Aerospace Medicine, branch of preventive medicine that is concerned with the physiological and psychological stresses on the human body in flight. The study of effects within the earth’s atmosphere is also called aviation medicine; beyond this atmosphere the study of effects is also called space medicine. Aerospace medicine was recognized as a subspecialty by the American Medical Association in 1953.
-
A stamp depicting the image of Hanaoka Seishu. Hanaoka Seishu (1760-1835), Japanese physician and pioneer of anesthetic surgery. Hanaok... -
In the N and W United States the era of mechanized agriculture began with the invention of such farm machines as the reaper, the cultivator,...
-
Fluid Mechanics, physical science dealing with the action of fluids at rest or in motion, and with applications and devices in engineering u...