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File:330-PS-2273 (USN 708389) (17972269618).jpg

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Description 330-PS-2273 (USN 708389): Barber Shop Lather Dispenser Solves Polishing Problem. Mr. Stewart I. Slawson, Naval Research Laboratory Scientist, demonstrates the use of the familiar barber shop lather dispenser in polishing soft crystals of the type used to transmit invisible light rays and heat. Extensive tests disclosed that the lather floats away metal powders used in grinding and polishes and adds a polishing effect of its own. Liquid soap and the lather of the type mixed in shaving mug will not do the same work, according to the scientists. Photograph released October 17, 1951. (5/26/2015).
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Source 330-PS-2273 (USN 708389)
Author National Museum of the U.S. Navy

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This image was originally posted to Flickr by Photograph Curator at https://flickr.com/photos/127906254@N06/17972269618 (archive). It was reviewed on 10 July 2018 by FlickreviewR 2 and was confirmed to be licensed under the terms of the Public Domain Mark.

10 July 2018

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This file is a work of a sailor or employee of the U.S. Navy, taken or made as part of that person's official duties. As a work of the U.S. federal government, it is in the public domain in the United States.
This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights.

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current05:21, 10 July 2018Thumbnail for version as of 05:21, 10 July 20182,184 × 2,830 (426 KB)Hiàn (alt) (talk | contribs)Transferred from Flickr via #flickr2commons

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