Re: Why didn't my apple need a screen saver?

[dig@pro-cynosure.cts.com (Doug Granzow)]

mmelez@vax.clarku.edu writes:

>I've had an Apple //e since 1983, with a "monitor ///" monochrome
>monitor attached, and my screen has never been burnt in, even when I left it
>on for up to 12 hours at a time 

You're just lucky, basically.  Screen burn-in comes from leaving a monitor
(or TV) displaying the same image for a long period of time.  This problem
happens a lot in electronics stores where they have a video camera hooked up
to a TV so customers see themselves.  Often the people will look like ghosts
because the background has been burnt in.  Same thing happens a lot in any
business where they use a computer all day -- typically the same screen is
always displayed and eventually it will burn into the screen.  The bright
colors get burnt in, so a black-on-white display could do more damage, but
either way it is going to be noticeable.

>Which brings me to another question:  Why is a black-on-white screen
> considered better for the eyes?

Is it?  My guess would be that black-on-white is used on the Mac only because
it resembles a piece of paper.  Any DTP application will typically have a
black-on-white display.