Linear Polarized Filters
|6H10-Place two filters on top of one another then rotate the screens. When the screens are at 90 degrees to each other, no light will pass through. 6H20-Look at a reflective surface like the floor through the filter and rotate. you will notice the reflection gets dimmer. 6H30- Place two filters on top of one another such that there is no light passing through. Now inset a third in between these filters. Notice how light now passes through.