A large bare floor is undoubtedly bad for acoustics, for when a room is filled by an audience the hearing is much improved.

His investigations occupied almost the whole field of science, including physiology, physiological optics, physiological acoustics, chemistry, mathematics, electricity and magnetism, meteorology and theoretical mechanics.

- FOr the history of experimental and theoretical acoustics see F.

The theory of proportion, and the study of acoustics and music were considerably advanced by his investigations.

ACOUSTICS (from the Gr.