说法1:
http://zhidao.baidu.com/question/30171633.html
你知道计算机的辐射量是多少吗？
1、键盘1000V／m
2、鼠标450V／m
3、屏幕218V／m
4、主机170V／m
电脑的键盘、鼠标为何会有电磁辐射呢？因为它们是通过主机的交流电能产生交变信号实现所有功能的，所以能产生低频辐射。 (应该是整流后的直流,不存在低频辐射)
简便的说：因为键盘、鼠标都是和电脑的主机相连接的。如果是无线键盘、鼠标。那电磁辐射就几乎没有，非常小。
而距离两英尺以最高发射功率计算，一个802.11b无线鼠标、键盘等设备所产生的辐射仅为每平方厘米2微瓦(1微瓦为百万分之一瓦特)。而性能更高的 802.11g产品所释放的辐射就更小了。美国联邦通信委员会FCC规定，只要无线网络设备的辐射限定在每平方厘米1000微瓦之内都是安全的。因此，哪 怕有几十个无线设备同时在一个房间内使用，也不会对人体产生危害。专家表示："电磁波产生最多的地方是插电的电线，而键盘的布线符合向周围泄漏电磁辐射的问题。"华北计算技术研究所的崔屹则认为："键盘因为泄漏的电磁辐射，更成为除显示器外信息最容易被截获并被复现的设备。"
说法2:
http://zhidao.baidu.com/question/30171633.html
在Google上键入"键盘辐射"，0.2秒后跳出85100条检索结果。粗粗 浏览，"键盘辐射，敲响健康警钟！"、"电脑辐射伤害最大在键盘"、"站在辐射的问题上选键盘"等帖子比比皆是。点击进入阅读正文，有关"键盘辐射最大" 的描述更是"证据确凿"：键盘1000伏特/米（电磁辐射的通用计量单位）、鼠标450伏特/米、屏幕218伏特/米、主机170伏特/米。莫非键盘真的 就是被人忽视的电脑辐射污染源？
市计量测试技术研究院电磁兼容重点实验室业务主管林志煌说，即便都是键盘，不同 厂商的产品所产生的电磁辐射也不同。将键盘、鼠标、屏幕、主机四种不同电脑部件放在一起做比较，本身就不是科学态度。更何况，从理论上讲，耗电量越大的电 子产品产生电磁辐射的几率越高。在键盘、鼠标、屏幕、主机四者之中，显然是主机和屏幕更耗电。
那么，网上盛传的检测数据又是如何得来的呢？林志煌推测，这可能是某些对电磁辐射问题感兴趣的大学生私下检测的结果。他告诉记者，在一些电子商 场，大学生很容易买到测试电磁辐射的简易量表，它的前端是块海绵体，内置一个小型感应器。一旦测量者无法对键盘、鼠标、屏幕、主机的测量距离做到 "一视同仁"，得出的结果将与实际情况相去甚远。"要知道，就电磁辐射来说，1000伏特/米是一个非常惊人的数量级，怎会出自小小一块键盘？"林志煌的 解释彻底为键盘"洗"清了"罪名"。
尽管有关电磁波是否会伤害人体脑电波的争论，国际上尚无定论，但林志煌提醒消费者，购买电子产品一定要认准"3C"标志。这一标志表示，该产品所 产生的电磁辐射符合国家标准。对于电脑前放上一盆仙人掌就能减少辐射的"民间妙方"，林志煌则不敢苟同："除非你在面前放一块铁板将电磁波反射回去，否则 只能是自欺欺人。"
说法3:
http://www.theregister.co.uk/2000/07/13/can_your_keyboard_kill_you/
Repetitive Strain Injury (RSI) could be caused by radiation emitted from keyboards. （重复性劳损可能是由键盘释放的电磁幅射引起的，LSZ译）No, we're not making this up.（我们不是开玩笑的，SF译；我们并不是在危言耸听，LSZ译）
A letter published in the December edition of Journalist, the magazine of the National Union of Journalists (NUJ), speculates whether the "electromagnetic radiation immediately under each fingertip" could be to blame for the debilitating and painful condition.
The letter reads: Has anyone explored the possibility of RSI being caused by the radiation emitted by keyboard strokes every time one keys a letter? The make-and-break of electronic keys must issue a short burst of electromagnetic radiation immediately under each fingertip and the body's nervous system comprises a myriad of electrical pathways - might it not have a cumulative adverse effect?
说法4:
http://www.safety.uwa.edu.au/policies/computer_workstation_ergonomics
Keyboard equipment and radiation
Computer screens emit visible light which allows the characters on the screen to be seen. Weak electromagnetic fields and very low levels of other radiation, not visible to the human eye, can be detected by sensitive instruments. Similar emissions are produced by television receivers.
The levels of most radiations and electromagnetic fields emitted from computers are much less than those from natural sources, such as the sun or even the human body and are well below levels considered to be harmful by responsible expert bodies such as the International Radiation Protection Association (IRPA).
防键盘辐射的设备:
http://www.lessemf.com/computer.html
Reduce Electric Fields from your Keyboard!
