In this article we show that a single transparent wedge or a plate with a wedge part can be used as a very simple and useful interferometer with numerous applications. This interferometer permits to modulate phase distribution on interference fringes to evaluate quantitatively the parallelism of a light beam and aberration of a wavefront. to specify the spectral line shape in a wide r... https://goodvibesbadhabiters.shop/product-category/nipple-clamps/