I OBSERVE that in your issue of June 17 (p. 157) there is an article by Mr. Gordon Thompson on “The Determination of the Index of Refraction of a Fluid by Means of the Microscope.” The method ...

The Verismo V also brews its coffee from pods, though Starbucks has trimmed down the size of this machine by a good 1 to 2 inches all around (11.7 inches tall, 5.9 inches wide, 14.9 inches deep).

By 1920 the National Bureau of Standards reported that Valentine's Precision Refractometer was “the most accurate Abbé refractometer we have so far tested.” In 1928, Valentine received the Edward ...

The Fisher Scientific™ Abbe Bench-top Refractometer measures refractive indices of liquid and solid samples at D-line (589nm), featuring a combination of the Brix and refractive index (nD) scales.