Flat earth grifter Jeran Campenella is most famous for confirming the earth curves on the Behind the Curve documentary when he created a test to try and “prove flat earth”. It didn’t go as he required and when the results matched the globe and contradicted the flat earth he said “Interesting”. This page contains the details of this test.
There is a camera on one side and an assistant, Enrique, holding a bright light 3 miles away. In the middle, there is a single board with a hole cut in it. The documentary included a diagram that was incorrect since there were not two boards. The details of the experiment as told by an eye witness are listed below.
The camera, the hole in the board, and the light are all 17 feet above the water. Remember, in the actual experiment, there was just a single board in the middle. If the earth is flat, the light should be seen through the board. The light was never seen when it was held at 17 feet high.
With the camera still at 17 feet high and the hole in the board at 17 feet high, Jeran used the 8 inches per mile squared formula to predict a 6 foot drop over 3 miles. Jeran predicted that the light needed to be 23 feet above the water. The problem is that the board in the middle had a hole at only 17 feet. This hole would block the light’s path for a light held 23 feet above the water.