K, not °K

It is simply measured in Kelvin.

Kelvin is the standard unit for temperature, 0 Kelvin is the absolute zero point. Each step is the same size as a degree Celsius, but there are no "degrees".

Edit: remove assertion that the scale does not go into negative, because physics.

As a non-native reader, I`m not sure that I understand. Could you explain why 100 Kelvin, but 100 degrees Celsius and 100 degrees Fahrenheit? Is there some special meaning in a word "degrees" there?

Earlier comment - https://news.ycombinator.com/item?id=36584908