Jonathan Zenneck
![Zenneck in 1951](https://upload.wikimedia.org/wikipedia/commons/c/c4/ZenneckJ1951.jpg)
Zenneck improved the Braun cathode ray tube by adding a second deflection structure at right angles to the first, which allowed two-dimensional viewing of a waveform. This two-dimensional display is fundamental to the oscilloscope. Provided by Wikipedia
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Published: [2019]
Superior document: Title is part of eBook package: De Gruyter DGBA Literary and Cultural Studies - <1990
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