When light travels through a liquid at an angle, it bends or refracts: slowing down and changing direction as it travels through a new medium. This phenomenon can be used to measure the concentration of a liquid solution, as light refracts more when traveling through suspended solids or dissolved components, such as salts or sugars. This Abbe bench-top refractometer, based on a design by Ernst Abbe from the late 1800s, was manufactured by the Bausch & Lomb Optical Company for use in analytical laboratories.
16.2 x 35 x 25 cm
Matthew J. Brown
Based on a design from the 19th century, manufactured after 1944 (patent date)
NJIT Otto H. York Department of Chemical and Materials Engineering
refractometer, light, refract, bausch & lomb, ernst abbe