The Delisle scale (°D) is a temperature scale invented in 1732 by the French astronomer Joseph-Nicolas Delisle (1688–1768). It is similar to that of Réaumur. Delisle was the author of Mémoires pour servir à l'histoire et aux progrès de l'Astronomie, de la Géographie et de la Physique (1738). For other uses, see Celsius (disambiguation). ... For other uses, see Fahrenheit (disambiguation). ... For other uses, see Kelvin (disambiguation). ... For the idealized thermodynamic cycle for a steam engine, see Rankine cycle. ... // Comparison of temperature scales ¹ Normal human body temperature is 36. ... For other uses, see Temperature (disambiguation). ... Events February 23 - First performance of Handels Orlando, in London June 9 - James Oglethorpe is granted a royal charter for the colony of Georgia. ... Galileo is often referred to as the Father of Modern Astronomy. ... One of the 11 sons of Claude Delisle (1644–1720), Joseph-Nicolas Delisle was born in Paris on April 4, 1688. ... // Events A high-powered conspiracy of notables, the Immortal Seven, invite William and Mary to depose James II of England. ... 1768 was a leap year starting on Friday (see link for calendar). ... The degree Réaumur is a unit of temperature named after René Antoine Ferchault de Réaumur, who first proposed it in 1731. ... Events February 4 - Court Jew Joseph Suss Oppenheimer is executed in Württenberg April 15 - Premiere in London of Serse, an Italian opera by George Frideric Handel. ...

He had been invited to Russia by Peter the Great. In 1732 he built a thermometer that used mercury as a working fluid. Delisle chose his scale using the temperature of boiling water as the fixed zero point and measured the contraction of the mercury (with lower temperatures) in hundred-thousandths. The Celsius scale too originally ran from zero for boiling water down to 100 for freezing water. This was reversed to its modern order some time after his death, in part at the instigation of Daniel Ekström, the manufacturer of most of the thermometers used by Celsius. Peter the Great or Pyotr Alexeyevich Romanov (Russian: Пётр I Алексеевич Pyotr I Alekse`yevich, Пётр Великий Pyotr Veli`kiy) (9 June 1672 – 8 February 1725 [30 May 1672–28 January 1725 O.S.][1]) ruled Russia from 7 May (27 April O.S.) 1682 until his death, jointly ruling before 1696 with his... This article is about the element. ... For other uses, see Celsius (disambiguation). ...

The Delisle thermometers usually had 2400 graduations, appropriate to the winter in St. Petersburg. In 1738 Josias Weitbrecht (1702–1747) recalibrated the Delisle thermometer with 0 degrees as the boiling point and 150 degrees as the freezing point of water. The Delisle thermometer remained in use for almost 100 years in Russia. Saint Petersburg (Russian: Санкт-Петербу́рг, English transliteration: Sankt-Peterburg), colloquially known as Питер (transliterated Piter), formerly known as Leningrad (Ленингра́д, 1924–1991) and Petrograd (Петрогра́д, 1914–1924), is a city located in Northwestern Russia on the delta of the river Neva at the east end of the Gulf of Finland... Events February 4 - Court Jew Joseph Suss Oppenheimer is executed in Württenberg April 15 - Premiere in London of Serse, an Italian opera by George Frideric Handel. ... Events March 8 - William III died; Princess Anne Stuart becomes Queen Anne of England, Scotland and Ireland. ... Year 1747 (MDCCXLVII) was a common year starting on Sunday (link will display the full calendar) of the Gregorian calendar (or a common year starting on Thursday of the 11-day slower Julian calendar). ...

See also

• Comparison of temperature scales

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External links

• Photo of an antique thermometer backing board c. 1758—marked in four scales; the second is Delisle (spelled "de Lisle").