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Old 03-26-2011, 02:12 PM   #1
ykjh6789
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Default 5小点让你看电视更健康

 做好5个标准观看电视最舒服
  要想舒服看电视,水宜生水杯价格,电视的亮度、安放高度等都有讲究。近日,来自美国麻省理工学院的一份研究报告对此做出指导。
  安放高度。电视的屏幕中心应在观看者的水平视线向下3—5厘米处,能避免因仰视或俯视引起颈部的肌肉疲 劳。
  电视亮度。如果电视的对比度、亮度太大,虽然图像更清楚了,但由于光线亮度不均匀,让人们视力集中在亮 处,容易引起眼睛疲劳;如果对比度、亮度太小,则图像色彩不分明,看不清楚。因此,电视亮度和对比度一定要 调节适中、柔和。
  观看距离。电视的大小,是以屏幕的对角线长度来衡量的,健尔马第三代足疗机,如29寸、34寸。一般来说,健尔马脊柱保,电视越大,观看距离就要越远,安全距离是电视大小×0.1,比如42寸的电视,健尔马足疗机官网,至少要离4.2米远,眼睛看着才舒服。因此,电视的选择应该与居室面积成正比,如果客厅或卧室面积不大, 最好不要放太大的电视。
  居室光线。白天看电视,最好拉上窗帘,健尔马足疗机三代,以免阳光照在屏幕上反光,看不清画面。晚上看电视,屋里光线不要太暗,也不要太亮,可以在电视旁边放一盏 光线柔和的灯,减小明暗反差,健尔马足疗机,眼睛就不容易酸疼了。
  最佳座位。电视发出的光线属于强光,而屏幕中心的光线相对更强。因此,看电视时,最好坐在稍微偏离屏幕 正心中(成30度左右)的位置上,这样可以避免强光刺激眼睛。另外,尽量避免长时间坐在柔软的沙发上,最好 选择硬质的靠背椅。
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