Why is the Sun Yellow and the Sky Blue

Indigo may be a very vague and unnecessary color, but it has an interesting history that involves some plants, turmoil, and Isaac Newton's interest in the number seven. Hosted by: Hank Green

Where do glaciers and icebergs get their beautiful blue color? This unique blue might be nature's most brilliant, and the color arises in a very special way thanks to some surprising interactions between light and water molecules. Who...

Why is the Sun Yellow and the Sky Blue

Carrots get their orange-y color from, you guessed it, an organic chemical. This chemical, called beta carotene, gets its pigment from its conjugated electron system. We’ve talked some already about conjugation, but in this episode of...

Explore the theories of human consciousness and the science of how your brain works to create a conscious experience. -- Patient P.S. suffered a stroke that damaged the right side of her brain, leaving her unaware of everything on her...

Why isn't the sky violet?

What scientific thinkers and achievements have led to vast improvements in optics over the centuries? Discover the fascinating ways that our understanding of light informs the world in which we live.

Dorothy went over one. LeVar Burton read to us under one. In a song, Kermit the Frog connected us to one. Even Mork's suspenders were made of them. Our culture, and our skies, are full of rainbows, but do you know how they form? Do we...

Indigo may be a very vague and unnecessary color, but it has an interesting history that involves some plants, turmoil, and Isaac Newton's interest in the number seven.

Paul Andersen explains how natural selection is a major mechanism in evolution. The video begins with a discussion of Charles Darwin and the details of natural selection. The data of the peppered moth during the industrial revolution...

New ReviewWe look at the process of refraction and explain the natural phenomena of rainbows.

Why is the sky blue? Well, it is not quite actually blue. Here's the story:



The sun does not emit yellow light like you’ve be

en taught.

It emits White light…and white light is made up of all the...

Easy Backyard Pool Made from Pallets and a Big Wheel for Ultimate Enjoyment!

In this video, the teacher explains how sunlight appears in different colors depending on the particles in our atmosphere. They compare our atmosphere to a prism, where white light enters but is scattered into different colors as it...

NaCl, a perfect ionic crystal, has an alternating pattern of Na+ cations and Cl- anions. When heated, some Cl- anions can be lost, leaving anionic vacancies. These vacancies are occupied by electrons, creating F-centers, which are...

There are three main reasons why we don’t see all the colors in a rainbow: 1. The colors we see in a rainbow are spectral, which means they are also present in the visible spectrum. 2. Some colors, like pink and brown, are made when two...

A projector is a machine that projects an image onto a screen. LCD projectors work by shining a light through three LCD screens. When the colored light passes through these three screens, they relay three versions of the same scene....

A continuous range of frequencies of electromagnetic radiation, such as that produced when white light is refracted through a prism.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds...

The world appears to be a colourful place, but what are colours? What properties of light determine what colour we see? Physics - Waves - Learning Points. Colour is how our brains perceive different wavelengths of light. Newton...

We use a prism to split white light into its constituent colours. Light is passed through a slit in a screen before it hits the prism. The prism refracts the light and we can see the different colours. A second slit can be used to see...

Light is shone through a glass prism ... what happens next?
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Physical processes -Light


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Learning Points
White light can be split into
t

he spectrum of colours by a prism.
...

There are many types of light we cannot see ... find out how special cameras can detect infrared light.
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Physical processes - Light


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Learning Points
White light is ma
d

e up...

Understand how rainbows are formed.
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Physical processes - Light


- White light />

Learning Points
Rainbows are arcs of sunl
i

ght split into different colours.


Rainbows are...