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Holograms
Part 1 of Paper
....appens 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 understan.... Part 2 of Paper
....so you can
see the orange or even the back of the apple. If that seems a bit
obvious, just try looking behind something in a regular photograph!
You can't, because the photograph can't reproduce the infinitely complicated
waves of light reflected by objects; the lens of a camera can only focus those
waves into a flat, 2-D image. But a hologram can capture a 3-D image so
lifelike that you can look around the image of the apple to an orange in the
background -and it.... |
| Number of words: 1070 - Approximate pages: 4 |
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