John Hadley (chemist)
John Hadley (1731 – 5 November 1764) was a British chemist and physician.
Born in London to Henry Hadley, he was educated at Queens College, Cambridge, graduating B.A. in 1753. [1]
In 1756 he was appointed the fourth Professor of Chemistry at Cambridge University, the oldest continuously occupied chair of Chemistry in the UK. During his time there he co-operated in 1758 with Benjamin Franklin on a series of experiments to investigate latent heat. They found that a mercury thermometer sprayed with ether which was then evaporated by blowing could fall to −7 degrees Celsius in a warm room.
The Professorship was unpaid so Hadley studied medicine and obtained in 1758 a Physick Fellowship. He then moved to London in 1760 and got a post as Assistant Physician at St Thomas' Hospital. In 1763 he became full Physician to Charterhouse School and became a Fellow of the Royal College of Physicians.
In 1758 he was elected as a Fellow of the Royal Society. He died in 1764 of a fever at the age of 33.
References[]
Wikisource has original works written by or about: John Hadley |
- ^ Biographical account of John Hadley ... and of his brothers, George and Henry. p. 32.
- L.J.M.Coleby Annals of Science, Vol VIII, pp 165–174
- 1731 births
- 1764 deaths
- Alumni of Queens' College, Cambridge
- Fellows of Queens' College, Cambridge
- Fellows of the Royal College of Physicians
- Fellows of the Royal Society
- Academics of the University of Cambridge
- British chemists
- 18th-century English medical doctors