrise according to the globe model due to REFRACTION breaks Snell's Law on refraction? The light hitting the atmosphere would bend towards normal that would be the center of the earth NOT upwards over the horizon!

@navroopkaur3737 Жыл бұрын

@@elcid451 Ohk thank you. I will search for a better and correct video.

@elcid451 Жыл бұрын

@@navroopkaur3737 You won't find one. But do a search on how the Earth's tilt explains the seasons... watch it carefully. Stop it when they show the Winter Solstice... What they don't show you is the tilt changing! Because if they did you would SEE that Autumn and Winter have the EXACT SAME TILT and SAME DAYLIGHT (different directions only)! Spring and Summer have the same DAYLIGHT too! So how does the tilt explain the seasons.. IT DOESN'T! They are gas lighting the simple minded!

@GoldCoast85 2 жыл бұрын

BS, because you showed the horizon but had the refraction starting below the line and the sun at about an 8 am position above

@labbeaj 4 жыл бұрын

So,,,,,,,,,,,,,, You're saying, the sun we see at sunrise, is a mirage. Nope.

@osaidsofi2794 4 жыл бұрын

Yess we can say that as mirage is actually an illusion

@fepeerreview3150 4 жыл бұрын

Of course we are seeing the real Sun. But it is a bit like we are "looking around the corner". It is not exactly where it appears to be to us.

@labbeaj 4 жыл бұрын

@@fepeerreview3150 Yea, maybe but I will never let my eyes decieve me again.

@fepeerreview3150 4 жыл бұрын

@@labbeaj Our eyes are imperfect instruments. But if we understand their imperfections we can correct for them in our brains. And we can also create instruments that enable us to detect the things our bodies' senses aren't capable of detecting. Just today I read an article about how hummingbirds can see ultraviolet light. And of course we know how dogs are able to hear sounds that we can't. It's quite a fascinating subject.

@labbeaj 4 жыл бұрын

@@fepeerreview3150 Truly fascinating! Have you ever experienced synesthesia? I find that to be the most exciting experience I can have...

@explorer800 3 жыл бұрын

I don't think it is 𝚂𝙻𝙸𝙶𝙷𝚃𝙻𝚈

@richardcosta1565 6 жыл бұрын

😂😂😂😂😂

@lowkeys4761 5 жыл бұрын

what? the sun is moving?

@ManjuSingh-yn1kj 4 ай бұрын

So can we conclude that sun god keeps sending radiation but in fragment 😊

@SummiyaTaj 28 күн бұрын

Anyone in 2024🎉

@chaddavid1037 4 жыл бұрын

DO YOU ACTUALLY KNOW THE EARTH IS NOT A SPINNING WATER ROCK HURLING THRU A VACUUM ? IT SOUNDS LIKE YOU KNOW, BUT DONT WANT TO BE RIDICULED. AND VEDIC TEXTS AND MOST "INDIANS" (FROM INDIA, ARE THE SMARTEST PEOPLE IN THE WORLD. AND THE "APPARENT SUN" IS A REAL THING.

@throwawayavclubber7269 9 ай бұрын

lol

@DarklightSpirit 7 жыл бұрын

take sunglasses and look through the concave side like you would through the atmosphere at the sun when it rises, its the complete opposite way. the earth is concave, fact.

@elcid451 4 жыл бұрын

@NEON0NIGHTS 6 жыл бұрын

FLAT

@akhilnair1137 5 жыл бұрын

Like your brain ?

@DigitalPlague 6 жыл бұрын

What a load of bullshit. The Sun has to be angled to make that theory work.

@fredcaldwell9824 Жыл бұрын

Assuming a heliocentric cosmology is so, this video is completely wrong. Here's why. 1. The sun moves it's own height (or diameter) every 4 minutes. 2. The light from the sun takes 8.2 minutes to get to a viewer on earth. As such, the actual position of the sun would have to be twice it's height above the horizon, because we're looking at the sun WHERE IT WAS 8.2 minutes ago. Not WHERE IT WILL BE 8.2 minutes from now. With sunsets however, the reverse would be so and the sun would be two sun heights below the horizon at sunset. But for some odd reason, heliofolk think the same rule applies to sunrise and sunset.

