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POLARIZATION BY REFLECTION AT
BREWSTER'S ANGLE








EQUIPMENT
    redball.gif (326 bytes) Black Glass Reflecting Plate
    redball.gif (326 bytes) 6 Volt Lamp
    redball.gif (326 bytes) Polaroid Filter
  



NARRATIVE
            Light reflected at Brewster's Angle (57 degrees) is uni-polar. Adjust the black glass reflecting plate so that the reflected beam makes an angle of 57º with the plate. Project the reflected beam onto a screen. Insert a Polaroid filter (analyzer) in the reflected beam and rotate it until the beam is cancelled.