John Ambrose Fleming
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Sir John Ambrose Fleming was an English electrical engineer and physicist. He is known for inventing the first thermionic valve or vacuum tube, the diode, then called the kenotron in 1904. He also invented the right-hand rule, used in mathematics and electronics. He was born the eldest of seven children of James Fleming DD, a Congregational minister, and his wife, Mary Ann, at Lancaster, Lancashire and baptized on 11 February 1850. He was a devout Christian and preached on one occasion at St Martin-in-the-Fields in London on the topic of evidence for the resurrection. In 1932, along with…mehr

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Sir John Ambrose Fleming was an English electrical engineer and physicist. He is known for inventing the first thermionic valve or vacuum tube, the diode, then called the kenotron in 1904. He also invented the right-hand rule, used in mathematics and electronics. He was born the eldest of seven children of James Fleming DD, a Congregational minister, and his wife, Mary Ann, at Lancaster, Lancashire and baptized on 11 February 1850. He was a devout Christian and preached on one occasion at St Martin-in-the-Fields in London on the topic of evidence for the resurrection. In 1932, along with Douglas Dewar and Bernard Acworth, he helped establish the Evolution Protest Movement. Having no children, he bequeathed much of his estate to Christian charities, especially those that helped the poor. He was an accomplished photographer and, in addition, he painted watercolours and enjoyed climbing in the Alps.