“The Celsius scale is not really ‘metric’ in the same practical way that, say, centimeters and kilometers are,” Pinder pointed out.

Object of precision The original Delisle thermometer that Celsius marked with his 100-degree scale. (Courtesy: Museum Gustavianum, photograph by Mikael Wallerstedt) On Christmas Day in 1741, when ...

If anything, the Fahrenheit scale may be more accurate than Celsius – or at least, more precise.Because there are nine degrees Fahrenheit for every five Celsius, the scale “has more degrees ...