The celcius was designed without regard to the temperature of absolute zero. Why does the exact value of absolute zero only have 2 decimal points in the celcius scale?

Question

Isn’t it quite a big coincidence that this value would only have 2 decimal points on a scale that puts the temperature value of water boiling and freezing at whole numbers?

In: Mathematics

Answer 1

This comes up any time a unit or scientific constant is redefined: you can pick an exact value as long as it is within the previous value’s imprecision. It won’t mess up previous uses if the change in value is less then the uncertainty in the value.