Large-format slide projector: Difference between revisions

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reword heating issue (large slides aren't required because of heat, they're what the projector is for)
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[[File:Ravensburg Konzerthaus PANI-Projektor 01.jpg|thumb|PANI-Projektor, a large-format slide projector in the [[Ravensburg]] [[concert hall]]]]
A '''large-format slide projector''' (also often called '''large-format projector''' or '''large-image projector''') is a kind of [[slide projector]] for large image projection which has a very powerful [[light source]] (up to 12 thousand watts using [[arc lamps]]). Therefore,The itlight is necessary tosource usegenerates a largelot slideof formatheat toeven protectwhen the slidefiltered materialto fromonly overheatingvisible duringlight; the projectionprojected process (even when the lighttransparency is filteredprotected tofrom onlyoverheating visibleby lightthe andheat thebeing slidedistributed isacross cooledits withlarge strongsize, slideand cooling fans). Slide formats include 18 × 18 cm (7.1 × 7.1") or 24 × 24 cm (9.4 × 9.4").
 
==Projection art==