电视机太亮影响健康--杨远锋的博客

电视机太亮影响健康

[ 2011-4-23 11:50:00 | By: 杨远锋 ]

电视机开得太亮对观看者的视觉器官有一定损害，因为光线过亮会强烈刺激人眼的视神经，连续看两个小时以上电视，人眼的视力会暂时降低30％，需要经过两个小时左右的安静休息，视力才能恢复。特别是看彩色电视，会大量损耗眼睛中的视紫红质，久而久之导致视力衰退。
荧光屏亮度过高，闪烁感强，人在观看图像时眼部感觉不舒服，容易疲劳，严重的还会出现头晕、流泪、睡不着觉等现象。
电视机开得太亮，阴极发射的电子束流很大，轰击荧光屏，温度较高，荧光粉虽然不会被立即烧毁，但时间太久，荧光粉的发光效率会受到影响，同时加速阴极老化，发射电子能力降低，使显像管的使用寿命缩短，有些电视机的亮度强弱与耗电量关系不大，但有的电视机亮度则直接影响耗电量。很显然，电视机开得太亮会增加耗电量，久而久之会造成一定的电力浪费。

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原创

[ 2016-9-6 16:31:01 | By: 原创(游客) ]

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原创

[ 2016-9-28 16:04:44 | By: 原创(游客) ]

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原创

[ 2016-9-30 10:39:46 | By: 原创(游客) ]

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Re:在漫画中识别身边的违章

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Re:在漫画中识别身边的违章

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Re:在漫画中识别身边的违章

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Re:在漫画中识别身边的违章

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