When you start talking doomsday scenarios, one that frequently pops up (at least with the team here at APE Surevival) is the EMP. Designed as a weapon to completely disable electronics using an Electromagnetic Pulse, the wave from such a blast is potentially powerful enough to wipe out electronic devices across an entire continent. Luckily, an event at this magnitude has yet to happen, but it pays to be prepared. In the aftermath of an EMP life as we know it would completely change. It's rather romantic to consider a simpler time where we all go back to living off the land, but a disaster at this scale would set us humans back even further. For the most part, we no longer have the skills and even raw materials to survive off the grid, which leaves us with only one option. Protecting our electronics from such a blast. This is where the Faraday cage comes in. Invented by Michael Faraday in the mid-1800s, a Faraday cage is designed to mitigate the effects of an electromagnetic pulse, shielding whatever electronics you have stored inside. At the most basic level, it's simply a box that has an electrically conductive outer layer. It works because this outer layer reflects and absorbs incoming energy, building an opposing energy field that safeguards what you've got stored inside. Like your set of walkie talkies, a solar charging kit, or a laptop. And building one isn't altogether difficult. The trick behind a Faraday cage relies on the tendency for energy to flow over the skin of a conductor, which means that you can wrap a box in multiple layers of heavy-duty aluminum foil and the surface area will absorb an EMP charge, even though it seems to be only a thin covering. You can use any type of metal for this, but aluminum foil is readily available and cost effective. Today, we're going to use a metal garbage can to make an insulated Faraday cage.
You will need:
- 1 metal garbage can
- 5-10 rolls of heavy-duty aluminum foil
- 1-2 rolls of saran wrap (depending on the size of the items you want to shield)
- Cloth to wrap each individual item (I repurposed a few old t-shirts)
- An assortment of cardboard boxes of various size
- The electronics you want to protect