Methodology

​Testing:
0. After the box is constructed place it in a dark room next to the controlled light source. 
1. Control measurements must be taken using two unfiltered plexiglass sheets
     1a. Expose box to light for 30 minutes and record data
2. Two filters oriented in the same direction
     2a. Expose box to light for 30 minutes and record data
3. Move the operable filter 15º and take measurements. Repeat until the filter is rotated 90º
    3a. Expose box to light 30 minutes and record data for each position.
    3b. Allow box to reach ambient room temperature before conducting each experiment