pl23_ship4018.jpg

Figure 15

Image

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Description

Figure 15. K. Grein's photometer invented and made by Klaus Green in 1912 aspart of a series of photometers devised in collaboration with Wolfgang Ewald.This instrument was first tested from the EIDER in 1913 between 500meters water depth. As a result of these tests, Grein began studies of thepenetration of ultra-violet light into the sea.

Credit

Oceanographic Museum of Monaco

Photographer

P. Roggero

Collection

Voyage to Inner Space
History of Oceanography Collection
The Early Instruments - Collections of the Oceanographic Museum at Monaco
Photometers

Keywords

Oceanography
Historical instruments