This video shows the pendulum wave machine functioning normally and with the black light shining on it. It also displays different angles which can exemplify different patterns
Painted weights (This allowed the pattern to stand out when illuminated with a black light.)
Measuring the length of string (Black string was utilized to ensure when the lights were off they were no longer visible and only the weights could be visualized.)
Measuring the string (Each string was one inch shorter than the next).
Side view
Front view (The cascading effect of the weights)