Rømer to Rankine Conversion: A Comprehensive Guide

The Rømer and Rankine scales, though less common today, hold significant historical and scientific value. This guide delves into these unique temperature scales and provides a clear pathway for converting between them.

The Rømer Scale: A Historical Perspective

Developed by Danish astronomer Ole Rømer in 1701, the Rømer scale defines the freezing point of brine (saltwater) as 0°Rø and the boiling point of water as 60°Rø. This historical scale offers a glimpse into early temperature measurement techniques.

The Rankine Scale: An Absolute Perspective

The Rankine scale, named after Scottish engineer William John Macquorn Rankine, is an absolute temperature scale. Unlike relative scales like Celsius and Fahrenheit, Rankine begins at absolute zero – the theoretical point where all molecular motion ceases. Notably, Rankine is an absolute scale based on the Fahrenheit degree, with its zero point aligned with absolute zero.

Rømer to Rankine Conversion: A Step-by-Step Guide

Converting between Rømer and Rankine requires a two-step process:

1. Convert Rømer to Fahrenheit:
• Fahrenheit (°F) = (Rømer (°Rø) * (21/4)) - 7.5
2. Convert Fahrenheit to Rankine:
• Rankine (°R) = Fahrenheit (°F) + 459.67

By following these steps, you can accurately translate temperatures between the Rømer and Rankine scales.

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