Re: overheads (was: Meters for lecture hall)

["RAUBER, JOEL" <JOEL_RAUBER@SDSTATE.EDU>]

What Larry said, also brightness is an issue.  I suppose at somepoint Elmos
(or their equivalent) will obtain close to the same resolution and
brightness of the Overheads, and then they may truly replace them.
Currently the overheads in  my classroom get more use than the Elmos.

Certainly for some applications the Elmos are a welcome addition.  But they
ain't a replacement yet.

Joel

> -----Original Message-----
> From: Larry Smith [mailto:Larry.Smith@SNOW.EDU]
> Sent: Wednesday, April 18, 2001 10:51 AM
> To: PHYS-L@lists.nau.edu
> Subject: overheads (was: Meters for lecture hall)
>
>
> At 10:02 AM -0400 4/18/01, Michael Edmiston wrote:
>
> > Therefore I am completely aware that the cost of using TV
> cameras in class
> > is prohibiting some people from doing it.  However, I
> maintain it will
> > eventually replace the "overhead projector" and I have
> decided not to invest
> > any more of my effort into tools for overhead projectors.
>
> My comments have nothing to do with projection meters per se,
> but aside
> from the cost, there is another reason I think overhead
> projectors won't be
> replaced by TV cameras or document cameras: the overhead
> projectors have a
> much greater resolution.  I love my document camera (Elmo)
> for many things
> and use it often.  It has some flexibility overhead
> projectors don't (for
> example I teach HP calculators by putting the calculator on
> the Elmo), but
> for fine detail diagrams I've yet to find anything as good, cheap, and
> convenient as the overhead transparencies.
>
> Larry