R
Robert Macy
- Jan 1, 1970
- 0
The old dirty trick was somebody walking in with one of them super-magnets.
Magnetic stripe cards erased, CRT monitors changing color...
I do not think there is a natural magnetic effect that big,
unless you are located over an underground railway (tube).
Mains fluctuations?
I once took one of those super space magnets [so strong they can make
a Canadian dime stand on its edge through your hand] and held it close
to my old [favorite] monitor and wow what great color changes. only to
find the effects became permanent! not even ON/OFF cycling did a
thing. Then I remembered how energetic the fields from my cheap pencil
sharpener were, held it close to the screen, sharpened a pencil, and
voila! degaussed the nickel layer on the monitor making the color
better than before! whew! I was very looky I didn't permanently bend
or break that film, too.