Bob Hughes wrote:
> 
> Apparently no refraction actually gets used since the image is the same with
> or without the glass lens.  Only that photons show up, of course, in the
> media air.

A projector, that works just fine without a lens - you should invent such a
thing for real life :-)

I wonder how sharp the text appears in the media, normally you would expect all
structures to appear in a conic shape expanding from the light source.  

Christoph

--
Christoph Hormann <chr### [at] gmxde>
Homepage: http://www.schunter.etc.tu-bs.de/~chris/

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