Special Relativity

• principle of relativity
• the price: relativity of simultaneity
• Gedankenexperiment--light clock
• other consequences:
  length contraction
  time dilation
• relativity, mass, and energy
  nonrelativistic vs ultrarelativistic motions
• experimental tests: proton-proton collisions in the ATLAS detector at the CERN LHC

General Relativity: Relativistic Gravity

• Big Al
• Principle of Equivalence
  an especially nice animation of the rocket experiment
• The first evidence for light bending: 1919 eclipse, reported to the Royal Society and in the New York Times
• More recent evidence on galactic scales: rings, galaxy clusters here and here