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红外线的波长为0.75μ～1 mm,(光波长为0.38～0.76μ)属电磁波范围,经物质吸收,产生热能。物质对远红外线放射波的吸收率,比近红外线大。发热量的时间,可短缩1/5。
The wavelength of infrared rays is 0.75μ~1mm, and the wavelength of light is 0.38~0.76μ. It belongs to the electromagnetic wave range and absorbs heat to generate heat energy. The absorption rate of far-infrared radiation from matter is greater than that of near-infrared rays. The calorie time can be shortened by 1/5.