What Happens When You Put a Phone Near a Computer Screen?

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Discussion Overview

The discussion revolves around the effects of placing a phone near a traditional computer screen, particularly focusing on the phenomenon observed when the phone's antenna is moved across the screen. Participants explore the underlying mechanisms, potential risks to the monitor, and the functionality of the degauss feature.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant describes observing an "electric shadowy thing" when moving a phone near a computer screen, prompting curiosity about the phenomenon.
  • Another participant suggests that magnets in the phone may be deflecting electron paths from the cathode ray tube of the monitor.
  • A participant confirms the magnetic effect by testing with guitar pickups and expresses concern about potential damage to the monitor.
  • One participant recounts a negative experience with a color TV, indicating that similar experiments can disrupt the picture quality and speculates about the degauss feature as a potential remedy.
  • Another participant questions whether using the degauss feature frequently is harmful to the monitor.
  • A participant warns against keeping loudspeaker magnets near monitors due to the risk of damaging phosphors from concentrated electron flux.
  • One participant asserts that the degauss feature is safe and can help correct issues caused by magnetic interference, suggesting moderation in its use.
  • Another participant mentions that some monitors may have an automatic degauss function upon startup.

Areas of Agreement / Disagreement

Participants express varying opinions on the effects of magnets near monitors, with some agreeing on the potential for damage while others discuss the utility and safety of the degauss feature. The discussion remains unresolved regarding the extent of risk and the best practices for monitor care.

Contextual Notes

Participants reference specific types of monitors (traditional CRT vs. LCD) and the implications of magnetic interference, but there is no consensus on the long-term effects or safety of frequent degaussing.

billy_boy_999
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have you ever taken a portable phone (i have a hunch that a mobile would work too) and (when it's not on or anything) ran the ear-end (the end with the antenna) across your computer screen? it makes a weird sort of electric shadowy thing...what's happening? :confused:

[i should mention that this is a normal, old-fashioned screen - not a flatscreen lcd]
 
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I'm not sure what you mean exactly, but it sounds to me like magnets in the phone are deflecting the paths of the electrons (remember a basic monitor (not a LCD one) is basically a cathode ray gun behind a luminescent screen
 
magnets - right, i tested this by waving my electric guitar's pickups in front of the screen - you're absolutely right...i wonder if this is bad for my monitor... :rolleyes:
 
billy_boy_999 said:
magnets - right, i tested this by waving my electric guitar's pickups in front of the screen - you're absolutely right...i wonder if this is bad for my monitor... :rolleyes:

I think it most certainly is. I tried similar experimentation with a color TV, and I messed the picture up but good! When I got my computer monitor, I noticed that it had a "degauss" feature. If your monitor has this in the main menu, you might be able to fix any harm you could do, but I've never had the nerve to test that hypothesis.
 
Honestly, I just like to play witht the DeGauss button every once in a while because it looks nifty. Is that bad? (For the monitor, that is)
 
Keep loudspeaker magnets away from monitors, and TV's especially. I believe the resulting concentrated flux of electrons can burn out phosphors.
 
The degauss feauture will not harm your monitor, and in fact helps correct occasional problems of this nature. Just did it myself right now, and my text looks a little clearer I must say. I suppose one would not want to do it 12 times a day, though. Once or twice a month should be just fine.
 
I also have heard that some monitors automatically degauss themselves whenever thay are turned on.
 

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