Technology and Invention

1535

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Clocks

The alarm clock rings in the morning and, even in your drowsy fog, you look to see what time it is. As you get dressed, you check the clock again and again to make sure you're not late for school. We …


3023

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Cold Remedies


1159

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Compact Discs

A hot debate rages today around the question of which has better sound, compact discs (CDs) or long-playing records (LPs). Both do a good job of reproducing sound. They differ, however, in the way the …


3025

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Computer Virus


3026

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Craig T. Nelson


3031

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Demolition Derby


3032

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Dentist Chair


3034

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Dollar Changer


907

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Domed Stadium

If you've ever done the "moon jump" at the fair or slept on an air mattress, then you know that fabric filled with air can support hundreds of kilograms of weight. This same principle is used at the …


3035

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Dweezil Zappa


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