caa a22 4500 477093434 CHVBK 20180405111521.0 cr unu---uuuuu 170330e19960501xx s 000 0 eng 10.1007/BF00204630 doi (NATIONALLICENCE)springer-10.1007/BF00204630 High data density temperature measurement for quasi steady-state flows [Elektronische Daten] [C. Mercer, N. Rashidnia, K. Creath] A new optical instrument, the liquid crystal point diffraction interferometer (LCPDI), is used to measure the temperature distribution across a heated chamber filled with silicone oil. Data taken using the LCPDI are compared to equivalent measurements made with a traversing thermocouple and the two data sets show excellent agreement. This instrument maintains the compact, robust design of Linnik's point diffraction interferometer and adds to it phase stepping capability for quantitative interferogram analysis. The result is a compact, simple to align, environmentally insensitive interferometer capable of accurately measuring optical wavefronts with very high data density and with automated data reduction. Springer-Verlag, 1996 Mercer C. NASA Lewis Research Center, 44135, Cleveland, OH, USA aut Rashidnia N. NYMA, Inc., NASA LeRC, 44135, Cleveland, OH, USA aut Creath K. University of Arizona, Optical Science Center, 85721, Tucson, AZ, USA aut Experiments in Fluids Springer-Verlag 21/1(1996-05-01), 11-16 0723-4864 21:1<11 1996 21 348 https://doi.org/10.1007/BF00204630 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00204630 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Mercer C. NASA Lewis Research Center, 44135, Cleveland, OH, USA aut NATIONALLICENCE 700 1- Rashidnia N. NYMA, Inc., NASA LeRC, 44135, Cleveland, OH, USA aut NATIONALLICENCE 700 1- Creath K. University of Arizona, Optical Science Center, 85721, Tucson, AZ, USA aut NATIONALLICENCE 773 0- Experiments in Fluids Springer-Verlag 21/1(1996-05-01), 11-16 0723-4864 21:1<11 1996 21 348 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer