| C-Ship: A short overview of special relativity, filled with relativistic ray traced images. Explains relativistic effects using a theoretical spaceship. |
| E=mc²: An article from the Wikipedia encyclopedia. |
| E=mc² before Einstein: According to University of Perugia historian of mathematics Umberto Bartocci, Olinto De Pretto published the famous formula E=mc² two years before Albert Einstein in a paper titled "Ipotesi dell’etere nella vita dell’universo" (Hypothesis of the Essence of the Universe). |
| E=mc² was an Italian's idea: The University of Perugia historian of mathematics Umberto Bartocci claims that a Swiss Italian named Michele Besso alerted Einstein to the writings of Olinto De Pretto who then published Pretto's mass-energy equation without giving credit. |
| Einstein Light: A multimedia tutorial on Special Relativity. The introductory level takes 10 minutes, but has links to over 40 explanatory pages giving greater depth and breadth. |
| Henri Poincaré: A Decisive Contribution to Special Relativity: Henri Poincaré set up all the basic concepts of special relativity several years before Einstein published On the Electrodynamics of Moving Bodies (Annalen der Physik vol XVII 1905 p. 891-921). This is the short version of the story. |
| How Did Einstein Discover Special Relativity?: Dr. John Stachel speculates on how Einstein arrived at SRT. Dr. Stachel is Professor of Physics Emeritus and Director of the Center of Einstein Studies at Boston University. |
| How Do You Add Velocities in Special Relativity?: Here is the formula for adding velocities in special relativity when motion occurs in a single direction. |
| How Stuff Works: Special Relativity: The major principles of special relativity (SR) are discussed in an accessible way, via 5 segments, to help you understand the lingo and theories involved. |
| Is Travel Faster Than Light Possible?: Individual photons, when tunneling through a quantum barrier, can apparently travel faster than light. |
| Jim Doyle's Special Relativity Pages: A growing collection of pages on special relativity, including Special Relativity in under 15 Minutes! |
| Relatively Simple: Special Relativity made Relatively Simple offers information and experiments about special relativity. |
| Relativistic contraction: Relativists consider it a very important exercise to have students decide how to measure the length of a rapidly moving object. |
| Relativity in its Historical Context: The discovery of special relativity was inevitable, given the momentous discoveries that preceded it. |
| Relativity Tutorial: An introduction to relativity using space-time diagrams. |
| Santa at Nearly the Speed of Light: An estimate of the speed and distances covered by Santa Claus on Christmas night. The physics is unassailable. The article is hosted on the Fermi National Accelerator Laboratory website. |
| Special Relativity: A brief overview of the theory of special relativity, and how it pertains to particles at SLAC (Stanford Linear Accelerator) |
| Special Relativity: A unit for an online relativity textbook explaining special relativistic mathematical physics. |
| Special Relativity: Tutorial explains about the postulates, paradox, simulaneity, time dilation, Lorentz transformation constructions, spacetime wheel, and the Fitzgerald-Lorentz contraction. Page includes some animated illustrations. |
| Special relativity article: From the free encyclopedia Wikipedia. |
| Special relativity lecture notes: A standard introduction to special relativity where explanations are based on pictures called spacetime diagrams. |
| Special Relativity simulator: Warp is a program that illustrates the appearance of fast moving objects due to special relativity. |
| The Twin Paradox in a Spatially Closed and Bounded Universe: Spatially compact spacetimes break global Lorentz invariance and define absolute inertial frames of reference. |
| Time Dilation: The gamma factor and time dilation can be derived using a very simple clock. |
Classical
