File:Optical Communication Systems Photophone Receiver and Headset.jpg

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	21:03, 10 February 2012		300 × 200 (28 KB)	Beichner (talk \| contribs)
	20:55, 10 February 2012		300 × 200 (28 KB)	Beichner (talk \| contribs)

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