Magnect Effects on Phone
Does magnet have any effect on cellphones?
According to a source (an old friend doing E.E. research actually) which I found very reliable, if the magnet is powerful, then yes, some metal parts inside might be magnetized and this might alter the performance. Maybe the speaker or mic would malfunction or they might work better. But then again, since the magnetic field is not changing, no current will be induced, and for a nicely shielded circuitry inside the phone, a relatively small magnet would unlikely have any real effect on it. In fact, minuscule magnets are already part of speakers and mics, right?
What do you think? Any scientific/engineering proof or calculation?
According to a source (an old friend doing E.E. research actually) which I found very reliable, if the magnet is powerful, then yes, some metal parts inside might be magnetized and this might alter the performance. Maybe the speaker or mic would malfunction or they might work better. But then again, since the magnetic field is not changing, no current will be induced, and for a nicely shielded circuitry inside the phone, a relatively small magnet would unlikely have any real effect on it. In fact, minuscule magnets are already part of speakers and mics, right?
What do you think? Any scientific/engineering proof or calculation?
posted by Zidni at 6:48 PM
3 Comments:
I think it's because engineers are more business-minded while physicists are more research-minded. Well, not all.
Anyway, during muktamar last year, one brother complained that his hotel card was demagnetized twice by his cellphone.
the cellphone itself is radiating some induced magnetic field (from variable current?) demagnetizing the card, woosh. sooner or later, the long term average is our brainwave being cooked by talking too long on the phone :D
believe me, engineers are doing the research for businesses. they take whatever academics and scientists (including physicists) know into a project, attach time scale and money to the business objective, and improve it over time. sounds like entrepreneurs to me.
engineer: business with scientific knowledge, or scientist with business knowledge.
my 2.5 cents worth. you decide which is which. :)
Zach says: As far as I know magnets shouldn't affect a cell phone at all. If the magnet is stationary relative to the cell phone then it would definitely not affect it. If it was moving then it could create some EMI (electro-magnetic interference), but most cell phones operate above 900Mhz and I don't think anyone is getting a magnet to vibrate anywhere near 900 million times per second.
Jet: I use a VERY STRONG magnet to hold my celphone to the dashboard in my car. The plastic body of phones are usually coated or painted with metallic coatings which create a "faraday cage" that will cancel out RF and magnetic interference. That being said, if an electronic device is NOT protected in this manner it can be affected by magnetic fields. Put a magnet against your TV screen and see!
hm, anymore input?
Post a Comment
<< Home