The electromagnetic spectrum characterizes all types of radiation by frequency. Longer wavelengths produce radiation from sources including radio waves, microwaves, infrared radiation, and visible light. Shorter waves are more intense and operate at a greater frequency, emitting more radiation as a result. These waves can be dangerous and include ultraviolet (UV) waves, x-rays, and gamma rays. Different EMF shields are used for each form of radiation.
Low frequency electromagnetic fields are found lingering around everyday appliances, laptops, cell phones, tablets, televisions, gaming consoles, GPS navigation systems and more. While the overall frequency of these fields is lower in comparison to high frequency waves, the fields still give off radiation. To protect against low frequency radiation, EMF shields have been introduced to give users peace of mind while operating their technological devices, allowing them to be safe in doing so.
Low frequency EMF shields are usually made from conductive materials and reduce the field by canceling the current, refracting, reflecting or redirecting the radiation from its surface. Shielding devices are available for laptops, desktop computers, and cell phones.
Some devices have built-in EMF shields to protect themselves from other electromagnetic fields nearby. This is referred to as electromagnetic interference (EMI) and shielding allows devices to work properly and avoid interference with surrounding electromagnetic fields. These shields work within the electronics to insure their performance and use primarily reflecting techniques. While built-in EMF shields help the operation of devices, they typically are not for protecting the user from harmful electromagnetic radiation. This is why other physical shields may be beneficial for a user’s health.
EMF shields can be made from various materials, but are generally constructed from sheet metal, metal screens, carbons, composites and metal foam. The material, along its thickness, size and shape, determines the amount of radiation it is able to reduce. Other effective shields against low frequency radiation include metallic paints, engrained with copper or nickel, to coat an enclosure around an electrical device. Furthermore, as a precautionary method, frequently measuring magnetic fields in the home using testing tools can be helpful in ensuring EMF shields are working.
For higher frequency radiation, EMF shields are also available. In fact, newer buildings often incorporate architectural shields to protect its inhabitants from electromagnetic radiation. Some methods of shielding include shielding paints, as previously mentioned, which can be applied to walls. Conducive meshes, mattings, foils and fabrics are other options that can be incorporated into buildings for added security. It is recommended that these shields cover entire areas, not just windows and be grounded. Before any high budget shielding begins, it’s important to assess exposure and measure radiation levels prior to construction.
EMF shields are vital to protect oneself from the dangers of electromagnetic radiation. Whether its low frequency radiation emitted from your laptop or larger EMF fields surrounding your home, shielding can give homeowners peace of mind knowing they have defense against radiation and all effects it can have on the body.
This article was written by Kristy DeSmit, on behalf of DefenderPad, a leading supplier of EMF shields and protection solutions. To learn more about electromagnetic field radiation and shielding, visit WiseGeek.