The theoretical upper limit of moire interferometry is approached as the reference grating pitch approaches _/2 and its frequency approaches 2/_. This work demonstrates the method at 97.6% of the theoretical limit. A virtual ...

Previous studies on acoustooptic hybrid bistable devices have been limited to the Bragg regime involving two diffracted orders, and no comparisons have been made between experimental results and theoretical predictions. ...

For a severely defocused incoherent system, its optical transfer function (OTF) has isolated zeros; therefore, an exact inverse filtering cannot be performed. Isolated zeros in the OTF can be avoided by choosing an annular ...

Through the application of the Rayleigh criterion for a two-point resolution, the dependence of the depth of focus on the resolution in the image is determined for a rectangular, a Gaussian, and an annular lens aperture. ...

Real-time methods for differentiation of in-plane displacement fields produced by the moire interferometry technique are introduced. Two approaches are developed: (1) optical shearing of displacement patterns and (2) ...

Nth_order multifrequency coherence functions arising in beam propagation through focusing media with random_axis misalignments and focusing media with additive statistical fluctuations are computed. The analysis is carried ...

Görtler instability for boundary‐layer flows over generally curved walls is considered. The full‐linearized disturbance equations are obtained in an orthogonal curvilinear coordinate system. A perturbation procedure to ...

The development of the general flux formulation for heat conduction based on the modified Fourier's law is presented. This new formulation produces a hyperbolic vector equation in heat flux which is more convenient to use ...

The instability of flows around hump and dip imperfections is investigated. The mean flow is calculated using interacting boundary layers, thereby accounting for viscous/inviscid interaction and separation bubbles. Then, ...

Exact closed-form solutions for finite amplitude sonic shocks are presented for the case of a van der Waals gas having a constant specific heat. Solutions are provided for both single and double sonic shocks. Sample ...