How to Utilize an EMF Shield

Imagine it’s the early 1800s and electricity is the new big thing. Every scientist worth his sodium is messing around with it, either finding ways to use it as a fuel source or zapping dead corpses to “reanimate” them. Michael Faraday, meanwhile, is dropping an electrically charged metal ball into a pail of ice water, which is hooked up to an electrograph. It confirms his suspicions: there is no charge on the inside of the pail, only on the outside. Most scientists would just nod and say “interesting” while scribbling in their notebooks. But it’s the 1836 and science is crazy, so he covers a room in metal foil, tosses an electrograph inside, and then blasts it with electricity. As with his previous (safer) experiment, there is no electrical charge. In doing so he creates the Faraday Cage which is, essentially, the first EMF shield.

Faraday Cages are basically hollow conductors. The more common ones you see in science experiments look like giant boxes with metallic mesh around them. They work by distributing the EMF (electromagnetic frequency) around the exterior of the cage; this can be anything from electricity to radio waves to microwaves. Because the cage is grounded, the charge is distributed around the exterior of the cage and the interior is protected from the harmful effects (i.e. fatal electricity) of the outside. Inside the cage cell phone signals, radio waves, static, and other EMF waves are all cancelled out, making it the most effective EMF shield out there. The principle of the cage is very simple, and so a wide range of DIY Faraday Cages can be found online.

Faraday Cages are surprisingly simple to make. In fact, many websites have detailed instructions on how to create your own Faraday Cage. The most common reason for constructing one is to be prepared in the event of a nuclear explosion. No, the cage won’t save you from the blast like Indiana Jones in a lead-lined refrigerator, but it will shield you and your electronics from the EMP (electromagnetic pulse) that follows. For a less apocalyptic scenario, our sun is capable of sending out a giant EMP wave called a Coronal Mass Ejection. EMP waves knock out electronics, but since the cage is an EMF shield, the wave of radiation will simply dissipate around the cage. Of course, the effectiveness of the cage’s protection depends on its construction. Different metals, such as copper or aluminum, and even the size of the holes on the mesh also affect its ability to act as an effective EMF shield.

The concept behind the Faraday Cage is so simple that many everyday devices mimic the cage’s principles. This is why you won’t fry inside of a car that’s struck by lightning, and also the reason why you lose cell phone reception inside an elevator. Interestingly, the microwave in your kitchen is a reverse Faraday Cage, keeping the EMF waves trapped inside while protecting the exterior. Modern technologies allow for compact EMF shields that can protect you from EMF waves. This way you don’t have to strap yourself into a giant metal cage while using your laptop. It’s a simple concept with a wide range of applications. The cage is, quite simply, the ultimate EMF shield.

This Article was written by Jacques Lem. Visit our site at http://codefreedom.org/ and http://codefreedom.org/category/financial-software/ for more details.