The Universal Law of Gravitation

The universal law of gravitation was discovered by Newton in the seventeenth century. Before Newton’s discovery, no one knew of the existence of such law. The year was 1665; the month was August. Newton, then a 23 year old Cambridge University student retired to the solitude of his family’s farm. The university was closed for two years because of the Greta Plaque. There is a story that Isaac Newton was inspired by the fall of an apple, to consider whether gravity was responsible for the motion o