... to 11.5, when calculated according tothe Wien's displacement law. In the case of far infrared rays, only thewavelength band ... infrared rays absorbed are penetrating intoour body due to its property, causing generation of heat. Accordingly, thethermal effect and perspiration are ... to 11.5, when calculated according tothe Wien's displacement law. In the case of far infrared rays, only thewavelength band ...