Archive image from page 284 of The depths of the ocean. The depths of the ocean : a general account of the modern science of oceanography based largely on the scientific researches of the Norwegian steamer Michael Sars in the North Atlantic depthsofoceangen00murr Year: 1912 jjy pii Fig. On the left, as it is sent down -Helland-Hansen's Photometer. in the middle, open for exposure ; on the right, closed and ready for hauling up. 'Michael Sars ' Atlantic Expedition, the author constructed a Heiiand- - - - - . . - . . . „. , Hansen's photometer. new kind of photometer, which is represented
Archive image from page 284 of The depths of the ocean. The depths of the ocean : a general account of the modern science of oceanography based largely on the scientific researches of the Norwegian steamer Michael Sars in the North Atlantic depthsofoceangen00murr Year: 1912 jjy pii Fig. On the left, as it is sent down -Helland-Hansen's Photometer. in the middle, open for exposure ; on the right, closed and ready for hauling up. 'Michael Sars ' Atlantic Expedition, the author constructed a Heiiand- - - - - . . - . . . „. , Hansen's photometer. new kind of photometer, which is represented in Fig. 171. In 'sens the centre figure—at the lower part—is seen a brass cube ; the four sides and the top have square ' windows,' and on each of them a small square frame with a similar window (2x2 cm.) can be screwed fast; the screws and openings are seen in the figure. The cube rests on a larger brass plate, or rather on an india-rubber mat covering the brass plate. The plate and cube are fastened inside a frame, along which they can be moved up and down. At the top of the central figure is seen a larger
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Photo credit: © Actep Burstov / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: 1900, 1910, 1912, _michael_sars_north_atlantic_deep_sea_expedition_191, appell_f_jakob_johan_adolf_1857_, archive, book, bookauthor, bookcentury, bookdecade, bookpublisher, booksubject, bookyear, drawing, gran_h_h_haakon_hasberg_1870_, helland_hansen_bj_rn_1877_, historical, history, illustration, image, london_macmillan, murray_john_sir_1841_1914, north_atlantic_ocean, oceanography, page, picture, print, reference, vintage
