A cople of days ago i was in my sciense class and my teacher put his phone inivertaintly nexed to a specker that was connected to his computer. It started to make static noies he could not figer out why. I went up to the specker and put my phone nexed to it and it did notheing.I called someone and it started making noises with my phone. we tried it with a few other phones and got the same results.I was wondering why. I know that phones use microwaves but vary small amounts. I know that a specker works by a elctromagnet geting a elcterical signal from your pnone or computer or whatever and it pushes a nother magnet with the same polarity away to move a bowl shaped thing to make a vibertion in ther air. I thought that maybe the microwaves would mess with the magnitic feild. I dont really know so i was wondering what you guys think

 

Sorry if i had bad grammer i am terrible with this kind of stuff its hard for me to take thoughts from my head and put tem down on paper let alone spell anything right

This: http://electronics.stackexchange.com/questions/39127/why-do-my-speakers-make-a-noise-when-my-cell-phone-gets-a-call

 

probably has the information you desire. I'll see if I can find more info in the morning.

 

Spell Check is your friend(and mine ).

It is electromagnetic induction between the phone and speaker.

Da. You can use ferrite cores to help limit the problem, though in a Science class seems like it could be useful for demonstration.

You could magnetically shield the speaker. Or just buy a shielded speaker http://m.wikihow.com/Shield-Speakers

http://en.m.wikipedia.org/wiki/Electromagnetic_shielding

Edited August 24, 201411 yr by fiveworlds