5 Things to Know About Eyes | Explorer

less than 1m read

·Nov 11, 2024

Hi, I'm Michael Stevens, and these are five facts you need to know about the eye. Research into the evolution of the eye is creating all kinds of technological breakthroughs. Technologies like robots, drones, and cameras that can detect cancer earlier have all benefited from research into the eye.

Eyes didn't evolve linearly in animals like you and me. They didn't evolve from the oldest species to the youngest or from the simplest to the most complex. Instead, the eyes that animals have evolved independently to help them survive. Stereoscopic vision, that is, taking 2D images from our eyes and creating a 3D image in our brains, evolved from our needs to hunt for food.

Humans can see about 10 million different colors. This helps us select mates, but it's nothing compared to what other animals can do. Birds have four color receptors; we only have three, but that's nothing compared to the mantis shrimp, who has 12.

Animals with horizontal rectangular pupils, like goats, are able to physically rotate their eyes inside their heads when they put their heads down to graze. This protects them from predators. They can see what's in front of them while their head is down. It doesn't always work, but it has helped their species stay afloat, and that's what matters.

Volume of pyramids intuition | Solid geometry | High school geometry | Khan Academy

What happens when 2 Weedeaters Hit Each Other? (28,000 fps SLOW MOTION) - Smarter Every Day 255

View All

Re: The Trouble With The Electoral College – Cities, Metro Areas, Elections and The United States

Hello, internet. Let’s talk about this map, this argument, and the Electoral College in general. In my “Trouble With The Electoral College” video from 2011, I was wrong to use the city limits for that part of the argument, rather than the more expansive m…

Why Dyslexia Might Just Be a SUPERPOWER | Kevin O'Leary

[Music] Well, when I was growing up, I was born from immigrants: an Irish and Lebanese father, Lily’s mother. By the time I hit seven, it was clear I had some really big problems in math and reading. Going back to the education, I had a really bad case o…

The Fifth Amendment | The National Constitution Center | US government and civics | Khan Academy

Hi, this is Kim from Khan Academy, and today I’m learning more about the Fifth Amendment to the U.S. Constitution. The Fifth Amendment is one of the better-known constitutional amendments since we frequently hear references to suspects taking the Fifth in…

Forget Scarecrows—Falcons Protect This Farm | National Geographic

We’re kind of like security guards. We arrived before the sugar content of the fruit starts going up. As the foods ripen, the birds are more and more attracted to it, so we stand guard ten hours a day in that field until basically the fruit is harvested. …

Finding specific antiderivatives: rational function | AP Calculus AB | Khan Academy

So we’re told that ( F(2) ) is equal to 12. ( F’ ) prime of ( x ) is equal to ( \frac{24}{x^3} ), and what we want to figure out is what ( F(-1) ) is. Alright, so they give us the derivative in terms of ( x ), so maybe we can take the antiderivative of t…

Motion along a curve: finding velocity magnitude | AP Calculus BC | Khan Academy

A particle moves along the curve (xy = 16) so that the y-coordinate is increasing. We underline this: the y-coordinate is increasing at a constant rate of two units per minute. That means that the rate of change of y with respect to t is equal to two. Wh…

5 Things to Know About Eyes | Explorer

More Articles