original intent was sqrt(foo) * |r|, but implemented as |sqrt(foo) * r|  (but not sqrt(sqrt(foo) * r) !!) instead just do  (sqrt(foo) * r * r), which is computationally easier anyway
original intent was
sqrt(foo) * |r|, but implemented as |sqrt(foo) * r|  (but not sqrt(sqrt(foo) * r) !!)
instead just do  (sqrt(foo) * r * r), which is computationally easier anyway

etomica/etomica,ajschult/etomica,etomica/etomica,ajschult/etomica,etomica/etomica,ajschult/etomica