A system for rapid production of photogr
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F.M. Brown; L.L. Blackmer; C.J. Kunz
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Article
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1946
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Elsevier Science
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English
โ 552 KB
In the land-based radar direction of aircraft it was found necessary-to transfer to a large plotting screen a lox magnification of the PPI cathode-ray tube face . An instrument was developed to do this photographically, with the projected image lagging only i5 seconds behind the latest information .