EVERYDAY SCIENCE

Detailed explanation-1: -It was Ernst Ruska and Max Knoll, a physicist and an electrical engineer, respectively, from the University of Berlin, who created the first electron microscope in 1931. This prototype was able to produce a magnification of four-hundred-power and was the first device to show what was possible with electron microscopy.

Detailed explanation-2: -Knoll and Ruska discovered electron microscope.

Detailed explanation-3: -Ernst Ruska discovered that a magnetic coil could be used as a lens for electron beams and developed the first electron microscope in 1933.

Detailed explanation-4: -Knoll was born in Wiesbaden and studied in Munich and at the Technical University of Berlin, where he obtained his doctorate in the Institute for High Voltage Technology. In 1927 he became the leader of the electron research group there, where he and his co-worker, Ernst Ruska, invented the electron microscope in 1931.