I don't know what I may seem to the world, but, as to myself, I seem to have been only a boy playing on the sea shore, and diverting myself in now and then finding a smoother pebble or a prettier shell than ordinary, whilst the great ocean of truth lay all undiscovered before me.
Using crude water clocks to time balls rolling down inclined planes, Galileo searched for and found a description of how bodies fall. His law of falling bodies, however, wasn’t a fundamental law of nature. Within half a century it was superseded by a deeper insight into nature – Newton’s universal law of gravity. Through the genius of Newton, the force of gravity,
was revealed ...