Tour of the electromagnetic spectrum

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Summary

"Electromagnetism is all around us and is essential to the world in which we live. We rely on electromagnetic waves to heat our food, carry cell phone calls, and even bring music to the radios in o...

"Electromagnetism is all around us and is essential to the world in which we live. We rely on electromagnetic waves to heat our food, carry cell phone calls, and even bring music to the radios in our cars. But how does NASA sense this energy to study vegetation on Earth, monitor solar eruptions on the Sun, or detect elements on another planet? This DVD offers an excellent supplement to any curriculum involving the electromagnetic spectrum."--Container.

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