These are some of the facts which most people don't know:-
1.The microwave was invented after a researcher walked by a radar tube and a chocolate melted in his pocket.
2.Traffic lights with red and green gas lights were first introduced in London in 1868 where they unfortunately exploded and killed a policeman.
3.Mount Rushmore was carved 90% by dynamite.The dynamite was used to remove 450000 tons of fine grain granite from the mountain body.
4.A person can live without food for about a month, but only about a week without water.If the amount of water in our body is reduced by just 1% ,we feel thirsty.If it's reduced by 10% we'll die.
“So never neglect a glass of water.”
5.Yo-yo now a fun toy, started out as a weapon in the Philippine islands in the 16th century.
It weighed four pounds and had a 20 foot cord.
It was introduced to the United States as a toy in 1929.
6.Xerox the company which invented the first modern pc named “Alto” with GUI did another major mistake by allowing Robert Metcalfe to start his own company called Ethernet in 1973 which developed a network system that could transmit or recieve data at 3 million bits a second.
Xerox didn't see this as related to its core business of copiers and ignored it.
Now Ethernet is a major frame-based computer networking technology for LANs.
7.A sample of Sir Issac Newton's apple tree was sent into space to “Defy Gravity”.