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 PHYSICAL OCEANOGRAPHY 249 metres ; Petersen found that in the neighbourhood of Capri a Petersen. plate was influenced by the rays at a depth of 550 metres, Luksch made some investigations in the eastern part of the Luksch. Mediterranean, exposing his plate for fifteen minutes, and found that the limit of the light-rays mus
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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 PHYSICAL OCEANOGRAPHY 249 metres ; Petersen found that in the neighbourhood of Capri a Petersen. plate was influenced by the rays at a depth of 550 metres, Luksch made some investigations in the eastern part of the Luksch. Mediterranean, exposing his plate for fifteen minutes, and found that the limit of the light-rays must be drawn at 600 metres. In these experiments the influence of the collected rays on an ordinary photographic plate was studied. In order to make some investigations on this subject in the