Uniformly on two infinite parallel planes

small balls of the same size are placed. The balls on each plane are connected by an elastic thread to the balls on the other plane. Thus, the balls can move freely along the planes and bounce off each other upon collision. This product is a puzzle toy that helps develop logical thinking, improve motor coordination and spatial imagination. The player needs to move the balls so that they appear in a certain order on each of the planes. This toy is suitable for children and adults who love solving puzzles and logic problems.

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The holes are distributed in the shape of circles. Using a special mechanism, you can change the distance between the planes. This product is an optical interferometer, which is used to measure the wavelength of light and determine the refractive index of materials. The interferometer works on the principle of interference of light waves passing through holes on different planes and creating an interference pattern. The accuracy of measurements depends on the quality of manufacture and setup of the device.

This product describes a problem from the field of electrostatics, which consists of the following: charges with surface densities σ1=σ and σ2=-2σ, where σ=20 nC/m^2, are uniformly distributed on two infinite parallel planes. It is necessary to find the electric field strength E in three areas: to the left, between and to the right of the planes, and also to indicate on the drawing the direction of the vector E for each area. To solve the problem, laws and formulas from electrostatics are used, such as Coulomb’s law, Gauss’s theorem, formula for calculating the electric field strength, etc.

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