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Date Posted: 21:45:34 02/11/00 Fri
Author: 仇老師
Author Host/IP: bbig014241.netvigator.com / 207.176.121.241
Subject: Re: 請問電視機會放出甚麼輻射?
In reply to: ”問題”少年 's message, "請問電視機會放出甚麼輻射?" on 21:29:42 02/11/00 Fri

> 聽人講電視機會放出電磁波(electromagnetic wave),
> 請問是那一種電磁波呢?

其實,電視機放出的電磁波有很多類.其中主要有
一.x光(X-ray)
  顯像管放出的是微弱的x光(X-ray)
  因為電視影像是由一些高速電子撞擊屏幕上的發光化學材料
  而發光,但與此同時又會釋放出一些電磁波x光(X-ray).
二.50hz電磁波
  電視機內有一些電線圈,當50hz交流電電源接通時,線圈
  便會產生一些變化的電磁波,而這些電磁波是跟交流電的頻率
  一致的.而且,這些電磁波強度比較大.

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