Abstract

By means of a grid and three centered and astigmatic optical systems, it is possible to get an arbitrary orientation of the image of the slits of the grid with respect to the measuring direction. Such a device improves the accuracy of the observation of boundary layers encountered in aerodynamical, thermal, and mass transport phenomena. This process can also easily be applied to differential interferometry.

© 1971 Optical Society of America

New Dimension in the Schlieren Technique: Flow Field Analysis Using Color

A. R. Maddox and R. C. Binder
Appl. Opt. 10(3) 474-481 (1971)

Thermally Induced Modifications of a High Power cw Laser Beam

P. M. Livingston
Appl. Opt. 10(2) 426-436 (1971)

New Doppler Holographic Technique for Fluid Velocity Visualization and Measurement

W. T. Mayo and J. B. Allen
Appl. Opt. 10(9) 2119-2126 (1971)

Moiré Contour-Sum Contour-Difference, and Vibration Analysis of Arbitrary Objects

J. Der Hovanesian and Y. Y. Hung
Appl. Opt. 10(12) 2734-2738 (1971)

Formulas for the Derivatives of the Complex Index of Refraction with Respect to Δ, ψ, φ, and d

D. H. Loescher
Appl. Opt. 10(5) 1031-1033 (1971)