Pp Fresnels Biprism Diffraction Apparatus

Being a client-centric organization, we are engaged in exporting, manufacturing and supplying a huge spectrum of Fresnels Biprism Diffraction Apparatus in Ambala Cantt, Haryana, India. Fresnel's biprism diffraction Apparatus is an instrument that demonstrates how Fresnel's Bi prism can be used to obtain fringes due to interference and to calculate the wavelength of monochromatic light. Bi-prism produces interference pattern from a single source due to the creation of two virtual coherent sources as the light passes through the prism.
Fresnel's biprism consist of two prisms of very small angles joined base to base. In practice, a thin glass plate is taken and one of its faces is ground and polished till a prism is formed with an obtuse angle of about 179A and two side angles of the order 30 arc minutes. If a beam of light strikes the edge of the biprism, two diverging coherent light beams are created which appear to emerge from two virtual slits and interfere on the far side of the biprism.