The isodyne method proposed by Pindera and his co-workers can deduce three stress components in the plane problem and can catch the stress information inside the loaded object nondestructively.

Several nondestructive stress measurement methods for canopy transparencies are summarized,including ultrasonic testing method,photoelastic method and isodyne method.

experimental system of differential Isodyne developed by authors is represented.

An approach to computing pixel-by-pixel gradients of optical directly from digitally encoded Fouriertransform or phase-stepped fringe patterns is used in the information recognition of Isodyne fringe pattern.

Recent works have showed that autosomal genes have widespread random monoallelic expression, suggesting that gene expression is mosaic.