Sequencing chip, by Oxford Nanopore Technologies Ltd. UK c.2010. Oxford Nanopore sequencing chip circa 2010
Diagram showing the variation of frequency and wavelength of characteristic X-rays from various elements 1950
Model locomotive valve gear, conjugated valve gear for Gresley 3-cylinder locomotives, by H Tully, Oxford, ex Selby Locomotive Shed MIC, c 1925. Model of Locomotive Valve Gear 1920-1930