You might be most familiar with sonography's role in the field of obstetrics to produce an ultrasound image of an unborn baby. Sonography is also used to analyze tissues and organs of the body, such as the heart, eyes and abdomen.
Etymology: Pierre S. de Laplace, French physicist, 1749-1827. a principle of physics that the tension on the wall of a sphere is the product of the pressure times the radius of the chamber and the tension is inversely related to the thickness of the wall.
Originally published in Creation 3, no 3 (August 1980): 29-32. PiÃ¨rre Simon Laplace is famous for his concept that the solar system formed from a spinning cloud of gas. His theory is the combined result of a manâs philosophy, religion, and skills as an observer of the skies. It is important in looking at the Nebular Hypothesis that we understand something of the background of Laplace. In 1749 PiÃ¨rre was born to a middle class family in Beaumont-en-Auge, France.