The force of a suction cup is calculated using F=AP.
15
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
The gas that gives rotten eggs their distinctive foul smell may slow ageing and block damaging chemical reactions inside cells, according to scientists in China.
5
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
Neanderthal man had a brain capacity 100cc larger than modern man's.
50
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
A cesium atom in an atomic clock beats over nine billion times a second.
43
In zero gravity, a candle's flame is round and blue.
16