pl23_ship4423.jpg

Figure 49

Image

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Description

Figure 49. Fery refractometer, an instrument first suggested by Julius Hilgardof the United States Coast and Geodetic Survey to measure the density of seawater by relating the index of refraction of a liquid to its density. Theinstrument shown was developed by the Frenchman Charles Fery in 1891.

Credit

Oceanographic Museum of Monaco

Photographer

Y. Berard

Collection

Voyage to Inner Space
History of Oceanography Collection
The Early Instruments - Collections of the Oceanographic Museum at Monaco
Miscellaneous Instruments, Deck Gear, and Laboratory Instruments

Keywords

Oceanography