171. Fact

If you stretch a standard slinky out flat it measures 87 feet long.

172. Fact

The microwave was invented after a researcher walked by a radar tube and a chocolate bar melted in his pocket.

173. Fact

Super glue was invented by accident the researcher was trying to make optical coating materials, n would test their properties by putting dem between 2 prisms and shining light through dem when he tried cyano-acrylate, he couldn't get the prisms apart.

174. Fact

No matter its size or thickness, no piece of paper can be folded in half more than 7 times.

175. Fact

A car traveling at 80 km/h uses half its fuel to overcome wind resistance.

176. Fact

Knowledge is growing so fast that ninety per cent of what we will know in fifty years time, will be discovered in those fifty years.

177. Fact

According to an old english system of time units, a moment is one and a half minutes.

178. Fact

The typewriter was invented in 1829, and the automatic dishwasher in 1889.

179. Fact

The wristwatch was invented in 1904 by louis cartier.

180. Fact

When glass breaks, the cracks move at speeds of up to 3,000 miles per hour.

181. Fact

Ten minutes of one hurricane contains enough energy to match the nuclear stockpiles of the world.

182. Fact

Most gemstones contain several elements. The exception? The diamond. It's all carbon.

183. Fact

Diamonds are the hardest substance known to man.

184. Fact

Which of the 50 states has never had an earthquake? North dakota.

185. Fact

When hydrogen burns in the air, water is formed.

186. Fact

Sterling silver contains 7.5% copper.

187. Fact

Cars were first made with ignition keys in 1949.

188. Fact

J.b dunlop was first to put air into tires.

189. Fact

Alexander graham bell, who invented the telephone, also set a world water-speed record of over seventy miles an hour at the age of seventy two.

190. Fact

It is energy-efficient to turn off a fluorescent light only if it will not be used again within an hour or more. This is because of the high voltage needed to turn it on, and the shortened life this high voltage causes.

Fact
Slaves under the last emperors of China wore pigtails so they could be picked out quickly      .. More >>