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zakruti.com » Knowledge, science, education » TED-Ed
Sunlight is way older than you think - Sten Odenwald

Sunlight is way older than you think - Sten Odenwald

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Rating: 4.0; Vote: 1
It takes light a zippy 8 minutes to reach Earth from the surface of the Sun. But how long does it take that same light to travel from the Suns core to its surface? Oddly enough, the answer is many thousands of years. Sten Odenwald explains why by illustrating the random walk problem. Lesson by Sten Odenwald
Date: 2020-08-22

Comments and reviews: 10


just because he has a big degree and says it with such authority doesn't make it true! - the models and the math is based on guesses - we really know squat - the Goddard space flight center says 40, 000 yrs - so who is right? - the step algorithm itself is probability based, with everything in motion, a photon might in fact not hit anything, and, we have no independent measurement of gravitational time warping, i say (with the authority of common sense; ) that we haven't got a clue - there is a gazillion things about the universe that our biological pattern matching computer (brain) cant match - i still remember when Pluto was a planet - i have seen big people with big authority give different answers to this - i dont know is a perfectly good answer! but it doesn't pay as well and certainly not as prestigious; ) - there is so much junk science out there, i feel sorry for the kids that are buying all this BS, they are going to grow up either scared, or more likely so cynical they will have no respect for authority, look around, your see it happening before our eyes,
the most common sense answer to this question - is some photons a little slower than light speed and some never - and we dont have enough info to set an average!

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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.
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Well here's my thought.
Photons with high energy will have low wavelength and they will reflect by protons but photons with low energy will have high wavelength and hence it will just pass through the protons. Am I wrong?
Anyone? The video says the opposite.

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Plot twist. you missed the space-time difference effects. Time is much faster on Earth than in space. Sun is much denser and has a stronger gravity than the earth. so the time inside the sun's core is very fast relative to the earth time.
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That's not a complete answer at all!
The energy transfer from the core to the outer plasma means that the plasma will emit some of its energy as new photons, and those are mostly the ones that we get to see.

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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

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Trump doesn't remember anything for voting 2016 regarding Coronaviruses, 80, 000 deaths, Flu, trade wars
China corruption, unemployment, destitute The Worst ever Preso Donald Trump -

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In fact: For light itself, it didn't get old at all
According to Einstein's theory of Relativity, massless speed of light particles doesn't move through time.

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We are living in 4th kalpa journey, out of 10 kalpa in process.
That means we have not surpass 2 but 3 ice age as depicted in the video

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AT LAST! 170, 000 years in the making and I finally get to be witnessed by humans on Ear--wait a second. a-are they wearing sunglasses!
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