from JTolan Media1:

Epic Gravity Experiment

VIDEO:

The gravity model is put to the test. Will it hold up? This is how it works: I align the telescopes optical axis to the same distant target from a few locations varying in horizontal distance from the target by slightly over 1 mile. The target is a tower at 54 miles average distance. The elevation angle of the optical axis of the telescope is measured with a high accuracy inclinometer. The experiment is designed and the locations chosen to produce results outside the measurement error bounds. Gravity is a vector field, meaning it has a magnitude and direction. Here we try to measure and determine if the gravity vector direction is changing with distance, because the current theory says that it should, it diverges away from the center of the planet.