This science stuff warms my inner core.

@Patrick-cy2zh

7 жыл бұрын

Eddie King lol

@J.5.M.

3 жыл бұрын

Core workout? 😉

@zac8471

3 жыл бұрын

Science joke

@Wetnapkin69

2 жыл бұрын

Beer warms my inner core, lol

@Luisa-xr2jf

2 жыл бұрын

Yes

superb… crisp, concise, beautifully illustrated, easy to absorb… thank you… keep up your important work…

@jumbochamploon2591

9 жыл бұрын

Best Fit Square Channel there was just one *probelm* with it

@thebeast5215

3 жыл бұрын

@@GriuGriu64 are you an astrophysicist? Please bless me with your infinite knowledge

Ô Great Photons, your travel was long and full of obstacles ... but last you have reached my eyes. They welcome you as old friends and accept the gifts you gathered from your long and perilous journey.

@Dptl

4 жыл бұрын

@David Z - well said

@cutiebunnyamber3447

2 жыл бұрын

fuckin poetry.

@gf4453

Жыл бұрын

Beautifully said.

This is one the best Ted-Ed video I'd ever watched. So compact yet so much information.

@broncos435

2 жыл бұрын

just like a photon 😳

When you learn more about science from KZread than from school.

@riasharma3927

4 жыл бұрын

Change your school then.

@udayjadhav4134

4 жыл бұрын

Ok boomer

@bukucinho

4 жыл бұрын

Krexite Thats cause they dont teach this stuff bro

@CatatonicImperfect

4 жыл бұрын

that's because these clips are just interesting factoids, while school will try to give you a deep and comprehensive understanding of a subject matter.

@sirk603

4 жыл бұрын

Julian bru they don’t do that.

Now that's what we want from TED-Ed.

@user-ve7ji4ke6b

3 жыл бұрын

ohgcg dfgae!dda fsf

The sound and visual effects were awesome!

to us, it spent ~170k years. to light, everything occurs instantly within an infinitely small amount of time.

@jonitalia6748

4 жыл бұрын

I came, thanks.

@AngelLPena

3 жыл бұрын

@@jonitalia6748 Pause

Great stuff. If I wasn't retired, I'd use it in class tomorrow. Still follow all things SpaceMath.

@MsCybervamp

5 жыл бұрын

Since this is your area and my math skills are so poor, can you explain to me why that equation regarding the steps it takes to get a km away from the house works? They said you step a meter every time and that you take a million steps. How is that putting you just a km away? Do they mean because it’s a random direction each time it is taking you off course from the destination of a km? And are they saying that the goal is a straight line km from the door, and that is why (because of the random altered steps) it takes you that long to get there?

@EmbeddedWithin

3 жыл бұрын

Hi

@EmbeddedWithin

3 жыл бұрын

@@MsCybervamp hi

@mrararatovich

2 жыл бұрын

@@MsCybervamp I'm sure it's one km away in any direction

We had to invent clothes while waiting for those damned photons to reach us.

Sometimes i think my life is full of struggles bt watching universe fastest thing struggling for 170000 yrs ......makes me think that my life is so much easy....💙 thank u for that amazing video

Clean explanation + great animation= superb video..thanks for this video.

Great video! Though the one problem with it is it says the light bounces around. Actually it is reabsorbed and re emitted, but the effect of it being reabsorbed and re emitted is similar to it bouncing around, so I understand them using bouncing around as an analogy to explain the photons journey. It's just easier to explain it in those terms.

Idk about you guys but each time i hear their intro and outro i get goosebumps and i LOVE IT

Thanks , great voice, great expression, great maths and a great scientific modal expressed in shortest time, great video overall. Thanks again.

Brilliant video - very informative - thank you!

This was really fascinating!

Seeing the end of the video, made me realize my whole entire existence. I'm scared and worried.

That was really interesting and the animations were great! :D

Amazing video! Please keep up creating this content!

Muchas gracias TED-ed para tus videos educationales. Nos necesitamos esos para aprender rapido.

Love this video!

very informative and super impressive with the information organisation especially love the convey method that details go into more details

Very informative, thank you.

