Topic: light

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Why every picture of a black hole is an illustration – Vox

No one has ever seen a black hole. There have been illustrations and computer simulations, but not even astronomers have seen a black hole... yet. In the spring of 2017, we might see... something. As a part of...

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...

The Science of Skin Color – TED Ed

When ultraviolet sunlight hits our skin, it affects each of us differently. Depending on skin color, it’ll take only minutes of exposure to turn one person beetroot-pink, while another requires hours to experience the...

How do we know what stars are made of?

How do astronomers know what stars are made of when those stars are light years away from Earth? These demonstrations by Dr Francisco Diego reveal the colors of light that are produced from sodium chloride, rubidium c...

Yosemite’s Horsetail ‘firefall’ at sunset

Filmed on February 15th, 2016, a brilliant sunset illuminates the white mist and spray of Yosemite National Park's Horsetail Fall with bright oranges and reds. Called a 'firefall', the name for this optical illusion "...

ALMA, a telescope so powerful it can see into the past

There’s a telescope deep in Chile’s Atacama Desert that takes pictures so massive that it requires a supercomputer as powerful as 16 million PCs to decipher the images. This is the Atacama Large Millimeter Array (ALMA...

LENSES, an interactive light & sound installation by Hush Studios

Lenses by Hush Studios, an interactive light and sound installation that transforms as prisms bend and refract light in different ways... just move and twist them on the wall surface. The composition is "then read by ...

Can you push a spacecraft with light? – Physics Girl

In this episode from Physics Girl, Dianna Cowern explains how space ships can use sunlight to travel the stars in the same way that boats use wind to move across the seas. While solar sail spacecraft design is a more ...

Le Petit Chef – Projection mapping with mini dinner animations

A table of four friends has ordered dinner, and look! It's already being served... by a miniature chef? He's catching the meal from a sea that's precisely mapped onto the tablecloth. This is Le Petit Chef - Bouillabai...

Murmuration Chandelier

Inspired by the twisting, turning phenomenon of starling flocks, called a murmuration, this is Murmuration Chandelier, a kinetic sculpture by designers Richard Harvey and Keivor John: When you look at a murmuration...

How to paint with ice skates, a light painting beginner’s guide

This tutorial for light painting is a great introduction for how long exposure photographs capture motion, and change the amount of light in an image. At-Bristol Science Centre's Heather Nichol explains how to modify ...

How To Make Glow-In-The-Dark Slime! – Gross Science

Phosphors, polymer chains, and photons! In this episode of Gross Science, Anna Rothschild shows us how to easily make glow-in-the-dark slime using common household items: Hot water, borax, glow-in-the-dark paint, and ...

DISHDANCE, a time lapse for The Skyglow Project

Created for The Skyglow Project, an astrophotography book and time lapse series by Gavin Heffernan and Harun Mehmedinovic, DISHDANCE observes massive radio telescopes during the day and night. The project also capture...

Macro Video of Iridescent Soap Bubbles – Stereokroma

The next time you get the opportunity to blow some soap bubbles, be sure to take a long, close look at them. Those ever-changing rainbows sliding around across the surfaces of the bubbles can be spellbinding... like a...

General relativity & why GPS wouldn’t work if we didn’t know about it

General relativity, what Albert Einstein said was the happiest thought of his life, basically expands upon the idea that "the laws of physics are the same everywhere". Light and gravity behave in the same way for you....

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...

How do plants grow in space? – Science Friday

Microgravity, different kinds of light, extreme conditions... Growing while in orbit or on Mars are two experiences that earthbound organisms have never needed to adapt to in our evolutionary history. How do our bodie...

How the Baccarat crystal studio makes a blown crystal chandelier

Made from melted silica sand, potash, lead (over 24%), and other ingredients, crystal is heavier and more sparkly than glass, making it a perfect material for this light refracting decorative ceiling lamp: The chandel...

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