Varies As you rotate the polarizer, the laser's intensity... somewhat Partially linearly Therefore, the laser's polarization is... polarized As your rotate the polarizer, the LED's intensity... Doesn't change Not linearly Therefore, the LED's polarization is... polarized Remains When the polarizers are oriented in the same direction, compared to one polarizer, the approximately light... the same Completely When the polarizers are oriented perpendicularly, compared to one polarizer, the light... disappears Reduces in When the polarizers are oriented at 45 degrees, compared to one polarizer, the light... intensity When you put the third polarizer at 45 degrees, compared to two perp. polarizers, the light... Brightens Completely When you put the third polarizer parallel with the first, compared to 45 degrees, the light... disappears When you put the third polarizer parallel with the second, compared to 45 degrees, the Completely light... disappears