viewer/projector?

["John Bell" <johnb@xxxxxx>]

Mike Amundson:
> Would it be possible to make a portable
> mini-projector from my viewer?  I could envision a polarizing filter
> sandwiched with the slide and then possibly a halogen bulb for better
> brightness.  Focus would have to be adjusted by simply moving the unit
> back and forth until sharp.  What do you think?

John Bercovitz: 
> Should be fine but very dim.  Do remember that ordinary wall paint will
> depolarize light so you will need to spray paint your wall with aluminum 
> paint.

So a fully "portable" projector should consist of Mike's viewer, polarizing
filter, a can of aluminum spray paint, and a plaster wall. Or a pair of good
running shoes in case a wall's owner objects to its new color. ;-) 

John Bell
johnb@xxxxxx
(attends Stereo New England mtgs)


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