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　　答：太陽(yang)發(fa)出的(de)光(guang)(guang)(guang)波(bo)(bo)(bo)(bo)又(you)叫(jiao)電(dian)磁波(bo)(bo)(bo)(bo)。經三棱(leng)鏡折射(she)后(hou)，能(neng)(neng)見(jian)(jian)(jian)到的(de)紅(hong)、橙、黃、綠、青(qing)、藍、紫七色光(guang)(guang)(guang)為(wei)可見(jian)(jian)(jian)光(guang)(guang)(guang)。還(huan)有肉眼看不(bu)見(jian)(jian)(jian)的(de)光(guang)(guang)(guang)波(bo)(bo)(bo)(bo)，如無線(xian)電(dian)波(bo)(bo)(bo)(bo)、微(wei)(wei)波(bo)(bo)(bo)(bo)、紅(hong)外(wai)線(xian)、紫外(wai)線(xian)、X線(xian)、γ射(she)線(xian)等，叫(jiao)不(bu)可見(jian)(jian)(jian)光(guang)(guang)(guang)。在紅(hong)光(guang)(guang)(guang)以(yi)外(wai)的(de)光(guang)(guang)(guang)波(bo)(bo)(bo)(bo)叫(jiao)做紅(hong)外(wai)線(xian)，波(bo)(bo)(bo)(bo)長為(wei)0.77-1000微(wei)(wei)米(mi)(mi)，在紅(hong)外(wai)線(xian)中(zhong)又(you)分為(wei)遠(yuan)紅(hong)外(wai)線(xian)、中(zhong)波(bo)(bo)(bo)(bo)紅(hong)外(wai)線(xian)、短(duan)波(bo)(bo)(bo)(bo)紅(hong)外(wai)線(xian)。其(qi)中(zhong)波(bo)(bo)(bo)(bo)長8—14微(wei)(wei)米(mi)(mi)的(de)遠(yuan)紅(hong)外(wai)線(xian)對人極具保健功(gong)能(neng)(neng)，又(you)被譽為(wei)育成光(guang)(guang)(guang)線(xian)，也叫(jiao)生(sheng)命光(guang)(guang)(guang)線(xian)。長波(bo)(bo)(bo)(bo)紅(hong)外(wai)線(xian)也叫(jiao)遠(yuan)紅(hong)外(wai)線(xian)，穿透皮膚的(de)深度一般在0.05—1毫米(mi)(mi)，最多穿透3—5毫米(mi)(mi)，而短(duan)波(bo)(bo)(bo)(bo)紅(hong)外(wai)線(xian)穿透力強，一般在1厘米(mi)(mi)。短(duan)波(bo)(bo)(bo)(bo)紅(hong)外(wai)線(xian)如不(bu)加防(fang)護對人體(ti)的(de)眼睛有傷害，可使晶體(ti)混濁，蛋白質變(bian)化。