Topic: eyes

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Colorscope, an exploration of color across cultures

How do different cultures perceive and use color? Colorscope touches upon those perceptions and uses throughout history in this series of videos from CNN Creative, written and narrated by British art historian and bro...

How to make a Hollow Mask Illusion

How do we perceive faces? With some balloons, newspaper, some paste for paper mâché, and paints, you can create a hollow mask that appears to follow you as you move back and forth around the room. Rachel and her child...

Why peregrine falcons are the fastest animals on earth

Peregrine falcons are the fastest animals of the land—and it's no wonder, their bodies are built for speed. While cheetahs can run up to 70 mph on land, peregrine falcons can dive at speed of over 200 mph. That's fast...

You Can’t See This (Mind Tricks)

Our brains and eyes aren't always showing us everything that's available to see. Instead, learning, memory, and expectation changes our vision to fit as much as we can comprehend in any given moment. In this AsapScien...

The Snail-Smashing, Fish-Spearing, Eye-Popping Mantis Shrimp

The mantis shrimp is a fascinating creature. One kind impales prey with a spear-like appendage and another smashes prey with a built-in club — the fastest attack in the animal kingdom. "At 30 times faster than the bli...

How do animals see in the dark?

How do animals see in the dark... and sometimes in color? Learn more about the night vision of the tarsier, cats, toads, and hawkmoths in this illuminating animation from TED Ed. Learn more about eyes in these videos.

How Old Is Your Body, Really?

Have you ever heard the statement that the cells in your body are completely replaced every seven years? Is this true? In this beautifully illustrated episode of Skunk Bear, NPR's Adam Cole explores how long our diffe...

The Blind Astronomer of Nova Scotia

Tim Doucette is legally blind, yet he sees the stars better than most people. A childhood diagnosis of congenital cataracts forced doctors to remove Doucette's lenses and widen his pupils. That left the amateur astron...

Inside the Pantone color factory

At Pantone's factory headquarters in Carlstadt, New Jersey, there are highly trained color specialists that can see subtle differences between similar colors... really similar colors. Pantone specializes in art and de...

How do eyes work & how do glasses help us see?

Glass, water, and the eye are three different transparent mediums that change the direction of light, a phenomenon called refraction. Refraction in the eye helps us see by bending light into an accurately focused poin...

This is What Outer Space Does to Your Body

NASA astronaut, engineer, and former football player Leland Melvin explains how the human body changes when it leaves the confines of Planet Earth. Your body may become taller, your heart might get smaller and change ...

The GPS-navigated rolling of the dung beetle

From all across the galaxy, the light of billions of stars finds its way to Earth, passes through our atmosphere, and enters the eyes of a small South African beetle rolling a ball of dung. The beetle’s eyes are not s...

How do your eyes perceive color? – Physics Girl

When we talk about mixing colors, it's often because we're mixing paint, but what about light? The retinas in our eyes respond to light differently because of two types of photoreceptors: rods and cones. Rod cells hel...

Artist Cyrus Kabiru makes eyeglasses from trash & e-waste

Kenyan artist Cyrus Kabiru designs and makes eyeglasses from Nairobi's discarded trash and e-waste. In a mix of sculptural art, fashion, and social commentary, the bifocals explore "the aspiration of popular culture b...

How Many Stars Are There? – It’s Okay to Be Smart

How many stars can our eyes see on a dark night? How many stars can we see with something even more powerful than our eyes? How many stars exist?? And how are grains of sand a part of this?! Joe Hanson and PBS Digital...

What are those floaty things in your eye? – TED Ed

Have you ever seen something small and strangely transparent float into your field of vision? ...as if it's on your eyeball? No, you're not seeing things! And no, those are not microscopic bugs or bits of dust in ...

Why Is The Sun Yellow and The Sky Blue? – MinutePhysics

Why is the sun yellow and the sky blue? Why can we see the stars at night? Why is space black? And why is the sky more red, orange, and even pink at sunset? In this Minute Physics episode, we leap into "the grand ball...

Why are Stars Star-Shaped? – Minute Physics

If we know that stars are massive spheres of hot gases, then why do we draw them with lots of twinkly points? Why doesn't "star-shaped" mean a round shape? The answer: We see stars as pointy (and so does the Hubble Sp...

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