Toss a pebble in a pond -see the ripples? Now drop two pebbles close together. Look at what happens when the two sets of waves combine -you get a new wave! When a crest and a trough meet, they cancel out and the water goes flat. When two crests meet, they produce one, bigger crest. When two troughs collide, they make a single, deeper trough. Believe it or not, you've just found a key to understanding how a hologram works. But what do waves in a pond have to do with those amazing three- dimensional pictures? How do waves make a hologram look like the real thing? It all starts with light. Without it, you can't see. And much like the ripples in a pond, light travels in waves. When you look at, say, an apple, what you really see are the waves of light reflected from it. Your two eyes each see a slightly different view of the apple. These different views tell you about the apple's depth -its form and where it sits in relation to other objects. Your brain processes this information so......

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Title: Holograms--Fact Or Fiction?
Approximate Word Count: 1061
Approximate Pages: 5 (250 words per double-spaced page)

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