Summary. The paper deals with a problem with initial conditions for a beam equation with embedded ends. The problem was solved in two ways: as a sum of the Fourier series in the system of eigenfunctions of a one-dimensional spectral problem, and using finite-difference approximations, a numerical solution was obtained. The quantitative coincidence of the results of numerical and analytical calculations of beam deformation is obtained.
Key words: oscillations of a beam, the Euler equation, the initial-boundary conditions.
Abstract: This article discusses the impact of electromagnetic radiation on the human body.
Key words: Cell phone, electromagnetic radiation.
Summary. Investigation of the influence of the properties of infrared rays on a person, the use of infrared radiation for treatment.
Key words: Infrared rays, wide spectrum, photophobia.