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<p>[QUOTE=&quot;-jeffB, post: 1296434, member: 27832&quot;]Well, magnets do pose a bit of a hazard, but it&#039;s less than you might think, and decreasing as technology advances.</p><p><br /></p><p>Color CRT monitors would be badly trashed by magnets. There&#039;s a steel mask just behind the face, and a magnet would set up magnetized zones in that mask. Those magnetized zones would bend the tube&#039;s electron beam as it approached, making it hit the wrong phosphor target on the screen. The result: areas of distorted color. Modern LCD displays are completely immune to this effect.</p><p><br /></p><p>Hard drives are relatively well-shielded, and they&#039;re usually not right up against the outside of their enclosure. Hard drives actually <i>contain</i> some of the most powerful magnets you&#039;ll encounter, to drive the arm carrying the read/write heads.</p><p><br /></p><p>The big saving grace of magnetic fields is that they get weaker <i>very</i> quickly as you move away from their source. But if the magnetic stripe on your credit card rubs against a magnet, the distance is pretty close to zero, and the field strength is high enough to trash it.[/QUOTE]</p><p><br /></p>

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