• Study of diffraction on a one-dimensional periodic structure;
• Determination of the wavelength of monochromatic light using a diffraction grating.

The light source stand and the stand for mounting the diffraction grating are rigidly fixed to the base of the setup. On the surface of the base there is a ruler for measuring the distance from the screen to the diffraction grating used in the experiment. An additional stand for storing two diffraction gratings that are not currently in use is mounted on the same surface. The polarizer is mounted in front of the diffraction grating and is used to reduce the intensity of radiation incident on the screen when photographing it with a video recorder. The scale of the shooting is determined using a ruler mounted at the bottom of the screen.

The work includes obtaining a diffraction pattern on the screen and photographing it in order to determine the wavelength of the coherent radiation source. When processing the photographs, a software distance meter is used, allowing the measured distances between diffraction maxima to be recorded in a table. The measurements are carried out for three diffraction gratings, and the resulting wavelength values ​​are averaged.