›› Convert degree Fahrenheit to degree Delisle


degree Fahrenheit
Delisle

›› More information from the unit converter

How many degree Fahrenheit in 1 Delisle? The answer is -1.2.
We assume you are converting between degree Fahrenheit and degree Delisle.
You can view more details on each measurement unit:
degree Fahrenheit or Delisle
The SI base unit for temperature is the kelvin.
1 kelvin is equal to 1.8 degree Fahrenheit, or -1.5 Delisle.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between degrees Fahrenheit and degrees Delisle.
Type in your own numbers in the form to convert the units!


›› Want other units?

You can do the reverse unit conversion from Delisle to degree Fahrenheit, or enter any two units below:

Enter two units to convert

From:
To:
 

›› Common temperature conversions

degree Fahrenheit to Romer
degree Fahrenheit to kelvin
degree Fahrenheit to Reaumur
degree Fahrenheit to newton
degree Fahrenheit to Rankine
degree Fahrenheit to Celsius


›› Definition: Fahrenheit

Fahrenheit is a temperature scale named after the German physicist Gabriel Fahrenheit (1686–1736), who proposed it in 1724.


›› Definition: Delisle

The Delisle scale 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).

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.

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.

Thus, the unit of this scale, the Delisle degree (sometimes spelled de Lisle), is -2/3 of a kelvin (or a degree Celsius) and absolute zero is at 559.725 Delisle degrees.


›› Metric conversions and more

ConvertUnits.com provides an online conversion calculator for all types of measurement units. You can find metric conversion tables for SI units, as well as English units, currency, and other data. Type in unit symbols, abbreviations, or full names for units of length, area, mass, pressure, and other types. Examples include mm, inch, 100 kg, US fluid ounce, 6'3", 10 stone 4, cubic cm, metres squared, grams, moles, feet per second, and many more!