Use of Infrared Therapy in Physiotherapy
What is an infrared ray? ~Infra-red rays are the electromagnetic wave whose wavelength is just below the red ray of visible light.Its wavelength is 750 nm-400000 nm.~Infra-red rays is emitted by any hot object. It can be hot iron, hot metal, fire, or burning charcoal. Sunray alsohas infrared rays in it & that’s why it…