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Definition of Abbe refractometer
1. Noun. (context physics) An instrument used to measure the refractive index by utilizing the critical angle for total reflection at the interface of a film of a liquid between two glass prisms.(reference-book last = first = authorlink = coauthors = editor =Gove, Philip Babcock others = title = Webster's Third International Dictionary of the English Language Unabridged origdate = origyear = 1909 origmonth = url = format = accessdate = accessyear = accessmonth = edition = date = year =1976 month = publisher =G. & C. Merriam Co. location = Springfield, MA language = id = doi = isbn =0-87779-101-5 lccn = ol = pages = chapter = ) ¹
¹ Source: wiktionary.com