Where does electromagnetic radiation come from? How to avoid electromagnetic radiation
We live in a world full of electromagnetic waves, which are closely related to daily life and work. From commonly used televisions, mobile phones, computers, induction cookers, and microwave ovens, to antennas, substations, and mobile communication base stations, these devices and facilities all produce electromagnetic radiation. While people gain various conveniences in their work and life, the electromagnetic radiation problem that comes with it has also attracted much attention. So, how much knowledge do you have about electromagnetic radiation? How can one reduce their exposure to electromagnetic radiation? The editor will share with you the analysis of MVG experts.
Where does electromagnetic radiation come from?
Electromagnetic radiation comes from electromagnetic waves, which are invisible and intangible, yet ubiquitous like air. Electromagnetic waves in the living environment can be divided into two categories: natural electromagnetic waves and artificial electromagnetic waves.
Natural electromagnetic waves refer to electromagnetic waves generated in nature. In nature, any object with a temperature above absolute zero, including our human body, emits energy to the outside world, which is what we call "radiation". As is well known, the Earth itself is a large magnetic field, and sunlight, lightning, and other planets can also produce electromagnetic radiation. Humans evolved in this environment.
With the development of science, humans have invented many facilities that use electromagnetic waves to work, which emit electromagnetic waves or generate electric and magnetic fields into the environment. For example, our daily electricity consumption generates extremely low frequency electromagnetic fields; Listening to radio uses radio waves; Mobile phones and microwave ovens use higher frequency microwaves.
This is a widely concerned issue, but it cannot be directly answered as "harmful" or "harmless". At present, the radiation level of electromagnetic waves on the human body follows the standards of specific scientific institutions, and the International Commission on Non Ionizing Radiation Protection (ICNIRP) is the main body responsible for developing this standard. These standards have been incorporated into national legislation to clarify the radiation range of electromagnetic waves.
Therefore, only electromagnetic radiation exceeding the limit standards can cause electromagnetic pollution, which has a certain impact on the environment and human health. It is worth mentioning that many people believe that antennas are the largest source of electromagnetic radiation. In fact, the appliances we use such as hair dryers, mobile phones, routers, and microwave ovens also produce radiation, and the amount of radiation varies under different working conditions.
