Safari Live - Day 368 | National Geographic

We already know the derivatives of sine and cosine. We know that the derivative with respect to x of sine of x is equal to cosine of x. We know that the derivative with respect to x of cosine of x is equal to negative sine of x. So, what we want to do in…

In science, we often have to deal with some very large numbers. For example, the mass of the sun. That is the mass of the sun. Two followed by thirty zeros in units of kilograms. That is two thousand billion billion billion kilograms. There has got to be …

If I were to ask you what is five minus three plus two, what would you say that is? Pause this video and try to figure that out. All right, well, if you wanted to tackle this, you would really just read it from left to right, or you would compute it from…

Hello everyone. So here, I’m going to talk about the directional derivative. That’s a way to extend the idea of a partial derivative. Partial derivatives, if you’ll remember, have to do with functions with some kind of multivariable input. I’ll just use t…

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 colo…

(Mysterious music) [Woman] Black holes are among the most fascinating objects in our universe, and also the most mysterious. A black hole is a region in space where the force of gravity is so strong, not even light, the fastest known entity in our univer…