Edgerton Lab Notebook 21, Page 40: April 19, 1952

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Page start date:

April 19, 1952

Content type:

notes

Transcription:

Apr 19 1952 Hoadley, [David] Owens and Hammond were here on Apr 15 Tuesday to discuss underwater photography. We concluded that a small tube was very desirable since the pressure resisting cover could be more easily designed. I suggested a quarty [?] straight tube of about 1 inch arc length. The diameter of about 1/4" was suggested, since we are all set with soldered seals for this size. Bill [MacRoberts] made two lamps of this size yesterday. One blew up on the pump when 200 watt seconds was discharged into it. The other was taken off the pump in the 140 cm Xenon gas. With 116 watt sec at 450 volts, the efficiency shows about 4.1 cp/watt. See notebook for further data. I plan to design the equipment around this tube and at this power. The capacitors will be 2" each in diameter plus the paper cover. I would say that a 4 1/8" inside diameter would be sufficient. D. H. Newby of the Redstone Arsenal was here on Apr 17 to discuss rocket measurements etc. He wants a shadow method with short exposure. A list of specs is being drawn up.

Keywords:

D. H. Newby; David Owens; Hammond; Hoadley; Redstone Arsenal; shadow photography; underwater photography

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