The microscope : its construction and management : including technique, photo-micrography, and the past and future of the microscope (1893)
Heurck, Henri van, 1838-1909 · London : C. Lockwood ; New York : D. Van Nostrand Co. · leaf 133
ology at theUniversity of Utrecht, and one of the most zealous promoters ofelectric lighting in microscopy, has had a small and very simpleapparatus constructed for him, which acts very well, and at the sametime fulfils the purpose of a rheostat or light regulator. This apparatus (fig. 105), is… … ELECTRICAL ILLUMINATION. 113 means of the brass foot, is carried direct to the lamp. From the lampthe current returns by a fine copper thread to the pillar b, and thenceto the negative pole of the electric current. The lamp can be raisedto different heights by meansof the two brass tubes S,which…
Microscopy
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