- astropy.units.physical.def_physical_type(unit, name)[source]¶
Add a mapping between a unit and the corresponding physical type(s).
If a physical type already exists for a unit, add new physical type names so long as those names are not already in use for other physical types.
If a physical type name is already in use for another unit, or if attempting to name a unit as
For a list of physical types, see