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Well, it seems to me that an overhead projector is about 500 bucks
and a video camera + projector is more like $1,500. Is there an
advantage to the camera/projector approach?
Eric Siegel
esiegel at nyscience dot org
On Dec 17, 2007, at 12:21 PM, Paul Orselli wrote:
> ISEN-ASTC-L is a service of the Association of Science-Technology
> Centers
> Incorporated, a worldwide network of science museums and related
> institutions.
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> Hi Eric,
>
> I've used various types of overhead projectors years ago in
> exhibitions to let kids project moire patterns, for example.
>
> However, there is a tradeoff between having to use timers, extra
> cooling fans for unit heat, and ultimately, bulb life.
>
> Given those concerns, is there any reason for you not to use a
> video camera + projection setup? Any ambient light issues related
> to overhead projection would be similar to those with video
> projection.
>
>
>
> On Dec 17, 2007, at Monday, Dec 17 12:05 PM, Eric Siegel wrote,
> in part:
>
>> We are checking out overhead projectors for a project we are
>> working on. Are there issues with letting kids have access to
>> these in an exhibition setting? (heat, etc?)
>
>
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