Biophysics

Biophysics, branch of biology in which the methods and principles of physics are applied to the study of living things. It has grown up in the 20th century alongside the development of electronics. Its tools include the electroencephalograph and the electron microscope. Its techniques include those of spectroscopy and X-ray diffraction. Its field of study deals with such questions as nerve transmission, bioluminescence, and materials transfer in respiration and secretion.

See also: Biology; Physics.