第一节 概述 ELECTRO-MAGNETIC WAVE Visual Rays Micro wave Electric X Ultra Infrared Oven/Radar wave Rays Rays violet /Communi (Radio/TV/ Rays e Rays tet caticnl FM) Near Infrared Rays Middle Far Infrared Rays Infrared Rays 0.75 1000 Grow-up Rays IWave Length range to bring good effects to the human body and a living thing) (6-14 micron) 22 第一节 概述