Revision history of "File:Mjb optical matrix.png"

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  • (cur | prev) 11:10, 16 February 2016‎ Matthew Butler (talk | contribs)‎ . . (231 bytes) (+231)‎ . . (Re-upload attempt 3: This Wiki doesn't appear to like JPGs! Photograph of the first revision of the 'optical matrix', a photoplethysmography recording system that utilises multiple light sources and sensors to map a region of skin.)
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