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John Henry Pepper : ウィキペディア英語版 | John Henry Pepper
John Henry "Professor" Pepper (17 June 1821 – 25 March 1900) was a British scientist and inventor who toured the English-speaking world with his scientific demonstrations. He entertained the public, royalty, and fellow scientists with a wide range of technological innovations. He is primarily remembered for developing the projection technique known as Pepper's ghost, building a large-scale version of the concept by Henry Dircks. He also oversaw the introduction of evening lectures at the Royal Polytechnic Institution (University of Westminster) and wrote several important science education books, one of which is regarded as a significant step towards the understanding of continental drift. While in Australia he tried unsuccessfully to make it rain using electrical conduction and large explosions. ==Early life== Pepper was born in Westminster, London and educated at King's College School. While there he became interested in chemistry, as taught by John Thomas Cooper. Cooper acted as a mentor to Pepper, who went on to become an assistant lecturer at the Grainger School of Medicine at the age of 19. In around 1843 he was elected a Fellow of the Chemical Society.
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