@patbyron2255 4 жыл бұрын

fantasy land read 200 proofs the eatth is not a spinning ball by eric dubay, dont expect him to writ another hundred as he is busy

@TheRealCreepinogie 4 жыл бұрын

He copied them from Samual Rowbotham who was basically an outright liar, just as Dubay is. Both made a lot of money off of flat Earth however.

@TheWokeFlatEarthTruth Жыл бұрын

Hi pat, hope that you are well. I strongly recommend that anyone who has any inclination towards "flat earth" should immediately read dubay and his 200 "proofs" .His total lack of even the most basic scientific knowledge, his total regard for critical thinking combined with his insistence that knowledge gained from everyday personal experience must be completely ignored will make any intelligent rational person either hysterically laugh or cry. Comedy gold. The only question is, poe, lair or grifter? Take care.

@elcid451 4 жыл бұрын

The diagram showing the light from the sun arc upwards and then curving downward is incorrect. The light would be coming horizontal from the Sun as it is 93 million miles from Earth. This video depicts the Sun light coming in at an angle to the Earth which is totally incorrect! The sun light only starts arcing UPWARD when it hits the atmosphere then bends over the horizon to become visible. Nice try but not accurate!

@Gr-Ra5 Жыл бұрын

The light that strikes your eyes would have been above your head without refraction. The amount is tiny, but your post is wrong.

@elcid451 Жыл бұрын

@@Gr-Ra5 You are talking nonsense! The sun is physically set! Therefore the sun being seen is a result of refraction bending the light upwards OVER the horizon! And that breaks Snell's Law

@Gr-Ra5 Жыл бұрын

@@elcid451 "bending the light upwards OVER the horizon!" Hahaha. You don't understand the simple explanation. The light that would pass over you is bent down to your eye. Your explanation breaks Snell's law and so is false. Simple logic.

@elcid451 Жыл бұрын

@@Gr-Ra5 Dim dim... the light from the sun is allegedly coming from 93 million miles away... so it is traveling PARALLEL to the earth when it hits the atmosphere! As the sun orb is below the horizon to the observer it MUST then REFRACT UPWARDS OVER the horizon... and this breaks Snell's Law. Your "The light that would pass over you is bent down to your eye." is NONSENSE! And you your logic is simple... it's for simpletons without a brain! As is the dimwits who posted this video!

@elcid451 Жыл бұрын

@@Gr-Ra5 Ha ha ha... you have reality issues.. Sun PHYSICALLY below horizon means LIGHT from it has to come UPWARDS OVER the horizon! 2+2=4 Clearly you have comprehension issues!

@crypticpregnancytruth 7 жыл бұрын

LIES!!!

@svendabs1200 7 жыл бұрын

LOL, well i know that, and u know that... but 7 billion ppl dont know that.. Dx RIP

@crypticpregnancytruth 7 жыл бұрын

Svendabs I KNOW! I used to think this was all true up until 7 months ago! That was until I actually really thought long and hard about it all. The independently researched for myself, everything about life changed. As a nurse, modern science, medicine, and technology have always been my expertise but once I opened my eyes there was no turning back. It was quite mind boggling and frankly soul crushing but once I went down the rabbit hole I was very happy excited even to be finding the real truth out for myself.

@svendabs1200 7 жыл бұрын

Cristal Molly Prince DH it's quite the time to be around tho, I bet in the days of Sodom and Gomorrah (we live in modern sodom) I bet in those times the ppl experienced weird mandela effect type happenings right before the cataclysmic happenings

@crypticpregnancytruth 7 жыл бұрын

Svendabs Most probably. A very exciting time to be here indeed!

@jibriel4918 7 жыл бұрын

Cristal Lujan DH You mean the earth is flat?