Measurements on the index of refraction of air for wave lengths from 2218 A to 9000 S (1919)
National Bureau of Standards · leaf 22
by a bath of alcoholand water. The liquid was circulated through the tubes D andE by the motor-driven propeller F. Cooling was supplied to theliquid by the brine coil C and heat by a 5-ohm resistance coil H,the current in which was regulated by a relay operated by thethermostat J. This apparatus… … xfr/s/s/////////. \ O
Light refraction
Internet Archive · NIST Research Library · Public Domain Mark 1.0. Free to use for anything.
