Neuronal signaling. To support the general function of the nervous system, neurons have evolved unique capabilities for intracellular signaling (communication within the cell) and intercellular signaling (communication between cells).
Because of this, gyroscopes are useful for measuring or maintaining orientation. Invention History. The gyroscope was invented in 1852 by the French experimental physicist Leon Foucault (1819-1868) as part of a two-pronged investigation of the rotation of the earth.
How The Stethoscope Was Invented. Alex Santoso â¢ Sunday, February 7, 2010 at 4:51 PM â¢ 0. The stethoscope was invented by a doctor too embarrassed to place his ear on a woman's ample bosom. Before the invention of the stethoscope, a physician would listen to a patient's heart by placing his ear over the chest. In 1816, RenÃ© Laennec, a physician and devout Catholic, was called to examine a young woman suspected to have a diseased heart.