The Rømer and Delisle scales are historical temperature scales, offering fascinating glimpses into the early days of scientific measurement. While less common today, understanding their conversions can be valuable for historical research, scientific data analysis, and expanding your knowledge of temperature scales.
The Rømer scale was developed by Danish astronomer Ole Rmer in 1701. It's a descending scale where the freezing point of brine (a mixture of salt and water) is 0°Rø, and the boiling point of water is 60°Rø.
The Delisle scale, invented by French astronomer Joseph-Nicolas Delisle in 1732, is also a descending scale. On this scale, the boiling point of water is 0°D, and the freezing point of water is 150°D.
The formula to convert Rmer to Delisle is:
**Delisle (°D) = (7.5 - Rømer (Rø)) * (25/2)**
To simplify the conversion process, we've created a user-friendly online calculator:
**[Insert a link to your online Rømer to Delisle conversion calculator here]**
Simply input the temperature in Rømer degrees (°Rø) into the calculator, and it will instantly display the equivalent temperature in Delisle degrees (°D).
Let's say you have a temperature of 20°Rø. To convert this to Delisle:
Rømer | Delisle | Rømer | Delisle | Rømer | Delisle | Rømer | Delisle |
---|---|---|---|---|---|---|---|
1°Rø | 168.57°De | 21°Rø | 111.43°De | 41°Rø | 54.29°De | 61°Rø | -2.86°De |
2°Rø | 165.71°De | 22°Rø | 108.57°De | 42°Rø | 51.43°De | 62°Rø | -5.71°De |
3°Rø | 162.86°De | 23°Rø | 105.71°De | 43°Rø | 48.57°De | 63°Rø | -8.57°De |
4°Rø | 160.00°De | 24°Rø | 102.86°De | 44°Rø | 45.71°De | 64°Rø | -11.43°De |
5°Rø | 157.14°De | 25°R | 100.00°De | 45°Rø | 42.86°De | 65°Rø | -14.29°De |
6°Rø | 154.29°De | 26Rø | 97.14°De | 46°Rø | 40.00°De | 66°Rø | -17.14°De |
7°Rø | 151.43°De | 27°Rø | 94.29°De | 47°Rø | 37.14°De | 67°Rø | -20.00°De |
8°Rø | 148.57°De | 28°Rø | 91.43°De | 48°Rø | 34.29°De | 68Rø | -22.86°De |
9°Rø | 145.71°De | 29°Rø | 88.57°De | 49°Rø | 31.43°De | 69°Rø | -25.71°De |
10°Rø | 142.86°De | 30°Rø | 85.71°De | 50°Rø | 28.57°De | 70°Rø | -28.57°De |
11°R | 140.00°De | 31°Rø | 82.86°De | 51°Rø | 25.71°De | 71°Rø | -31.43°De |
12Rø | 137.14°De | 32°Rø | 80.00°De | 52°R | 22.86°De | 72°Rø | -34.29°De |
13°Rø | 134.29°De | 33°Rø | 77.14°De | 53Rø | 20.00°De | 73°Rø | -37.14°De |
14°Rø | 131.43°De | 34°Rø | 74.29°De | 54°Rø | 17.14°De | 74°Rø | -40.00°De |
15°Rø | 128.57°De | 35°Rø | 71.43°De | 55°Rø | 14.29°De | 75°Rø | -42.86°De |
16°Rø | 125.71De | 36°Rø | 68.57°De | 56°Rø | 11.43°De | 76°Rø | -45.71°De |
17°Rø | 122.86°De | 37°Rø | 65.71°De | 57°Rø | 8.57°De | 77°Rø | -48.57°De |
18°Rø | 120.00°De | 38Rø | 62.86°De | 58°Rø | 5.71De | 78°Rø | -51.43°De |
19°Rø | 117.14°De | 39°Rø | 60.00°De | 59°Rø | 2.86°De | 79°R | -54.29°De |
20°Rø | 114.29°De | 40°Rø | 57.14°De | 60°Rø | 0.00°De | 80°Rø | -57.14°De |