Gray (unit) Gray (unit) The gray (symbol: Gy) is a derived unit of ionizing radiation dose in the International System of Units (SI). It is defined as the absorption of one joule of radiation energy per kilogram of matter. It is used as a unit of the radiation quantity absorbed dose which measures the energy deposited in a unit mass at a certain position, and of the radiation quantity kerma, which is the amount of energy that is transferred from photons to electrons per unit mass at a certain position. The corresponding cgs unit to the gray is the rad (equivalent to
Modern Woman: The Lost Sex Modern Woman: The Lost Sex Modern Woman: The Lost Sex is a 1947 work of scientific literature written by Ferdinand Lundberg and Marynia F. Farnham, M.D. which discusses the sociological and psychological context of American women in the post World War II era. Lundberg, a sociologist and social historian, and Farnham, a psychiatrist affiliated with the New York State Psychiatric Institute and Hospital, argue that "contemporary women in very large numbers are psychologically disordered and that their disorder is having terrible social and personal effects involving men in all departments of their lives as well as women." This book became