electromagnetism

According to our present understanding there are 4 fundamental laws of the universe… strong force, weak force, electromagnetism, and gravity. This waterfall behind me is an example of the force of gravity. As the water breaches the top, it’s drawn by gravity to cascade over the front panel and down into the catchment tank where a pump works against the law of gravity to push the water back to the top. This endless cycle of falling water leaves little doubt as to gravity’s indisputable force.