🚀 go-pugleaf

In article <519g9l$9...@sjx-ixn6.ix.netcom.com>,
	a...@ix.netcom.com(ANDREW GRYGUS ) writes:
> In <DxMFKr.Fz....@torfree.net> bb...@torfree.net (Eric Gallas)
> writes: 
> 
>>When doing some television alignment years back, it occured to me, the
>>easiest way to determine the field strength of a magnet was to hold it
>>to the screen of a television (switched on of course), and observe the
>>video effects, perhaps you could be more accure using a TV test generator,
>>and a camera on a tripod to measure the effects.
> 
> Yes, you can do this with a VGA color monitor.  A strong magnet will
> lightly magnetize the dot mask, causing lingering color aberations. 
> Yes, they eventually go away, that's what the degausing coil is for. 

Gotta be careful with this: if the field is too strong you can physically
bend the mask and get it out of alignment.  Degaussing isn't very useful
then...

Of course, there's no problem with mono tubes.

	J