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.
Ada Lovelace (1815â1852) was a British mathematician whose work helped in the development of computers. She wrote algorithms (a way of solving problems by using a step-by-step mathematical method) for the Analytical Engine, a forerunner of modern computers. It was designed by Charles Babbage, a British inventor, but was never built in his lifetime