Fascinating

This was a very interesting episode

Amazing.

thanks for sharing

How much of the sun's light is made in the core? The surface is plenty hot enough to produce a lot of light on its own.

@michagrill9432

5 жыл бұрын

But the surface is by far not dense enough

@donnikolaus5869

5 жыл бұрын

The surface isn't dense or hot enough for nuclear fusion. The heat in the outer layer comes from the radiation of the inner core (and a bit by friction). So, most of all light comes directly or indirectly from the core.

@SergioBobillierC

4 жыл бұрын

@Kieron is right, not every photon emitted by the sun comes from nuclear fusion, the plasma on the surface of the sun is certainly hot enough to emit visible light (and perhaps even more energetic waves). So its incorrect to say that all the light coming from the sun is ~170k years old.

@AjayJain-ef2mz

4 жыл бұрын

Hey! What happens to wavelengh or frequency of light as it comes out of the core? I mean does the wavelenght/frequency increase or decrease? And how does it start intially? Thnx.

PERFECT !! :) thank you

I’m awed right now

Ngl this is making me appreciate my days better.

You lost me before the first minute but I finished the video because of the very good voice, sound and illustration. ❤️

@yogeshhm7165

4 жыл бұрын

It was neat a explanation, not so difficult to understand.

Wonderful

Sounds was dope.

Amazing

mindblowing

The 3D part looks adorable.

Mind bending

YOOOOO, this is dope dude

170,000 years pinballing its way towards the Sun's surface, all while still moving at the speed of light...that's awesome

@anandu6859

2 жыл бұрын

The speed of light in a medium is constant in every frame of reference. So it doesn't changes.

Nice!

fascinating...

I basked for a second to appreciate the existence of these tiny photons.... my heart.

What about time dilation? Does it have any effects?

@killerjg

5 жыл бұрын

Yes, it was missed.

Is it just me or do I really like the sound it makes when a proton gets hit

This idea has been around for soooo long. I think it was around 2005 when this was announced. 10 years late TED -tisk-

I'm never going to see and feel the sunlight the same way again.

imagine u get this kind of learning video in daily school instead of just looking at books when we are young

Sooooo, who was it that measured the distance between photons? I'm just kind of curious how they made such a measurement

And I think to myself... What a wonderful day.

Knowledge is power

1:27 so many steps would it take before you would actually take 2 full strides? :-D

Thank you for the series of existential crisis.

That's a real example that the results people show up today come from years of hard work

This is something to think about.

Great episode. I wish I knew physics and math better. Also, remind me, how did we calculated Sun's mass?

The core is a doorway and the sun isabentuty holding it open. The light is conscious and builds abridge to reach us .. I sense this

WOW!

So, how can I apply this to Plinko?

Anybody got any change?

Messed up my mind!

Probelm?

@Misclickable

9 жыл бұрын

+Caligula138 They misspelled "Problem" as "Probelm".

@Misclickable

9 жыл бұрын

Kabitu1 Somebody asked why people were commenting "Probelm" and if they have missed something.

@AnstonMusic

9 жыл бұрын

1:18 to anyone who's wondering.

@TheFlightSimFreak

9 жыл бұрын

Anston Music Oh... Well that's a Probelm!

@joseph-kim

8 жыл бұрын

+Kevin Le They fixed it.

How could they have formulas for everything?! 😮

What about surface reactions?

What about the photons generated at the surface of the sun? They have to travel only the space between the sun and the earth, requiring only 8 minutes?

00:22 the aienser ? or the aahn-ser ?

Me: *Gets sunburn* Me: What took you so long?

So theoretically there's a given amount of photons still ricocheing inside the sun from the day the sun first started shining and they could be still bouncing around in there till the sun dies or reach the surface and escape. Not only that but photons that were started at the beginning of the universe before our own sun that collided with our own sun and possibly got trapped from bumping into it while on a course towards wherever. That's pretty amazing and interesting at the same time

@dekippiesip

2 жыл бұрын

Yeah, because it's a random proces it takes 170.000 years on average. So there is some tiny chance a photon could be stuck in the sun for billions of years, and because of the extremely large number of photons, some actually are stuck for that long....

Who else thought of "Centipede" the arcade game, when they talked about the protons getting hit by photon??

