5 Nov
2001
5 Nov
'01
4:11 p.m.
Most of 'em were computer-science grad's so they probably didn't experience
science/physics/math ... etc.
Those old monitors didn't have degaussing coils in 'em did they? I never notice
that obvious sound on 12" types.
I, of course, wasn't, since I always got pretty good grades in those courses.
However, I was never concerned with the ill effects of setting up an Apple in
the way the manufacturer (who apparently sold media, etc, as well) recommended.
Dick
----- Original Message -----
From: "John Lawson" <jpl15(a)panix.com>
To: <classiccmp(a)classiccmp.org>
Sent: Monday, November 05, 2001 10:43 PM
Subject: Re: Stacking Apple ][ stuff
ground
set
On Mon, 5 Nov 2001, Richard Erlacher wrote:
> The monitor seems to interact with the drives when the monitor is turned on.
It
> depends, I suppose, on the monitor, but I've
got the IIe with the dual drive
box
> between it and the color monitor and from time to
time, e.g. when I turn on
the
> monitor while the computer has been powered up
but the monitor has been
powered
down, e.g.
when I go upstairs to get a sandwich or answer the doorbell, the
drive runs up and the diskette is partially unreadable afterward.
Can you say: "Automatic Power-On Degaussing Coils?"
Click - BRRMMMMMMMmmmmm..... goodbye disk data!
>
> I'm told by more experienced Apple owners that it's a good idea to (a)
> the disk drive boxes in the case of the old
aluminum-cased Apple][ drives
and
> (b) put a sheet of grounded ferrous metal between
the monitor and drives. I
> don't know whether this helps, as I've simply stopped turning off the
monitor
when I go
away.
Aluminium = non-magnetic Iron = magnetic in terms of marginal
shielding from external fields.
>
> Apparently one of the guys got a metal bracket of the sort sometimes used to
> a printer off the desk, and set his monitor on it
in order to lift the thing
up
> so he didn't have to crane his neck down to
see the display, and his
problems
with the disk
drives were diminished, which caused him to investigate.
Magnetic fields diminish as the square of the distance from the
originating source.. so seperating the monitor will mitigate the problem,
depending on the intensity of the field and the seperation distance.
Question: Were *all* of youse guys asleep in science and/or physics? ;}
Cheers
Nikola Tesla