This is Not a Rainbow

If you could survive a trip to the very first moments of reality as we know it, what color would you see?

We know that not everyone's vision is perfect, which is why some of us need glasses. But some people can also just see more stuff than others! From seeing UV and infrared light, to even having bonus color receptors in our eyes, there are...

Plants, animals, or minerals found in nature bear almost every color imaginable. There are two factors that influence what hues you see in the wild: physics and evolution. So, which colors are you least likely to see in the natural...

The mythical green flash at sunset isn't actually a myth! Stefan explains why it happens, and how you can see it.

People ask Google everything under the sun. One of the most commonly searched questions in the world is “Why Is the Sky Blue?” Allow us at SciShow to explain.

There is No Pink Light

Why isn't the sky violet?

Plants need sunlight to live, but they also need to block the sun's more harmful rays. Plants can't put on sunscreen or find shade, so how do they avoid getting a gnarly sunburn?

Why is the sky blue? It's a question that you'd think kids have been asking for thousands of years, but it might not be that old at all. The ancient Greek poet Homer never used a word for blue in The Odyssey or The Iliad, because blue is...

This is Not a Rainbow

In order to understand how we study the universe, we need to talk a little bit about light. Light is a form of energy. Its wavelength tells us its energy and color. Spectroscopy allows us to analyze those colors and determine an object’s...

From corundum to alexandrite, there are rare minerals have multi-colors caused by how they form their structure!<br/>

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...

Goats, especially baby goats, bring so much happiness to the world. The Catskill Animal Sanctuary rescues farm animals from a variety of bad circumstances. After one of their biggest rescues last October, they have welcomed a heard...

Howcast - Learn how to make flavored homemade marshmallows in this Howcast food video featuring pastry chef Katie Rosenhouse, part two of a two-part series.

Gram staining is a differential staining method that classifies bacteria as Gram-positive (purple) or Gram-negative (red) based on their cell wall structure and composition. Gram-positive bacteria retain crystal violet due to a thick,...

This video provides an overview of the fascinating world of pigeons, highlighting a few of the 370 species that exist worldwide. From the common pigeon found in cities around the world to the endangered black naped Pheasant Pigeon of...

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...

While the sun seems yellow to you from childhood, in reality, it is white. The reason why the sun appears yellow is because of the Earth’s atmosphere. When sunlight hits atmospheric particles, it causes electrons and protons to vibrate...

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...

Discover how different wavelengths allow scientists to measure the distance to the stars.
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Open a discussion on what has been already...

What is it in our blood that makes it red, and why are other animals different? Biology - Human Body - Learning Points. Haemoglobin is the most efficient oxygen carrier and provides the red pigment in blood. Not all animals have red...

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...