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The Delisle scale (abbreviated "De" or "D") is a scale to measure temperature. It was introduced by French astronomer Joseph-Nicolas Delisle in 1732. Delisle used a thermometer that worked with Mercury. 0°De is equal to the boiling point of water under normal pressure. Delisle then measured the volume change of the mercury. At the start, the Delisle scale had 2400 degrees. Josias Weitbrecht recalibrated the theromometer in 1738, so that the melting point of ice was taken into account. Ice melts at 150°De. The Deslile scale counts downwards, from the boiling point to the melting point. It was widely used in Russia in the 19th century.
DelisleConversion table | ||
|---|---|---|
| 1 °De | = 99.333333333333 celsius (°C) | ⇛ |
| 1 °De | = 1 delisle (°De) | ⇛ |
| 1 °De | = 210.8 fahrenheit (°F) | ⇛ |
| 1 °De | = 372.48333333333 kelvin (K) | ⇛ |
| 1 °De | = 32.78 newton scale (°N) | ⇛ |
| 1 °De | = 670.47 rankine (°R) | ⇛ |
| 1 °De | = 79.466666666667 reaumur (°Re) | ⇛ |
| 1 °De | = 59.65 romer (°Rø) | ⇛ |