Whats the skin-penetrating ability of far-infrared and micro-wave infrared lights?
Long-wave infrared lights are also known as far-infrared lights. The depth of skin they can penetrate is 0.05-1 mm and 3-5 mm at most. However, the short-wave infrared lights have stronger penetration power i.e. the depth of skin they can penetrate is normally 1cm. If no protecting measure is taken, short-wave infrared lights may injure human eyes, making the crystals opaque and the protein change.
