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He born in Padua, Venice. Bartolomeo, dissatisfied with the lack of control of the volume of the musicians, created the first piano in 1655. -
He was a mechanical egineer, born in Greenock. one day he recives a steam engine to repair and he saw it lost a lot of energy. He starts to desing a new engine and create the watt. -
In 1832 he was called to trial as a chemist since it was believed that the defendant had poisoned his grandfather. He made a mixture to prove it, but the killer was acquitted, so I created another one with sulfuric acid and zinc arsenic, getting a big arsenic detector -
He first experienced the effects of nitrogen oxide in 1844, when he volunteered for Gardner Quincy Colton to test on it. Wells felt nothing, and was the first patient treated under anesthesia when later that year his partner John Riggs extracted a tooth. Since then he began using it with his own patients. He did not attempt to patent the discovery because he declared that being free of pain should be "as free as air". -
After missing a train due to an error in time, Sandford proposed a universal schedule, taking the meridian as a central point. -
He was born in Edinburgh, but moved with his family to North America. He want to create something to help the deaf and through this work, so he invented the telephone -
He born in Ayrshireand moved to london to study medicine. In august 1928 he forgot sterilise his equipment. when he returns there no bacterias, and he discover the peniciline.