VeilShield is a high performance shielding fabric which is very sheer and easy to see through. Simply drape it over your keyboard, mouse, or any other device and you can still see and operate almost like normal. Stock material is 58 inches wide and very easy to trim to any size with ordinary scissors. Specify length when ordering. Remember, you will need to purchase a ground cord!
http://zhidao.baidu.com/question/30171633.html
你知道计算机的辐射量是多少吗？
1、键盘1000V／m
2、鼠标450V／m
3、屏幕218V／m
4、主机170V／m
电脑的键盘、鼠标为何会有电磁辐射呢？因为它们是通过主机的交流电能产生交变信号实现所有功能的，所以能产生低频辐射。 (应该是整流后的直流,不存在低频辐射)
简便的说：因为键盘、鼠标都是和电脑的主机相连接的。如果是无线键盘、鼠标。那电磁辐射就几乎没有，非常小。
而距离两英尺以最高发射功率计算，一个802.11b无线鼠标、键盘等设备所产生的辐射仅为每平方厘米2微瓦(1微瓦为百万分之一瓦特)。而性能更高的 802.11g产品所释放的辐射就更小了。美国联邦通信委员会FCC规定，只要无线网络设备的辐射限定在每平方厘米1000微瓦之内都是安全的。因此，哪 怕有几十个无线设备同时在一个房间内使用，也不会对人体产生危害。专家表示："电磁波产生最多的地方是插电的电线，而键盘的布线符合向周围泄漏电磁辐射的问题。"华北计算技术研究所的崔屹则认为："键盘因为泄漏的电磁辐射，更成为除显示器外信息最容易被截获并被复现的设备。"
说法2:
http://zhidao.baidu.com/question/30171633.html
在Google上键入"键盘辐射"，0.2秒后跳出85100条检索结果。粗粗 浏览，"键盘辐射，敲响健康警钟！"、"电脑辐射伤害最大在键盘"、"站在辐射的问题上选键盘"等帖子比比皆是。点击进入阅读正文，有关"键盘辐射最大" 的描述更是"证据确凿"：键盘1000伏特/米（电磁辐射的通用计量单位）、鼠标450伏特/米、屏幕218伏特/米、主机170伏特/米。莫非键盘真的 就是被人忽视的电脑辐射污染源？
市计量测试技术研究院电磁兼容重点实验室业务主管林志煌说，即便都是键盘，不同 厂商的产品所产生的电磁辐射也不同。将键盘、鼠标、屏幕、主机四种不同电脑部件放在一起做比较，本身就不是科学态度。更何况，从理论上讲，耗电量越大的电 子产品产生电磁辐射的几率越高。在键盘、鼠标、屏幕、主机四者之中，显然是主机和屏幕更耗电。
那么，网上盛传的检测数据又是如何得来的呢？林志煌推测，这可能是某些对电磁辐射问题感兴趣的大学生私下检测的结果。他告诉记者，在一些电子商 场，大学生很容易买到测试电磁辐射的简易量表，它的前端是块海绵体，内置一个小型感应器。一旦测量者无法对键盘、鼠标、屏幕、主机的测量距离做到 "一视同仁"，得出的结果将与实际情况相去甚远。"要知道，就电磁辐射来说，1000伏特/米是一个非常惊人的数量级，怎会出自小小一块键盘？"林志煌的 解释彻底为键盘"洗"清了"罪名"。
尽管有关电磁波是否会伤害人体脑电波的争论，国际上尚无定论，但林志煌提醒消费者，购买电子产品一定要认准"3C"标志。这一标志表示，该产品所 产生的电磁辐射符合国家标准。对于电脑前放上一盆仙人掌就能减少辐射的"民间妙方"，林志煌则不敢苟同："除非你在面前放一块铁板将电磁波反射回去，否则 只能是自欺欺人。"
说法3:
http://www.theregister.co.uk/2000/07/13/can_your_keyboard_kill_you/
Repetitive Strain Injury (RSI) could be caused by radiation emitted from keyboards. （重复性劳损可能是由键盘释放的电磁幅射引起的，LSZ译）No, we're not making this up.（我们不是开玩笑的，SF译；我们并不是在危言耸听，LSZ译）
A letter published in the December edition of Journalist, the magazine of the National Union of Journalists (NUJ), speculates whether the "electromagnetic radiation immediately under each fingertip" could be to blame for the debilitating and painful condition.
The letter reads: Has anyone explored the possibility of RSI being caused by the radiation emitted by keyboard strokes every time one keys a letter? The make-and-break of electronic keys must issue a short burst of electromagnetic radiation immediately under each fingertip and the body's nervous system comprises a myriad of electrical pathways - might it not have a cumulative adverse effect?
说法4:
http://www.safety.uwa.edu.au/policies/computer_workstation_ergonomics
Keyboard equipment and radiation
Computer screens emit visible light which allows the characters on the screen to be seen. Weak electromagnetic fields and very low levels of other radiation, not visible to the human eye, can be detected by sensitive instruments. Similar emissions are produced by television receivers.
The levels of most radiations and electromagnetic fields emitted from computers are much less than those from natural sources, such as the sun or even the human body and are well below levels considered to be harmful by responsible expert bodies such as the International Radiation Protection Association (IRPA).
防键盘辐射的设备:
http://www.lessemf.com/computer.html
Reduce Electric Fields from your Keyboard!
VeilShield is a high performance shielding fabric which is very sheer and easy to see through. Simply drape it over your keyboard, mouse, or any other device and you can still see and operate almost like normal. Stock material is 58 inches wide and very easy to trim to any size with ordinary scissors. Specify length when ordering. Remember, you will need to purchase a ground cord!
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