American Association of Physics Teachers
Com Padre Digital Library: Open Source Physics: Special Relativity on Rotated Graph Paper Model
A representation of Minkowski spacetime diagrams using graph paper that is rotated, showing the world lines of three stationary observers with light clocks.
American Association of Physics Teachers
Com Padre Digital Library: Open Source Physics: Simultaneity Spacetime Diagram
Manipulate variables in order to observe the effects of relative motion on events such as an explosion and the time at which its light signal reaches a destination.
Stanford University
Stanford University: Conventionality of Simultaneity
This site from Stanford University is on the topic of simultaneity in relativity.
Massachusetts Institute of Technology
Mit: Open Course Ware: Courses: Physics: Introduction to Special Relativity
College-level electrical physics course highlighting Einstein's Special Theory of Relativity. Course introduces the physics of Lorentz contraction, time dilation, the "twin paradox", and E=mc2. Course features suggested readings,...
Wikimedia
Wikipedia: The Black Hole
This site examines the black hole as an object in astrophysics. Delve into this comprehensive resource that covers this concept from its history, to qualitative physics, the reality of black holes, mathematical physics and more.
American Association of Physics Teachers
Com Padre Digital Library: Open Source Physics: Twin Paradox Program
This model permits manipulation of variables in order to observe the effects of time dilation on twin objects, one moving and one not, as shown in a spacetime diagram.
American Association of Physics Teachers
Com Padre Digital Library: Open Source Physics: Relativity Metric Program
Graphical visualization of how the relative motion of two events affects their spatial and temporal separation in special relativity.
TED Talks
Ted: Ted Ed: The Fundamentals of Space Time: Part 1
In this first lesson of a three-part series on space-time, hilarious hosts Andrew Pontzen and Tom Whyntie go through the basics of space and time individually, and use a flip book to illustrate how we can begin to look at them together....
TED Talks
Ted: Ted Ed: Einstein's Theory of General Relativity
How are spacetime, dark matter and gravity related? In celebration of the centennial of Einstein's theory of general relativity, this video breaks it down. [3:04]
University of Wisconsin
The Why Files: Albert Einstien
A resource to help understand how Einstein's ideas helped mold modern science.
Other
Mrao: Imaginary Numbers Are Not Real
This site presents a tutorial introduction to the ideas of geometric algebra. Gives an outline of geometric algebra and discusses the geometric product, imaginary numbers, and more.
American Association of Physics Teachers
Com Padre Digital Library: Open Source Physics: Simultaneous Events Program
Simulation showing how relative motion affects event order in special relativity. Manipulate the relative speed of two simultaneous events and observe the results.