PBS
Pbs Learning Media: Relativity and the Cosmos
This illustrated essay from the NOVA Web site introduces the basic concepts of Einstein's General Theory of Relativity and what we know about cosmology as a result.
American Association of Physics Teachers
Com Padre Digital Library: Open Source Physics: Einstein Cannon Model
The path of cannonballs fired near a black hole are computed using the Schwarzschild metric and presented in this visualization, allowing for study of the theory of general relativity. The cannon's angle and the number and speed of the...
American Association of Physics Teachers
Com Padre Digital Library: Open Source Physics: Particle Worldline Model
Simulation exploring the behavior of particles as they approach a black hole using Schwarzschild coordinates.
American Association of Physics Teachers
Com Padre Digital Library: Open Source Physics: General Relativity (Gr) Package
An extensive collection of simulations, activities, and worksheets for exploring relativity. Topics include Newtonian Physics, special relativity, Schwarzschild metric, Rain metric, Kerr metric, and general relativity orbits.
Other
The Black Hole Encyclopedia
Explore an interactive encyclopedia of known and suspected black holes and find out how they are formed. Includes a glossary of terms, movie files and links to black holes in popular movies and books.
University of St. Andrews (UK)
University of St. Andrews: Albert Einstein
A truly complete biography of the great man. Some adequate discussion of his theoretical and scientific work, but the accent here is on his personal life. Many anecdotes, many quotes from him, many references and hotlinks to other...
PBS
Pbs Nova: Relativity and the Cosmos
This well-written explanation of relativity includes animations and pictures which may be helpful in understanding a tough topic.
Massachusetts Institute of Technology
Mit: Open Course Ware: Exploring Black Holes: General Relativity and Astrophysics
College-level physics course focusing on black holes. Course topics include general relativity, astrophysics, and elements of cosmology . Course features include selected video lectures, lecture notes, assignments, and exams.
Georgia State University
Georgia State University: Hyper Physics: Special & General Relativity
This site from the Georgia State University provides an interesting chart form of the ideas of relativity. Column 1 - Idea, Column 2 - Experiment. Each item is linked to its own page of explanation, which is well done. A nice type of...
Georgia State University
Georgia State University: Hyper Physics: Relativistic Momentum
A clear (as these things go) presentation of the calculation of relativistic momentum. Given with a handy calculator that even calculates the % error. The site goes on to Momentum of a Photon, and to Relativistic Energy in Terms of...
Georgia State University
Georgia State University: Hyper Physics: Relativistic Energy
A mathematically understandable presentation of relativistic energy. Parts include Relativistic Energy, Rest Mass Energy, Conservation of Energy, Pair Production, Relativistic Kinetic Energy, and even Kinetic Energy. A couple of...
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: Gr Kerr Wavefront Program
Using the Kerr metric this simulation illustrates the directions of light emitted from an equatorial plane near a rotating black hole.
American Association of Physics Teachers
Com Padre Digital Library: Open Source Physics: Gr Kerr Stone Program
Consider general relativity with this simulation using Kerr metric of orbits in an equatorial plane near a rotating black hole.
American Association of Physics Teachers
Com Padre Digital Library: Open Source Physics: Gr Kerr Light Program
Using Kerr metric this simulation illustrates the path of light emitted from the equatorial plane near a rotating black hole.
American Association of Physics Teachers
Com Padre Digital Library: Open Source Physics: Gr Kerr Exploding Program
When an explosion occurs in the equatorial plane of a revolving black hole objects are released. This simulation illustrates the orbits of those objects in Kerr metric.
American Association of Physics Teachers
Com Padre Digital Library: Open Source Physics: Gr Seeing Program
Using the Schwarzchild metric this simulates the path of light from a black hole also identifying specific time and angle of the light.
American Association of Physics Teachers
Com Padre Digital Library: Open Source Physics: Gr Kerr Wavefront Program
A simulation that uses the Kerr metric to show the distribution of light photon trajectories when near a black hole that rotates. Accompanied by explanatory documentation.
American Association of Physics Teachers
Com Padre Digital Library: Open Source Physics: Gr Schwarzschild Time Program
This simulation uses the Schwarzschild metric to illustrate the local time at points near a black hole in comparison to time measured farther away. Sinusoidal signals are also shown.
American Association of Physics Teachers
Com Padre Digital Library: Open Source Physics: Particle Rate Program
A simulated opportunity to test the Schwarzschild metric as objects orbit around a black hole.
American Association of Physics Teachers
Com Padre Digital Library: Open Source Physics: Particle Exploding Program
Take a look at general relativity with this science simulation illustrating orbits of objects that are the result of an explosion near a black hole measured in Schwarzschild metric. Users are able to adjust the energy from the exploding...
Open Curriculum
Open Curriculum: General Relativity
Read this article to help understand and describe Einstein's general theory of relativity.
Wikimedia
Wikipedia: Albert Einstein
In this Spanish-language entry, grasp a concrete understanding of a complicated man whose discoveries impacted society more than any other scientist. This site chronicles the life and accomplishments of Albert Einstein. It also studies...
Other
Uc Riverside: Twin Paradox
To make sense of this, you have to first see the Twin Paradox: Introduction, which is the special relativity version and is linked to this page. This general relativity explanation views the paradox from a gravitational point of view.