Beschreibung:

STEINMETZ, CHARLES ALS Charles Steinmetz (1865-1923) was a German born, American mathematician and electrical engineer who fostered the development of alternating current. He was a giant among scientific thinkers, counting Albert Einstein, Nikola Tesla and Thomas Edison as friends. Signed cardstock photograph, 220 x 254 mm, captioned "Mr. Steinmetz with Fragments of Tree Branch damaged by Lightning From Lightning Generator." Steinmetz is standing leaning across a stool holding a broken branch. A superb image depicting the famed engineer full length. Considering he was a dwarf, it is a splendid candid portrait. Signed across the white border, "Charles P. Steinmetz" An important image. With some toning and small paper loss to the right edge which is a result of previous mounting and some surface cracks. In 1893, the General Electric Company was formed and while working there, Steinmetz made one of his greatest contributions to the electrical engineering community, a lecture and presentation describing the mathematics of alternating current phenomena which had not previously been explained or grasped by earlier engineers. This enabled engineers to move from designing electric motors by trial and error to designing them with the aid of applicable mathematics to create on paper the best possible motor before actually constructing it. His impact on electrical engineering is immeasurable.