What Makes the Colors in a Rainbow?
After a shower of rain there is often a rainbow. Rainbows form when the sun begins to shine through the clouds while the air…
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How Do Microwave Ovens Work?
How Do Microwave Ovens Work? In a microwave oven, you can cook a hamburger in only four minutes. Conventional ovens cook food by heating air
How Does a Prism Produce Colors?
How Does a Prism Produce Colors? A prism is a piece of glass or other see-through material that has several flat sides, called faces. Many p
What Is a Laser?
Lasers are devices for amplifying (strengthening) light into a powerful beam—a beam that can be focused very sharply, to generate heat or
How Does an X-ray See Inside You?
The X-ray picture a doctor uses to see inside your body is really a shadow picture of your bones and organs. X-rays are a kind of invisible