D.E.V.I.C.E. is an encyclopedia of terms used by manufacturers of test and measurement equipment. T&M Atlantic created this service to better explain the functionality of instruments it offers, and to highlight the latest developments in the world of measurement equipment. We are using such tools as animation to bring words and pictures to life and to create not just an understanding but also an appreciation for technology that goes into the design of every instrument.
D.E.V.I.C.E. on Request
If you are searching for a particular term or definition, please contact us and our engineers will be glad to explain it to you.
Ernst August Friedrich Ruska, the scientist who created the electron microscope, was born on December 25, 1906 in Berlin, Germany.
The prototype of the first electron microscope consisted of two consecutive magnetic lenses and it was demonstrated by Ruska on March 9, 1931. At four hundred times magnification this device was much less powerful than modern optical microscopes but it showed the fundamental possibility of using a solenoid as a lens for an electron beam which made it possible to obtain an enlarged image of the objects under study.
In 1933 Ruska built another version of the electron microscope, its resolution made it possible to determine details as large as 500 angstroms and this exceeded the capabilities of optical microscopes.
In 1937, as an electrical engineer at Siemens, he took part in the development of the world's first commercial mass electron microscope. This instrument with 100 angstroms resolution entered the market in 1939.