ong Radio Waves 90 Standard AM Radio 电磁波谱 Short-wave Radio Television, FM Radio Weather Radar, Radiosonde 1 cm Microwaves 100μm Visible 0.6 Orange 10-1m 0.5 Gree Blue Gamma Rays FIGURE 2.7 The electromagnetic spectrum Environmental Hygiene. 2018Environmental Hygiene. 2018 电磁波谱