Department of Physics and Astronomy, University of Rochester, Slide 20
Before Einstein:
Newton's laws of motion and gravity.
¥Newton's laws of motion
assume that space is three dimensional.
¥Newton's laws of motion
assume that space is absolute: the dimensions of objects are the same for all
observers, regardless of their motion.
¥Newton's laws of motion
assume that time is absolute: the duration of events is the same for all
observers, regardless of their motion.
Sir Isaac Newton, a portrait by
Kneller in 1702.
National Portrait Gallery in
London.