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#Mon Aug 09 11:51:18 CEST 2010
Text__o226oKObEd-WfYQ0GneCwQ_text=The polarisation direction of a light wave can be represented as the plane in which it   vibrates. Individual light quanta also have a polarisation. It is measured with   polarisation filters. When a filter is aligned with the polarisation direction of a light  quantum, it passes through and can be registered by a detector. Conversely, when the  filter is perpendicular to it, it does not. 
Text__o226oKObEd-WfYQ0GneCwQ_title=What is Polarisation?