The article describes medical physics, one of the newest important directions of modern physical science, which emerged on the border of different departments of physics based on the integration of biological and physical sciences. The main task of the medical physics course is to study the structure of living organisms and their physical foundations. Scientific-theoretical analysis of the processes occurring in a living organism, for example, from some molecules and their collections to cells, their categories, tissues, organs, and whole organisms. The scientific-theoretical basis of the use of light rays in the study of cells and tissues with the help of infrared light is given. Also, the prospects of researching biological tissues using the laws of physics are analyzed.

medicine, physics, optical radiation, thermal radiation, biology, integration, x-ray structure, electron microscope, radioisotope, electron, nuclear, magnetic, radiospectroscopy, optical spectroscopy, mass spectrometry, activation, radioelectronics, cybernetics, modeling, infrared light, tissue, cell