PHYS 284 Lecture Notes - Lecture 4: Copernican Revolution, Physical Law, The Moons
Document Summary
The history of the universe is essentially the interplay between matter and energy. This interplay began in the big bang and continues today in everything -from the microscopic giggling of atoms to collisions of galaxies. Understanding the universe depends on understanding how matter responds to the ebb and flow of energy. Only a few physical laws govern the movements of everything, from atoms to galaxies. The copernican revolution, initiated the discovered of these laws. Galileo deduced some of laws by his experiments. But it was sir issac newton that who put all the pieces together, into a simple laws describing both motion and gravity. First we must understand, speed, velocity and acceleration. Speed: is the rate at which moves or distance per time ex) 10 meters/second. Velocity: speed and direction ex) 10 m/s, due east. All falling objects accelerate at the same rate (not counting friction of air resistance)
