Convert Réaumur (°Ré) to Delisle (°De)

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Conversion:

1 Réaumur (°Ré) = 148.125 Delisle (°De)

How to Convert Réaumur (°Ré) to Delisle (°De)

1 re = 148.125 de

1 de = 79.466666667 re

Example: convert 15 Réaumur (°Ré) to Delisle (°De):

25 re = 103.125 de

Réaumur (°Ré) to Delisle (°De) Conversion Table

Réaumur (°Ré)Delisle (°De)
0.01 re149.98125 de
0.1 re149.8125 de
1 re148.125 de
2 re146.25 de
3 re144.375 de
5 re140.625 de
10 re131.25 de
20 re112.5 de
50 re56.25 de
100 re-37.5 de
1000 re-1725 de

Réaumur (°Ré)

Definition

Réaumur (°Ré) is a temperature scale where 0°Ré equals the freezing point of water and 80°Ré equals the boiling point of water.

History

The Réaumur scale was proposed in 1730 by René Antoine Ferchault de Réaumur, a French scientist. It was widely used across Europe, particularly in France, Germany, and Russia, until the late 19th century.

Current use

The Réaumur scale is nearly obsolete but still occasionally referenced in European cheese-making and some Italian candy-making traditions. It also appears in historical scientific texts.

Delisle (°De)

Definition

Delisle (°De) is an inverted temperature scale where 0°De equals the boiling point of water and 150°De equals the freezing point. Higher values indicate colder temperatures.

History

The Delisle scale was invented in 1732 by Joseph-Nicolas Delisle, a French astronomer. It was used in Russia for nearly a century before being replaced by the Celsius and Réaumur scales.

Current use

The Delisle scale is no longer used in everyday practice. It appears in historical scientific literature and is of interest in the study of the history of thermometry and temperature measurement.