Regnault's specific gravity bottle, 19th century.

 
Regnault's specific gravity bottle, 19th century.
4 0 c m
 
25cm
actual image size: 17cm x 32cm

Description

The specific gravity bottle has just one accurate marking of 1000 grains. When the liquid inside is weighed, its density can be calculated. The bottle was developed by Henri Victor Regnault (1810-1878), a French chemist and physicist.

© Science Museum / Science & Society Picture Library

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