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#Mon Aug 09 12:00:46 CEST 2010
Text__19gyYKOcEd-WfYQ0GneCwQ_title=Projection Apparatus with Polarization Filter
Text__19gyYKOcEd-WfYQ0GneCwQ_text=<p>Polarization filters separate one plane of vibration from the vibrations in all directions of natural light, so that polarized light vibrates in only one plane.</p>