This week's experiment is one that I have been playing with for quite some time. It is something that I first noticed when I was a child in school. Way back then, we watched educational movies sometimes in class. There were no VCRs or video tapes. Instead, the film was on big reels and fed through a movie projector. When the movie was over, you would rewind the film back onto the reel, and as the reels were spinning quickly, you could see bands of yellow and blue light, like the spokes of a wheel on the reels. Since then, I have found several other ways to see these blue and yellow bands. For this demonstration, you will need:

This experiment is Subscriber Only content.

Subscribe Now, and get full access to this experiment, and hundreds of other experiments and videos.

This week's experiment uses a computer CD or DVD. If you have ever looked closely at either a music or computer CD, you have probably noticed that they produce rainbows. If you hold the CD with the shiny side up and let light from a lamp reflect off of it, you will see a very nice rainbow of colors. If you are using a regular incandescent bulb, you will see all of the colors of the rainbow: Red, orange, yellow, green, blue, indigo, violet. If you use other kinds of bulbs, you may find some colors missing. To try this, you will need:

This experiment is Subscriber Only content.

Subscribe Now, and get full access to this experiment, and hundreds of other experiments and videos.

This project has science fair potential.

This time our experiment is one that winds up in lots of science fair projects. Does color have an impact on how things absorb heat?

This experiment is Subscriber Only content.

Subscribe Now, and get full access to this experiment, and hundreds of other experiments and videos.

We are used to associating electricity with light bulbs, but most people expect it to take a lot of power to light them. For incandescent bulbs, that is true, but with fluorescents, things are a bit different.

This experiment is Subscriber Only content.

Subscribe Now, and get full access to this experiment, and hundreds of other experiments and videos.

This week's experiment uses fire, so be very careful and be sure that you have an adult to help you.

This week's experiment involves both chemistry and light. It is always pleasing for me to find one experiment that can send you exploring in several different directions.

This experiment is Subscriber Only content.

Subscribe Now, and get full access to this experiment, and hundreds of other experiments and videos.

For this week's experiment, we are going to watch our fingers wiggle. Doesn't that sound like fun? OK, I admit that I am easily amused, but there is more to this experiment than just moving your finger. We are going to investigate part of how a television works at the same time.

This experiment is Subscriber Only content.

Subscribe Now, and get full access to this experiment, and hundreds of other experiments and videos.

The experiment this week comes from spending too much time in hotel rooms as I travel. As I was packing for the trip home, I found it very useful for adjusting the television when I was not directly in front of it.

This experiment is Subscriber Only content.

Subscribe Now, and get full access to this experiment, and hundreds of other experiments and videos.

This project has science fair potential.

This experiment is from a Magic of Science workshop that I taught several years ago. No, it is not a get rich quick scheme. It is a fun way to see how we can bend a ray of light.

This experiment is Subscriber Only content.

Subscribe Now, and get full access to this experiment, and hundreds of other experiments and videos.

This is one of the classic questions that children ask, and one that many adults do not know the answer to. With this simple experiment we will answer the question, and also find out why sunsets are red.

This experiment is Subscriber Only content.

Subscribe Now, and get full access to this experiment, and hundreds of other experiments and videos.

This is Members Only content.

Become a Member Today at the Introductory Price of
Only $20 for an Entire Year, and get full access to this site.

Why does making something wet cause it to look darker?

This is Members Only content.

Become a Member Today at the Introductory Price of
Only $20 for an Entire Year, and get full access to this site.

This is Members Only content.

Become a Member Today at the Introductory Price of
Only $20 for an Entire Year, and get full access to this site.

Does your TV really only have three colors?

This is Members Only content.

Become a Member Today at the Introductory Price of
Only $20 for an Entire Year, and get full access to this site.

The amazing science of rainbows.

This is Members Only content.

Become a Member Today at the Introductory Price of
Only $20 for an Entire Year, and get full access to this site.

A simple experiment to show how photographs work.

This is Members Only content.

Become a Member Today at the Introductory Price of
Only $20 for an Entire Year, and get full access to this site.