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The hair dryer has the strongest radiation? It’s not as terrible as you think!

Release Time

2022-09-26 13:11

The first thing to clarify is whether the electromagnetic radiation is harmful to the human body. The international answer has not been conclusive. Therefore, the answers to many of the following questions cannot be described in absolute language. They can only be discussed based on the basic principle of prevention.

1. Online said that in household appliances, the amount of radiation from the hair dryer is the biggest, is it true?

Any household appliance, from small flashlights, MP3s, to refrigerators and air conditioners, will generate electromagnetic radiation more or less. The special feature of the hair dryer is that its power is large, up to 1000W, and it is close to the human body when used, so the electromagnetic radiation brought by the hair dryer will be slightly higher than other household appliances. However, the frequency of such electromagnetic waves is very low, far less horrible than X-ray ionizing radiation, and the threat to the human body is also limited.

2, the router radiation is very large, and the stronger the signal, the greater the radiation, is it true?

Compared with other household appliances, the current mainstream routers have slightly higher radiation intensity in their working frequency bands of 2.4 GHz and 5 GHz. The state stipulates that the maximum transmission power of routers sold in the market shall not exceed 100mW. The experiment proves that the radiation intensity of the full-load work is similar to that of the mobile phone in the standby state, but since the distance from the human body when the router is used is much larger than that of the mobile phone, the radiation intensity is inversely proportional to the square of the distance, so the radiation effect of the router is relatively small. , in an acceptable range, people do not have to worry too much about the electromagnetic radiation hazard caused by the normal operation of the router.

At the same time, the signal quality of the router is not only related to its transmit power, but also related to modulation mode, multi-antenna technology, coding, etc., and the radiation intensity depends more on the transmit power. When discussing the relationship between signal strength and radiation intensity, it should be considered comprehensively. . If the signal is increased due to simply increasing the transmission power, the corresponding radiation intensity will be enhanced.

3. It is said that when the TV remote control is changed, the radiation will become very large. Is it true?

The TV remote control does emit infrared rays at the moment of changing channels, but since the remote control itself has a low transmission power, the transmission is completed in a short time, and the radiation thus generated is completely negligible.

4. Is the radiation back of the computer monitor larger than the front, is it true?

For a computer equipped with an early CRT display, since the CRT display emits an electron beam to the screen through an electron gun to display the image, the lead-containing screen can block the radiation to a certain extent, and when the shielding effect on the back of the computer display is insufficient, the electromagnetic radiation on the back side It may be larger than the front.

For today's popular LCD liquid crystal displays, color control is achieved by controlling the direction of rotation of liquid crystal molecules. The intensity of radiation depends more on the power and power consumption of internal electronic components and external shielding measures. The opposite is to determine the size of the radiation.

5. Put the mobile phone into the radiation protection suit. The worse the mobile phone signal is, the better the radiation protection effect is. Is it true?

The radiation protection suits on the market are mostly composed of metal fibers and textile fibers, and the shielding effect of the metal fibers in the garment is utilized to reduce external radiation. From the known experiments, under ideal conditions, protective clothing does have attenuating effect on electromagnetic radiation in a certain frequency band. However, most radiation suits have different degrees of radiation attenuation at different frequencies. In actual use, it is also difficult to fully protect the human body from the package. Today, there is no conclusion that electromagnetic radiation is harmful to human health. It is still difficult to determine whether the health is beneficial.

The hair dryer can still do so many things, it’s wonderful!

Nothing

The hair dryer can still do so many things, it’s wonderful!

Nothing

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