A Faraday cage, or Faraday shield, is a structure made of conductive materials like copper or iron that blocks electromagnetic fields. Originally, these were actual cages, but now the term covers any enclosure that prevents electromagnetic radiation from getting inside.
Before Michael Faraday established the scientific principles, others were already exploring similar concepts. In 1755, Benjamin Franklin conducted experiments showing that an electrically charged can only affects other charges outside it.
The metal box of a microwave acts as a Faraday cage. If you put your cell phone inside (but don’t turn it on), you won’t get a signal.
The rooms housing MRI scanners are designed as Faraday cages to block unwanted electromagnetic waves.
Elevators and other metal-framed spaces can mimic the effect of a Faraday cage, causing signal loss for cell phones and other devices.
Many watches have built-in Faraday cages to protect them from electromagnetic radiation, which can cause malfunctions.
Not exactly. For something to function as a Faraday cage, it needs to be a closed metal object. Car windows allow electromagnetic fields to pass through. However, the metal roof and frame of a car do conduct electricity safely to the ground, offering protection during lightning storms.
Venturing into nature without a cell signall. This sounds liberating, but think twice before you do this!
Thanks to ASTRID, the emergency services can be reached anywhere. We will go into this in more detail.
Being accessible at all times and places is expected. What does this mean for your business?
Mercuron, a Belgian company, specializes in wireless communication. With our expertise in radio waves, we create ASTRID and mobile phone signal amplifiers from the ground up.
