Who Invented Ultrasound And When

Ian Donald Invented Ultrasound Ultrasound was Invented in 1956 Ultrasound is sound waves with frequencies higher than the upper audible limit of human hearing. Ultrasound is no different from ‘normal’ sound in its physical properties, except in that humans cannot hear it.

Who Invented U-boats In World War 1 And When

Early U-boats (1850–1914) The first submarine built in Germany, the three-man Brandtaucher, sank to the bottom of Kiel harbor on 1 February 1851 during a test dive. The inventor and engineer Wilhelm Bauerhad designed this vessel in 1850, and Schweffel & Howaldt constructed it in Kiel.

Who Invented Microscope And When

Zacharias Jansen Invented Microscope Microscope was invented during the 1590’s Microscope is an optical instrument used for viewing very small objects, such as mineral samples or animal or plant cells, typically magnified several hundred times.