Born: 1920 Videotape recorder—After World War II audio tape recorders were run at very high speeds to record the very high frequency television signals. Ginsburg developed a new machine that ran…
(Encyclopedia) YegorevskYegorevskyĭgôˈryəfsk [key], city (1989 pop. 74,000), W central European Russia. It is a cotton-milling and textile center and also produces machine tools.
Born: 1926 Photocopying. Gundlach devoted over three decades to transforming photocopiers into small, robust products that revolutionized xerography. As the field advanced, Gundlach invented ways…
Born: 1872Birthplace: Sweden High frequency alternator—Alexanderson built a high frequency machine that would operate at high speeds and produce a continuous wave transmission. His inventions…
Born: 1876Birthplace: Angola, N.Y. Apparatus for treating air—Carrier developed the first safe, low pressure centrifugal refrigeration machine using non-toxic, nonflammable refrigerant. By…
Born: 1860Birthplace: Buffalo, N.Y. Art of compiling statistics—Hollerith invented a punch card tabulation machine system that revolutionized statistical computation. His system enabled the 1890…
Born: 1926Birthplace: New York City Diagnostic x-ray systems—Ledley developed the ACTA diagnostic x-ray scanner, the first whole-body computerized tomography (CT) machine. He was the first to do…
Born: Jan. 16, 1901Mechanic, ice salesman and skating rink owner in Paramount, Calif. invented 1st ice-resurfacing machine in 1949; now there are very few skating rinks without one as thousands…
Born: 1917Birthplace: New York City Bifurcated vaccination needle—Until 1967 smallpox killed at least 2 million people annually. In 1980 the World Health Organization declared that smallpox had…
