When sleeping at night, how far should the mobile phone be placed so that there is no radiation?

We often hear some news that mobile phones have radiation. If you put your mobile phone under your pillow when you sleep at night, it will continuously emit radiation at night.

So in order to avoid being radiated by the mobile phone, how far should we put the mobile phone?

Cell phone radiation

It is a fact that mobile phones emit radiation, but what everyone does not know is that any object above absolute zero will emit radiation. For example, humans themselves also emit radiation, and plants, sunlight, etc. all emit radiation. But these radiations have little effect on the human body, the only effect being "heat".

This is because,

There are two types of radiation, one is non-ionizing radiation that is harmless to the human body, and the other is ionizing radiation that is harmful to the human body.

The energy of non-ionizing radiation is relatively weak, and their energy only makes the particles in the material vibrate and the temperature rises. Does not change the rotation of molecules or atoms.

The energy of ionizing radiation is strong, which can damage the cells in the human body and may cause genetic mutation in the cells.

We know that DNA in cells stores human genetic material. If it is hit by ionizing radiation, it may cause genetic mutation, and the mutated gene may cause human genetic diseases. For example, cancer, leukemia, etc. are all diseases caused by genetic mutation.

But we also know that talking about toxicity without doses is hooliganism. Internationally, there is an organization specializing in the study of ionizing radiation. This organization has studied the harm caused by ionizing radiation to the human body, and has made this set of standards into a set of guidelines. Let’s briefly talk about the dose in the guidelines.

For ordinary people,

When a dose greater than 4000 mSv is received in a short period of time, it will cause death in the human body. (millisievert is a unit of measure)

When we receive doses greater than 2000 mSv to 4000 mSv in a short period of time, it will cause radiation disease in humans at this time.

There has been a large-scale nuclear leak in human history: the Chernobyl nuclear accident, when many people present at the time suffered a large number of nuclear leaks in a short period of time, resulting in the first batch of firefighters participating in the rescue. He died within a few days, and the survivors later developed many cancers and leukemias, and their lifespans were greatly reduced.

If we receive a dose of 1000 mSv to 2000 mSv for a short period of time, we will experience problems such as loss of appetite, temporary hair loss, and sometimes vomiting.

When our body receives a dose between 100 mSv and 500 mSv for a short time, the human body has mild symptoms.

Below 100 millisieverts, the human body hardly feels any abnormality.

Therefore, there is an international standard for ionizing radiation exposure, and the single dose of ionizing radiation cannot exceed 100 millisieverts.

So how strong is the radiation from mobile phones?

How strong is cell phone radiation?

Although exposure to a large amount of ionizing radiation in a short period of time can affect human health,

The radiation from mobile phones is not ionizing radiation, but non-ionizing radiation that has no effect on the human body.

Moreover, mobile phones are relatively low in non-ionizing radiation, even far less than the sun's radiation. That is to say, if we are worried that mobile phone radiation will affect our health, then we should be more worried about the amount of radiation from the sun's rays before that.

Because the radiation level of mobile phones is so low, and it belongs to non-ionizing radiation, so even if we put the mobile phone under the pillow at night

It doesn't have any effect on our body either.

In fact, in addition to mobile phones, there are many electronic products with very low radiation, such as microwave ovens, refrigerators, air conditioners, etc.

There are not many ionizing radiations that we can come into contact with in our daily life. They are mainly encountered in hospitals, such as CT. However, the single radiation dose of CT is not high.

The single dose of head CT is only 2 mSv, which is far lower than the international standard of 100 mSv.

We have almost no exposure to other high doses of ionizing radiation, such as atomic bomb explosions, nuclear leaks from nuclear power plants, etc. So in daily life, we don't have to worry about radiation problems.

Summarize

Radiation is divided into ionizing radiation and non-ionizing radiation. A single high dose of ionizing radiation will affect human health. However, almost all the radiation we encounter in our daily life is non-ionizing radiation, including mobile phones. Humans have little effect, the only effect being an increase in temperature.

So, at night, when we go to bed, we put our phones wherever we want.

However, although the radiation of mobile phones has almost no effect on the human body, playing mobile phones at night is not good for the eyes and also affects sleep. Therefore, when you go to bed at night, it is best to wait until you have finished playing with your mobile phone before going to bed.