health
Wednesday, May 18, 2005
和阳光玩危险
专家们认为,棕色人种日晒15000小时,就有可能患上皮肤癌。这个日晒时间当然不光是指度假,同时也包括日常生活中受到的日晒
毫无顾忌地将自己的皮肤暴露在太阳下,那就变成一种很危险
90%的紫外线能穿透云层,云层并非紫外线的最佳盾牌。
人们都以为打一把遮阳伞能遮阳,事实上50%的紫外线能透过阳伞的隔离,伤及人体。玻璃也是如此,它只能隔离紫外线B,而紫外线A会毫无阻拦地穿透玻璃。
posted by 張醫生 at
6:58 PM
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