Changes

* It is perfectly correct, though rather unusual in practice, to use metric prefixes with the degree Celsius. Thus one can say 'the melting point of the metal is in excess of 2 k°C'

* It is perfectly correct, though rather unusual in practice, to use metric prefixes with the degree Celsius. Thus one can say 'the melting point of the metal is in excess of 2 k°C'

* While one does not say '200 degrees Kelvin' one ''does'' say '200 degrees Celsius'  

* While one does not say '200 degrees Kelvin' one ''does'' say '200 degrees Celsius'  

* Prior to 1960 the degree Celsius was known as the degree Centigrade, a term that is now depracated.

* Prior to 1960 the degree Celsius was known as the degree Centigrade, a term that is now deprecated.

=== Radioactivity, Radiation, Health Physics, and Radiation Safety ===

=== Radioactivity, Radiation, Health Physics, and Radiation Safety ===