Newton scale

From Free net encyclopedia

**Newton degree temperature conversion formulas**
Conversion from	to	Formula
kelvin	degrees Newton	°N = (K − 273.15) · 33/100
degrees Newton	kelvin	K = (°N · 100/33) + 273.15
degrees Celsius	degrees Newton	°N = °C · 33/100
degrees Newton	degrees Celsius	°C = °N · 100/33
degrees Fahrenheit	degrees Newton	°N = (°F − 32) · 11/60
degrees Newton	degrees Fahrenheit	°F = °N · 60/11 + 32
Note that for temperature intervals rather than temperature readings, 1 °N = 100/33 K and 1 °N = 60/11 °F Additional conversion formulas

The Newton scale is a temperature scale devised by Isaac Newton around 1700. Applying his mind to the problem of heat, he elaborated a first qualitative temperature scale, comprising about twenty reference points ranging from "cold air in winter" to "glowing coals in the kitchen fire". This approach was rather crude and problematical, so Newton quickly became dissatisfied with it. He knew that most substances expand when heated, so he took a container of linseed oil and measured its change of volume against his reference points. He found that the volume of linseed oil grew by 7.25% when heated from the temperature of melting snow to that of boiling water.

After a while, he defined the "zeroth degree of heat" as melting snow and "33 degrees of heat" as boiling water. He called his instrument a "thermometer".

Thus the unit of this scale, the Newton degree, equals <math>\frac{100}{33}</math> of a kelvin (or of a degree Celsius) and has the same zero as the Celsius scale.

[edit]