constants

File Purpose: values of constants (e.g. kB)

(Be careful not to use ambiguous letters here which might be used for other values,

e.g. might want to avoid using ‘e’ to mean 2.728…
since ‘e’ might be used for a variable like energy density.
In those cases, can use a more descriptive name, e.g. ‘econst’ or ‘eulerconst’)

Classes

ConstantsLoader()

load values of constants (numbers which depend on, at most, self.units)