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| View Original: | Background Illumination1937.jpg (1440x1218) | |||
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| Keywords: Background Illumination1937.jpg from the original publication <br /> a b represents the stage of the microscope in an inclined position; c a condensing lens placed below and on one side of the stage; d a lamp also placed below the stage and at some distance from it; the rays of light r r r' r emanating from the lamp are thrown obliquely upon the object e and only those that are refracted by the glass or by the object under examination will pass through the comound body to the eye some objects when viewed in this way will appear beautifully illuminated on a field of view that is nearly if not quite dark de Background Illumination für die Lichtmikroskopie nach J B Reade 1837 beschrieben von John Queckett 1855 Dieter Gerlach Geschichte der Mikroskopie Verlag Harry Deutsch Frankfurt am Main Germany 2009 ISBN 978-3-8171-1781-9 Accompanying CD-ROM Original Source John Queckett Practical Treatise on the Use of the Microscope 1855 page 195 in second edition Google Books version of the second edition 1855 http //books google de/books id sHOanQkmpRcC hl de pg PA195 v onepage q f false John Queckett 1855 PD-Art Dark-field microscopy | ||||
