Light! How do we see? What makes light? Find out everything you need to know through the Q&As on this site.

Sun tanning has a bad rap right now. Use a personal ultraviolet monitor to measure the UV index to prevent getting a sunburn. With this science fair project you will create a chart showing the UV ray measurement at different times of the...

What is light? A detailed examination of what creates light, light spectrums, scientists' discoveries, and colored graphics. Appropriate for the older student or adult researcher.

Is that right side of your brain yearning to express its artistic side? This is a project that blends art with science. Learn about light and colorful shadows in these experiments where you mix and match various colors of light to create...

How far would you have to travel so that the light of the full sun would provide "daylight" no brighter than twilight on Earth? This project describes a method to verify the inverse square law: how light, sound, electrical signals, and...

Explore bending of light between two media with different indices of refraction. See how changing from air to water to glass changes the bending angle. Play with prisms of different shapes and make rainbows.

This tutorial reviews over the properties of light. Students will learn about reflection and refraction through videos, questions, and interactive activities.

This comprehensive article describes millions of years worth of the history of light and lighting.

A collection of tutorials and interactive resources, from basic to advanced, that explain concepts related to the science of light.

What is light pollution and why should we care about it? Learn what it is, the different types, sources of this type of pollution, the impact it has, and ways to combat it.

You've probably heard that compact fluorescent light bulbs are more efficient than incandescent bulbs. More of the electricity they use goes into producing light, and less into producing heat than with incandescent bulbs. How much more...

Plants need air, water, soil, and light to grow. Students learn about plant growth and development by conducting an experiment that demonstrates the importance of light to plants.

Manipulate variables and measure angles as light is refracted in this interactive simulation.

In this experiment, you will measure the speed of light using a microwave oven, some egg white, and a ruler. This short project proves to be an extremely interesting choice for a science lab, with pictures for illustration, and thorough...

A detailed discussion of the nature of light, how it can travel through a vacuum, and how the speed of light is affected when light travels through a medium.

This tutorial explains light absorption, reflection and transmission in a clear and concise manner. Provides a "Check Your Understanding" section as well as additional links on color and light.

In this physics classroom, students learn how and why light of certain frequencies can be selectively absorbed, reflected or transmitted.

This resource provides a concise overview of the speed of light and the Ole Roemer, the first man to measure it.

Light is an example of an electromagnetic wave. Electromagnetic waves can travel through the vacuum of interstellar space. They do not depend on an external medium-unlike a mechanical wave such as a sound wave which must travel through...

Lesson explores where electricity comes from, how much it costs, and the amount of coal that is used. Young scholars will relate these concepts to how much coal is needed to light their school/classroom for one hour.

Rainbows and sunsets are called "atmospheric optics". They can be caused by light being absorbed, reflected, scattered, refracted, or diffracted by particles in the atmosphere. Learn all about different atmospheric optics along with...

Color theory I, "Color as Light", from artyfactory is an introduction to color theory in Art. This page provides an explanation with visual examples for help.

Visible light waves are the only electromagnetic waves we can see. We see these waves as the colors of the rainbow. Each color has a different wavelength. Red has the longest wavelength and violet has the shortest wavelength. When all...

Learn about light pollution, how it is created, and it's negative impact on astronomical observatories, in particular, the one on Palomar Mountain, California. From the Caltech astronomy department this is an informative look at the...