• study of Fraunhofer diffraction by a single slit
• determination of the wavelength of radiation based on the parameters of the diffraction pattern
• determination of the slit width based on the parameters of the diffraction pattern

The optical scheme of the setup includes a source of coherent radiation, a diffraction object and a translucent screen behind which a video recorder is installed. To install the optical elements, racks are used that can move along the optical bench.
A source of coherent radiation with a switch and a connector for connecting a power supply is mounted on one of the stands, a diffraction object is installed on the other. The third stand is used to place a screen and a video recorder.

The work includes obtaining a diffraction pattern on the screen and photographing it, as well as determining the wavelength of the coherent radiation source based on the analysis of images obtained when light passes through slits of known width. When processing photographs, a software distance meter is used, allowing the measured distances between diffraction maxima to be recorded in a table. After this, the inverse problem is solved - the width of the other two slits with metal edges included in the kit is determined.