Réaumur to Newton Conversion Calculator: Free Online Tool
Convert degrees Réaumur to degrees Newton with our free online temperature converter.
Réaumur to Newton Calculator
How to Use the Calculator:
- Enter the value you want to convert in the 'From' field (Réaumur).
- The converted value in Newton will appear automatically in the 'To' field.
- Use the dropdown menus to select different units within the Temperature category.
- Click the swap button (⇌) to reverse the conversion direction.
How to Convert Réaumur to Newton
Temperature conversions like Réaumur to Newton use specific non-linear formulas.
Formula:
First convert °Ré to °C: °C = °Ré × 5/4. Then convert °C to °N: °N = °C × 33/100Example Calculation:
Convert 10°Ré:
1. °C = 10 × 5/4 = 12.50°C
2. °N = 12.50 × 33/100 = 4.13°N
Disclaimer: For Reference Only
These conversion results are provided for informational purposes only. While we strive for accuracy, we make no guarantees regarding the precision of these results, especially for conversions involving extremely large or small numbers which may be subject to the inherent limitations of standard computer floating-point arithmetic.
Not for professional use. Results should be verified before use in any critical application. View our Terms of Service for more information.
What is a Réaumur and a Newton?
The Réaumur scale (°Ré, °Re, °R) is a temperature scale where the freezing point of water is 0 degrees and the boiling point is 80 degrees.
The Newton scale (°N) is a temperature scale devised by Isaac Newton around 1700. It sets the freezing point of water at 0 degrees Newton and the boiling point at 33 degrees Newton.
Note: The Réaumur is part of the imperial/US customary system, primarily used in the US, UK, and Canada for everyday measurements. The Newton belongs to the imperial/US customary system.
History of the Réaumur and Newton
Developed by René Antoine Ferchault de Réaumur in 1730, it was based on the expansion of alcohol. He marked the freezing point as 0 and the boiling point of the alcohol solution as 80. It gained popularity in parts of Europe, particularly France and Germany, but has largely been replaced by Celsius.
Newton developed his scale for practical use, calling it the "thermometric degree." He defined it based on the freezing point of water (0 °N) and body temperature (around 12 °N). He later extrapolated it to the boiling point of water (33 °N). It was one of the precursors to the Celsius scale.
Common Uses for degrees Réaumur and degrees Newton
Explore the typical applications for both Réaumur (imperial/US) and Newton (imperial/US) to understand their common contexts.
Common Uses for degrees Réaumur
- Historical Context: Found in old scientific literature and historical documents.
- Specific Industries: Occasionally used in some specific contexts, such as cheesemaking in Italy (for Parmigiano-Reggiano) or for measuring sugar syrup temperature in some Dutch cooking.
Common Uses for degrees Newton
- Historical Significance: Primarily of historical interest in the development of thermometry.
- Not used in modern scientific or general applications.
Frequently Asked Questions
Questions About Réaumur (°Ré)
What are the freezing and boiling points of water in Réaumur?
Water freezes at 0 °Ré and boils at 80 °Ré.
How does Réaumur relate to Celsius?
The Réaumur degree is larger than the Celsius degree. The formula is °Ré = °C × 4/5.
Is the Réaumur scale still commonly used?
No, it is rarely used today, having been largely superseded by the Celsius scale.
About Newton (°N)
What are the freezing and boiling points of water in Newton?
Water freezes at 0 °N and boils at 33 °N.
How does the Newton scale relate to Celsius?
The Newton degree is much larger than the Celsius degree. The formula is °N = °C × 33/100.
Did Newton use mercury thermometers?
Newton didn't use mercury; his early work involved linseed oil thermometers. The scale defines temperature points rather than the substance used in the thermometer.