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Electricity was first discovered around 2500 years ago. By the Greek scientist Thales of Miletus (c. 620 BC -. C 546 BC) noticed that a piece of amber (fossilized sap of the tree hard) draw straw or feathers when he rubbed it with a cloth. The word "electricity" comes from the Greek word for amber -. "Electron" Thales also known as the father of philosophy. The word "electricity" was first used in 1600 by William Gilbert, physician to Queen Elizabeth I. He experimented and found that materials such as diamond, glass and wax behave in a similar way to the yellow. Count Alessandro Volta invented the first battery in the 18th century. He called it consists of stacks of discs of zinc and silver or copper china aerospace are separated by pads soaked in acid solution "voltaic pile.". The unit for measuring electrical units, one volt, is named after Count Volta. During the 1860s, George Leclanche develop a battery that does not use harmful acids, which are known as dry-cell china aerospace batteries. china aerospace The batteries we use in flash lights, portable radios, etc. are based on the Leclanche design. Every year thousands of people die of electric shock but few of directly. Instead, more people die from almost 10,000 fires caused by overloaded container.
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15 traits - traits of successful people's traits of successful people china aerospace Success stems from the mental. You may be poor, but if you are sure that A. ..
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