The uniform field version of the variable wavelength interferometry for transmitted light and a double refracting microinterferometer with Wollaston prism were used for the verification of the Michel-Levy's scale of interference colours of polarized white light emitted by a tungsten halogen lamp (12V/100W). It was stated that the first purple occurs between crossed polars when the optical path difference Δ= 555 to 558 nm, while Δ= 565 nn corresponds to the violet colour near the indigo. Consequently, the other purple colours were observed for the optical path differences slightly smaller than the values of Δ given in the Michel-Levy's scale for both crossed and parallel polars.

Date Published: 3 April 1989
PDF: 5 pages
Proc. SPIE 1121, Interferometry '89, (3 April 1989); doi: 10.1117/12.961295

Published in SPIE Proceedings Vol. 1121:
Interferometry '89
Zbigniew Jaroszewicz; Maksymilian Pluta, Editor(s)