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Telescopes
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Scientific instruments extend
the senses
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Telescopes, microscopes =
sight
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Radio, infrared, optical,
UV, X-ray, Gamma-ray
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microphones = sound
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thermometers, scales = touch...
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Telescopes work by:
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collecting light more efficiently
than our eye
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magnification (distant objects
look closer)
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Two basic types of telescopes:
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