The life boat was patented in 1845!
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The ball on top of a flagpole is called a 'truck'.
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Kleenex tissues were originally used as filters in gas masks.
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The normal static electricty shock that zaps your finger when you touch a doorknob is usually between 10,000 and 30,000 volts!
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A small airplane can fly backwards.
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Any modern jet is capable of breaking the sound barrier.
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