Description

For demonstrating the principles of the diffraction grating and the way in which its properties are dependent upon the no. of lines per unit length. The Apparatus comprises a glass mount 90 x 30mm approximately with three 16 x 9mm apertures, each containing a diffraction grating replica. The gratings are 100 lines per mm, 300 lines per mm and 600 lines per mm respectively. All are mounted in one frame.