![]() Born in Igelshieb, Thuringen and descended from a long line of craftsmen in the Thüringer Wald and in Böhmen, Geissler had worked as an instrument maker with his brothers throughout Germany and the Netherlands for many years. The history of cathode ray tube can be followed back to at least 1854 when the skilled German glassblower and mechanic Johann Heinrich Wilhelm Geißler - also known as Heinrich Geissler - was asked to design an apparatus for evacuating a glass tube by Julius Plücker, the professor of mathematics and physics at Universität Bonn (University of Bonn). This puts a serious limit on the size and the shape of a CRT display, which explains why LCD and LED eventually left CRT in the dust. ![]()
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