How to shield against electromagnetic waves?

Mondo Science Updated on 2024-01-31

Rapidly evolving new technologies and changes in social interactions are creating an increasing number of artificial electromagnetic fields**, and exposure to artificial electromagnetic fields in the environment is increasing. From the generation and transmission of electricity, household appliances, and industrial equipment to telecommunications and broadcasting, everyone at home and at work is exposed to a complex mix of weak electric and magnetic fields.

Where there is a power supply, where there is electrical equipment, where there are high-voltage wires within a few hundred meters, where there are underground cables within tens of meters, and even where there are only metal pipes and metal beams, there can be electromagnetic interference as high as tens or even hundreds of milligauss. The intensity of electromagnetic interference often changes irregularly, and there will be considerable fluctuations up and down in a short period of time, and the intensity of electromagnetic interference is often difficult to determine. Electromagnetic waves can enter molecular structures, including proteins, DNA, etc., and directly cause harm to the human body and cause human lesions.

So how do we shield ourselves from electromagnetic waves?In order to reduce the harm of electromagnetic wave radiation, we can take some of the following shielding measures:

1. Use shielding materials: In the area where electromagnetic waves appear, shielding materials can be used to isolate electromagnetic waves. Commonly used shielding materials include metal mesh, copper foil aluminum foil, electromagnetic shielding coatings, anti-electromagnetic wave radiation coatings, etc.

2.Conductive coatings: Coating a layer of conductive coatings, such as conductive paints, conductive adhesives, etc., on the surface of equipment or objects that need to be shielded, can also play a role in shielding low-frequency electromagnetic waves.

3.Conductive cloth: The use of conductive cloth to make shielding or shielding nets can also block low-frequency electromagnetic waves.

4.Grounding: The equipment or lines that need to be shielded are introduced into the ground through good grounding measures, so as to avoid their impact on other equipment or the human body.

5.Filter: Installing a filter on the signal line or power line can effectively filter out low-frequency electromagnetic waves and ensure the purity of the signal or power supply

Related Pages