Revision history of "File:Mjb desktop optical matrix.jpg"

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  • (cur | prev) 16:09, 28 January 2016Matthew Butler (talk | contribs). . (198 bytes) (+198). . (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. (Matthew Butler, 28/01/16))