Modern ideas of motion Copernicus Developed the heliocentric system a Galileo Made astronomical observations with a telescope Experimental evidence for description of motion Quantitative study of motion“Modern” Ideas of Motion ◼ Copernicus ◼ Developed the heliocentric system ◼ Galileo ◼ Made astronomical observations with a telescope ◼ Experimental evidence for description of motion ◼ Quantitative study of motion