I‘m working on a school project, and it involves electromagnets. The thing is that I want to find a way to block electromagnetic radiation so that the magnets won‘t cause damage to external devices like cellphones.
I doubt that a cell phone would be damaged by an electromagnet, though there are a few things that would, like a compass or the pacemaker for my heart. To block electromagnetic waves, (ie: radio waves), a thin solid sheet of any conducting material, like iron, steel, copper, etc., will block those. For that matter, even fine copper screening will block radio waves if it's grounded. To block magnetic fields takes a little more. Use a sheet of any magnetic material, such as steel. (If a magnet sticks to it, it will block or greatly attenuate magnetic fields.) An especially good material is called Mu metal. It may not be available now. It used to be used to enclose picture tubes and other CRTs, (Cathode Ray Tubes), in TVs, oscilloscopes and other sensitive equipment. Whatever material you use, you would need to make a totally enclosing box to contain it. Good luck!
basically ER is harmful when it is either in UV spectrum or Infrared spectrum so basicaly u need a glass prism which is a good absorber of dese radiations nd wil prevent damage to ur cellphone
12 meters. That is some distance enough so you needn't worry. Any Mattel however the alloy referred to as Mue Mattel is the best. Have the work subject established, but even a thinnest aluminium foil will block out any secondary or tursery EM radiation.
