Maximum keyboard radiation? Nonsense! (Zz)

I have seen this news in many places over the past two days ~ Well, someone finally came up to clarify the strange story of "the biggest keyboard radiation:

Type "keyboard radiation" on Google, and 0.2 results will pop out after 85100 seconds. Rough browsing, "keyboard radiation, sound health alarm !" There are many posts, such as "the most harmful computer radiation is on the keyboard" and "selecting the keyboard on the question of standing on the radiation. Click to read the text. The description of "Maximum keyboard radiation" is "conclusive evidence": keyboard 1000 volt/meter (general measurement unit of electromagnetic radiation) mouse 450 volt/meter, screen 218 volt/meter, host 170 volt/meter. Is the keyboard really a computer radiation pollution source ignored?

The reporter's question was "joke" by the experts. Lin zhihuang, Business Director of the key electromagnetic compatibility Laboratory of the Municipal institute of measurement and testing technology, said that even if the keyboard is used, the electromagnetic radiation produced by products of different manufacturers is also different. It is not a scientific attitude to compare the four computer components, keyboard, mouse, screen, and host. Furthermore, theoretically, electronic products with larger power consumption have a higher chance of generating electromagnetic radiation. Among the keyboard, mouse, screen, and host, the host and screen consume more power.

So how can we obtain the detected data uploaded on the Internet? Lin zhihuang speculated that this may be the result of private tests by some college students interested in electromagnetic radiation. He told reporters that in some electronic malls, it is easy for college students to buy a simple meter for testing electromagnetic radiation. Its front end is a block of sponge and a small sensor is built in. Once the surveyors cannot "treat the distance" between the keyboard, mouse, screen, and host, the results will be far from the actual situation. "You know, in the case of electromagnetic radiation, 1000 volts/meter is an astonishing magnitude. How can it come from a small keyboard ?" Lin zhihuang explained that the keyboard was "washed" and "guilty ".

Although the debate on whether electromagnetic waves will harm human brain waves remains inconclusive internationally, Lin zhihuang reminded consumers that they must identify the "3C" mark when purchasing electronic products. This indicator indicates that the electromagnetic radiation produced by the product complies with national standards. Lin zhihuang does not dare to say that a pot of cactus in front of the computer can reduce the radiation of the "": "Unless you put an iron board in front of your computer to reflect the electromagnetic waves back, you can only deceive yourself ."

Xiaosheng commented: the keyboard has the largest radiation, and he was very skeptical at the beginning, although this article seems less professional (the last sentence in this article is that the iron board reflection electromagnetic waves are doubtful, only heard of electromagnetic shielding ......), But the number of 1000 V/m is really chilling. Once again, I advise you not to trust some remotely spoken words on the Internet. If you do not know some common sense, You can Google it.