Here is a list of all documented namespace variables with links to the namespaces they belong to:

kavagadro : musica_constants
kconvertcharlength : musica_string
kerrorfileid : musica_assert
kerrorid : musica_assert
kuniversalgasconstant : musica_constants
musica_dk : musica_constants
musica_lk : musica_constants
musica_rk : musica_constants