What keyboards and mice can radiate?

Keyboard and mouse are not radiation-proof. But there is not much radiation damage ~

Keyboards radiate the most? be baseless

Enter "keyboard radiation" in Google, and 85 100 search results will pop up after 0.2 seconds. A cursory glance, "keyboard radiation, sound health alarm!" Posts such as "The biggest harm of computer radiation lies in the keyboard" and "Choosing a keyboard from the perspective of radiation" abound. Click to read the text, and the description of "keyboard radiation is the largest" is even more "conclusive": keyboard 1000 volts/meter (the universal measurement unit of electromagnetic radiation), mouse 450 volts/meter, screen 2 18 volts/meter, and host 170 volts/meter. Is keyboard really a neglected source of computer radiation pollution?

The reporter's question was "laughed at" by experts. Lin, business director of the Key Laboratory of Electromagnetic Compatibility of the Municipal Institute of Metrology and Testing Technology, said that even if they are all keyboards, the electromagnetic radiation produced by products from different manufacturers is different. It is not a scientific attitude to compare keyboard, mouse, screen and host computer. What's more, theoretically speaking, the greater the power consumption, the higher the probability of electromagnetic radiation generated by electronic products. Among keyboards, mice, screens and mainframes, it is obviously the mainframes and screens that consume more power.

So, how did the online rumored test data come from? Lin speculated that this may be the result of private tests by some college students who are interested in electromagnetic radiation. He told reporters that in some electronic shopping malls, it is easy for college students to buy simple scales to detect electromagnetic radiation. Its front end is a sponge with a small sensor built in. Once the surveyors can't treat the distance between keyboard, mouse, screen and host equally, the result will be far from the actual situation. "You know, in terms of electromagnetic radiation, 1000 volts/meter is a very amazing order of magnitude. How can it come from the keypad? " Lin's explanation completely cleared the "white washing" of the keyboard.

Although the international debate on whether electromagnetic waves will harm human brain waves is inconclusive, Lin reminded consumers that they must look for the "3C" logo when buying electronic products. This sign indicates that the electromagnetic radiation generated by this product meets the national standards. Lin disagreed with the "folk prescription" that putting a cactus in front of the computer can reduce radiation: "Unless you put an iron plate in front of you to reflect electromagnetic waves back, you can only deceive yourself."

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