Can you tell me what is photon and plasma????

good

speechless..

Unless I'm mistaken... does this suggest that light emanates ONLY from the core of the sun!? I never thought of it that way... always thought it's a big and, more or less, uniform "ball of light" 🤔

Btw How do they know that mass of the sun ?🤔

isn't the photon technically absorbed and then reemitted? also, don't electrons absorb photons and reemit them too?

wow

and still hav a perfect shot on my face every morning... >.

Why is a proton huge for a low energy photon? (And small for a high energy one)

@MilitanT07

9 жыл бұрын

***** Wavelength. Since speed is fixed for all wavelength of light, the higher the frequency, the shorter the wavelength, the less the energy. That's why microwaves can't escape your microwaves door even with big bores in the metal shield.

@TheBenenene10

9 жыл бұрын

But how does the wavelength affect the relative size/chance of interaction?

@MilitanT07

9 жыл бұрын

***** Because the wave is so large that it is unlikely to miss the proton. Photons are wave until they are about to collide with something. That's the best of my understanding as a Mechanical Engineer.

@EmosGambler

9 жыл бұрын

MilitanT07 wait.. isn't it the less energy, the longer wavelenght, the LOWER frequency?

@EmosGambler

9 жыл бұрын

MilitanT07 for example: gamma particle got the highest frequency and the shortest wavelength, E = h*v, so the energy grows with frequency

I don't know how to process this information!! Does this mean that the sun we see is 170k years + 8 minutes old?

My only issues is, at what point does it stop being the same photon when it is absorbed and emitted out as a new photon in these collisions?

@vaitrafra

9 жыл бұрын

Bjartur Mortensen does photons have identities (seriously)?

My question is, How do people get these measurements of the suns diameter and distance? A Guess-timation based off of Highly complicated math? I'm honestly curious.

@ChopStixize

9 жыл бұрын

Science?

@Sekstant

9 жыл бұрын

The prophet of Cory Leo Valdobinos I think it's parallax, check it.

@ajtronic

9 жыл бұрын

The prophet of Cory Leo Valdobinos Simple geometry for the distance, then use that distance in Netwon's law of universal gravitation to find the mass of the Sun.

@Theraot

9 жыл бұрын

The prophet of Cory Leo Valdobinos Ancient greeks used parallax to estimate the distance to the sun, with little success. Using the equinoxes and kepler equations works better. Also currently there are currently better measurement instruments that makes parallax calculations more reliable to get both distance and size of the sun. Finally if we have a good estimate of the distance, you can use a picture to calculate the size - given you know the lens curvature - via geometrical optics calculations.

Very Interesting...but I don't have Thousands of years to appreciate it...better learn quickly, no??

Thanks to science we have TEDEd.🙏🏾

Feeling like my lucky day, cause things are going my way.

I'm literally watching this video 7 years after it has been posted 🤣

ohh wow

Neat! Great video, I sure hope it is accurate, otherwise I'm going to look like an even bigger jerk when I pop-quiz my, now, ignorant family & friends.

Sunlight is as old as I thought

Sun light from the sun reaches us as it is now.

The Random Walk Probelm? Never heard of it... I have heard of the Random Walk Problem though... interesting stuff... just an FYI TED editors!

I like it

cool

Wow

Exactly 5 years later

I think that due to the intense heat, the surface of the sun has gone incandescent, so it glows

How do you solve the random walk problem for heat-radiation in people?

I don't understand the calculation... :/

I have a question. So light takes all that time to reach the surface of the sun and approximately 8 minutes to reach Earth. What would happen if the sun itself hypothetically cease to exist? We know that we'd have 8 minutes of sunlight to enjoy. But what about gravity? When would the Earth no longer feel the suns gravity? Do gravitational forces or lack thereof happen faster, slower or equal to light.

@dekippiesip

2 жыл бұрын

Exactly equal to the speed of light

I think that the calculation of the first estimating has some mistake.. because the Sun's protons are evenly spread out,making the average distance between them about 1.0 x 10^-10 meters. To random walk the 690,000 kilometers from the core to the solar surface would then require 4.8 x 10^37 steps (Not- 3.9 x 10^37 steps), giving a total travel time of 500 billion years (Not- 400 billion years).