[caption id="attachment_38942" align="alignleft" width="150" caption="The market for ultra short throw projectors has grown in 2011, experts say."][/caption]

Not every college classroom is a vast lecture hall. There are dozens, sometimes hundreds, of small rooms on campus that serve as meeting spaces for small class sections—confined areas where projectors can be placed just a couple feet away.

Casting a large, clear picture on a screen or wall is rarely a challenge in the most spacious of lecture halls; professors can place their projectors as far back into the room as needed...

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