(n.) The science which treats of the laws and properties of matter and energy\; especially, that department of natural science which treats of the causes (as gravitation, heat, light, magnetism, electricity, etc.) that modify the general properties of bodies; natural philosophy.

Newtonian physics acoustical engineer acoustician aerophysics applied physics astrophysics basic conductor physics biophysics chemical physics cryogenics crystallography cytophysics electron physics electronics electrophysics geophysics macrophysics mathematical physics mechanics medicophysics microphysics natural philosophy natural science nuclear physics optics philosophy phonics physic physical chemistry physical science physicochemistry physicomathematics physics psychophysics radiation physics radioacoustics radionics solar physics solid-state physics statics stereophysics theoretical physics thermodynamics zoophysics