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
Remote Learning Best Practices from a Cyber School Teacher
Hi everyone, this is Jeremy Shifting at Khan Academy. Happy Monday! I hope you had a restful weekend—or at least as restful as we can get under these circumstances. Um, I want to thank you for joining us earlier this week for a great conversation with Mar…
Life’s short
Life is short. I’m dying every minute at a time. Right? It’s a, it’s a— you, you. We’ve been dead for 13 and 12 billion years. That’s a lot! That’s how long from The Big Bang till now. The universe will be around 70 billion years. You’re around for 50, 70…
EAR Earrings -- LÜT #26
A bird house that looks like a surveillance camera and Mister Spock-topus. It’s episode 26 of LÜT. Now, here’s a perfume designed to make you smell like a book. And Generate offers a limited edition life wall clock. It’s just like a normal clock, except s…
Homeroom with Sal & Congresswoman Karen Bass - Wednesday, August 26
Hi everyone, Sal Khan here. Welcome to this Homeroom live stream. As always, I’m very excited about the conversation we’re going to have with our guest today, Representative Karen Bass. But before we get to that, I’ll give my standard announcements. Fir…
The Aufbau principle | Atomic structure and properties | AP Chemistry | Khan Academy
In other videos, we introduced ourselves to the idea of orbitals, and these are various orbitals in their various subshells that you could find in various shells of an atom. In this video, we’re going to get a little bit more practice with electron config…
The 19th Amendment and citizenship | Citizenship | High school civics | Khan Academy
[Instructor] We’re nearing the 100th anniversary of the ratification of the 19th Amendment, which says that the right of citizens of the United States to vote shall not be denied or abridged by the United States or by any state on account of sex. This was…