Isaac Newton is famous for sitting under an apple tree, and having an apple hit him on the head. This lead to his realization of gravity, one of his 3-laws-of-physics.
Isaac Newton is famous for developing three laws of motion that changed the study of physics. The first law states that an object in motion will stay in motion unless another force acts upon it. The second says force equals mass times acceleration. The third says for every action there is an equal and opposite reaction.
He was sitting under and apple tree. He had an apple fall on his head and discovered gravity. That is what he is most known for. He also has some laws like for every action there is an equal and opposite reaction. He also has a whole bunch of other laws.
Discovering the force of gravity by allegedly observing an apple fall near him and instantly wondering what might have caused the attraction to the earth.
