Color of dinosaurs

Scientists aren't sure what color dinosaurs were.




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Speed of Radio Waves

Radio waves travel so much faster than sound waves that a broadcast voice can be heard sooner 18,000 km away than in the back of the room in which it originated.

Gas used in lights

Argon is used to fill the space in most light bulbs. Neon is used in fluorescent signs. Fluorescent lights are filled with mercury gas.

The smallest transistor

The smallest transistor is 50-nanometres wide - roughly 1/2000 the width of a human hair.

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