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Back to parabolas...
Remember the parabolas we saw before? In
bridges... and paths of projectiles like when you throw a ball in the
air.
They have cool reflective properties too.
Check it out:
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This is why paraboloids are used as
satellite dishes and as the mirrors in telescopes.
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And check out these flood lights:
Can you see from the reflective properties who
paraboloids would make great flood lights? (Compare this to the
ellipsoidal spot lights.)
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