optical staining meaning in Hindi

Examples

1. This is an optical staining technique and requires no stains or dyes to produce a color effect.
2. The resulting contrast is going from dark-field for zero phase offset ( intensity proportional to the square of the shear differential ), to the typical relief seen for phase of ~ 5 90 degrees, to optical staining at 360 degrees, where the extinguished wavelength shifts with the phase differential.