yego.me
💡 Stop wasting time. Read Youtube instead of watch. Download Chrome Extension

The Sun is NOT Yellow! #shorts


less than 1m read
·Oct 29, 2024

The sun is yellow, or is it? You're used to seeing a happy yellow circle floating in a blue sky, but that's fake news. If you placed a prism in a sunbeam in space, you'd see that the sun radiates light in every color of the visible spectrum. If these colors were paints mixed together, you'd get black. But with light, mixing them produces white, the true color of sunlight.

So why does it look yellow to us? Let's replace the prism with a slice of Earth's atmosphere. Here, nitrogen and oxygen molecules scatter sunlight in all directions. This makes our sky blue, as the blue light with shorter wavelengths scatters more than red light. If scattering didn't happen, the sky would always be a transparent window to the stars.

But because the sky has taken some of the blue, sunlight appears yellow to us. The effect is strongest at sunrise and sunset when there's more atmosphere between you and the sun, making even red light scatter and dyeing the sky orange. Red light can also be scattered by things like water vapor and soot particles, making ocean sunsets even more amazing.

More Articles

View All
2015 AP Physics 1 free response 1a
Two blocks are connected by a string of negligible mass that passes over a massless pulley that turns with negligible friction. It is shown in the figure above. We see that the mass M2 of block 2 is greater than the mass M1 of block 1. The blocks are rele…
The elements of a poem | Reading | Khan Academy
Hello readers! Let’s talk about poems. Poetry is a special kind of writing. If ordinary writing is like talking, then poetry is like singing. Poetry is a way of making art with language. Poems can express huge ideas or feelings. They can be about the soun…
Arizona: Meet Khan Academy & Khanmigo
Hi everyone! Welcome to our webinar to discuss the good news. We officially have a partnership with Con Migo for this school year to fund Con Migo for students, um, and it’s broadly across the State of Arizona. So if you are a member of a public school di…
Bringing the Meat to Higher Ground | The Great Human Race
Can’t be too greedy right now. In the midday heat of East Africa, lions often retreat to the shade and return to their kill when the sun starts to set. This lion’s gonna come back. I wish we could take the height and everything else. I can’t get it all…
Good Explanations Are Hard to Vary
Brett, would you say that a scientific theory is a subset of a good explanation? Yes, they’re the testable kinds of good explanations. Falsifiable theories are actually a dime a dozen. This doesn’t tell you anything about the quality of the explanation yo…
Determining angle of rotation
We’re told that triangle A’B’C’ (so that’s this red triangle over here) is the image of triangle ABC (so that’s this blue triangle here) under rotation about the origin. So, we’re rotating about the origin here. Determine the angle of rotation. So, like …