Vision Learning
Visionlearning: Plate Tectonics: The Origin of Plate Tectonic Theory
Discover Alfred Wegner's ideas relating to continental drift and seafloor spreading which are both evidence to the concept of plate tectonics.
PBS
Pbs Learning Media: Einstein: How Smart Was He?
This essay from the NOVA Web site explores the impact Einstein made on physics and most everything we know about the cosmos.
Georgia State University
Georgia State University: Hyper Physics: Michelson Morley Experiment
At this site from the Georgia State University is where the proof all starts. One must understand this experiment to have any confidence in relativity. Here's the experimental setup and a summary of the data.