United Scientific Precision Fresnel Biprism Interference Apparatus

United Scientific Supply Perform Fresnels Biprism Experiment on a 1m optical bench Precision optics allow fringe position measurements to 1100mm Easy alignment and adjustment of the two virtual light sources Fresnels Biprism Experiment is the fundamental example of common path interference by division of wavefront Light from a slit passes through side-by-side prisms with very shallow angles to separate it into two almost parallel beams When these beams are brought to overlapping by a convex lens, they interact as if they originated from two virtual sources side by side and generateВequally-spaced fringes The original version of the experiment by Fresnel is difficult to perform because it requires precise adjustmentВof the slit and prisms, a dark room, and a large amount of space to separate the fringes for easy viewing - USS