Demonstrates the principle of diffraction grating.

• For demonstration principle of diffraction grating
• Comprises a card mount 90 x 40 mm with three 16 x 9 apertures
• Gratings are 100 lines/mm, 300 lines/mm, 600 lines/mm
• Include protected cover glasses

For demonstrating the principle of the diffraction grating and the way in which its properties are dependent upon the number of lines per unit length. Comprises a card mount 90 x 40 mm approximately with three 16 x 9 mm apertures, each containing a diffraction grating replica. The grating are of 100 lines / mm, 300 lines / mm and 600 lines /mm respectively and protected cover glasses.