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A genealogy of the Selwyn family
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 1800 - 1800 (0 years)
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Date |
Event(s) |
| 1 | 1800 | - 1800—1800: Electric light first produced by Sir Humphrey Davy
- 1800—1800: Use of high pressure steam pioneered by Richard Trevithick (1771-1833)
- 1800—1800: Royal College of Surgeons founded
- 1800—1800: Herschel discovers infra-red light
- 1800—1800: Volta makes first electrical battery
- 2 Jul 1800—2 Jul 1800: Parliamentary union of Great Britain and Ireland
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