wish i coud benefit from being here by asking you about (MAGNETS) does it effective to perform as a blocker against rf and microwavessignals. - by meaning - if i put a magnet in 200 METER SQUARE AREA does it capable of shield the area and prevent the rf and the microwave signals from entering it and reflect it away hope i could benefit from your experience . LOT OF THANKS , WAITING FOR YOUR REPLY.

Hello ahmed,

No, there is no such effect. Several magnetic fields in one area add in the same way that force vectors being applied to an object add to find the net force on the object. The Earth has a magnetic field. That does not prevent sunlight reaching the Earth's surface. Light is part of the spectrum of electromagnetic radiation (as is rf and microwave signals).

I hope this helps,


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Steve Johnson


I would be delighted to help with questions up through the first year of college Physics. Particularly Electricity, Electronics and Newtonian Mechanics (motion, acceleration etc.). I decline questions on relativity and Atomic Physics. I also could discuss the Space Shuttle and space flight in general.


I have a BS in Physics and an MS in Electrical Engineering. I am retired now. My professional career was in Electrical Engineering with considerable time spent working with accelerometers, gyroscopes and flight dynamics (Physics related topics) while working on the Space Shuttle. I gave formal classroom lessons to technical co-workers periodically over a several year period.

BS Physics, North Dakota State University
MS Electrical Engineering, North Dakota State University

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