Celsius to Rømer: A Historical Perspective

Delve into the fascinating world of early thermometry with our exploration of the Rømer scale, a pioneering temperature scale developed by Danish astronomer Ole Rømer in 1701.

The Rømer Scale: A Historical Landmark

Rømer's scale, predating both Celsius and Fahrenheit, holds a significant place in the history of temperature measurement. It was defined by two key points:

  • The freezing point of brine (a mixture of ice and salt) was set at 0°Rø.
  • The boiling point of water was established at 60°Rø.

Converting Celsius to Rømer: The Formula

To convert a temperature from Celsius to Rømer, utilize the following formula:

°Rø = (Celsius * 21/40) + 7.5

Why Explore this Historical Scale?

Understanding the Rømer scale offers valuable insights:

  • Gain Historical Context: Appreciate the early advancements in temperature measurement.
  • Broaden Your Perspective: Explore diverse approaches to defining and measuring temperature.
  • Build a Foundation: Gain a deeper understanding of other historical temperature scales.
Celsius Rømer Celsius Rømer Celsius Rømer Celsius Rømer
1°C8.03°Rø21C18.52°Rø41°C29.02°Rø61°C39.52°Rø
2°C8.55°Rø22°C19.05°Rø42°C29.55°Rø62°C40.05°Rø
3°C9.07°Rø23°C19.57°Rø43°C30.07°Rø63°C40.58°Rø
4°C9.60°Rø24°C20.10°Rø44°C30.60°Rø64°C41.10°Rø
5C10.13°Rø25°C20.63°Rø45°C31.13°Rø65°C41.63°Rø
6°C10.65°Rø26°C21.15°Rø46°C31.65°Rø66°C42.15°Rø
7°C11.18°Rø27°C21.68°Rø47°C32.17°Rø67°C42.67°Rø
8°C11.70°Rø28°C22.20°Rø48°C32.70°Rø68°C43.20°Rø
9°C12.22°Rø29°C22.73°Rø49°C33.23°Rø69°C43.73°Rø
10°C12.75°Rø30°C23.25°Rø50°C33.75°Rø70°C44.25°Rø
11°C13.28°Rø31°C23.77°Rø51°C34.27°Rø71°C44.77°Rø
12°C13.80°Rø32°C24.30°Rø52°C34.80°Rø72°C45.30°Rø
13°C14.32°Rø33°C24.82°Rø53°C35.33°Rø73°C45.83°Rø
14°C14.85°Rø34°C25.35°Rø54°C35.85°Rø74°C46.35°Rø
15°C15.38°Rø35°C25.88°Rø55°C36.38°Rø75°C46.88°Rø
16°C15.90°Rø36°C26.40°Rø56°C36.90°Rø76°C47.40°Rø
17°C16.43°Rø37°C26.93°Rø57°C37.42°Rø77°C47.92°Rø
18°C16.95°Rø38°C27.45°Rø58°C37.95Rø78°C48.45°Rø
19°C17.48°Rø39°C27.98°Rø59°C38.48°R79°C48.98°Rø
20°C18.00Rø40°C28.50°Rø60°C39.00°Rø80°C49.50°Rø