Very Accurate Measurement of Fringe Shifts in an Optical Interferometer Study of Gas Flow

Autor:	Bernard M. Leadon, Frank D. Werner
Rok vydání:	1953
Předmět:	Shock wave Physics Interferometry Optics Density distribution business.industry Flow (psychology) Astrophysics::Instrumentation and Methods for Astrophysics Low density business Optical interferometer Instrumentation Refraction
Zdroj:	Review of Scientific Instruments. 24:121-124
ISSN:	1089-7623 0034-6748
DOI:	10.1063/1.1770637
Popis:	A new means of measuring fringe shifts for certain types of interferograms has been devised, and experimental tests indicate that accuracy of better than one five‐hundreth of the fringe separation is possible. The method and tests of its accuracy for a simple case of parallel fringes are described. The method eliminates concern over refraction effects in interferograms of a class of gas flows. Among certain measurements with the interferometer which are expected to be greatly facilitated by use of this technique, is the measurement of the density distribution within a low density shock wave front. Some other applications are suggested.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e9b19aa021216cc8aeefcfc1b99dbcb4 https://doi.org/10.1063/1.1770637 Zobrazit plný text záznamu