History

On the Electrodynamics of Moving Bodies On the Electrodynamics of Moving Bodies- Albert Einstein's first paper on relativity, translated here from Annalen der Physik vol XVII 1905 p. 891-921, is of historical interest. Lorentz Contraction and Accelerated Systems Lorentz Contraction and Accelerated Systems- Lorentz contraction in systems undergoing constant proper acceleration is proven to be completely self-consistent in the context of sp… Relativistic Force Transformation Relativistic Force Transformation- Formulas relating one and the same force in two inertial frames of reference are derived directly from the Lorentz transformation of space and t… Geometric Algebra for Physicists Geometric Algebra for Physicists- This is chapter 1 of a book by Chris Doran and Anthony Lasenby on geometric algebra, which is the natural mathematics of spacetime. E=mc² E=mc²- An article from the Wikipedia encyclopedia. Generalized Relativistic Velocity Addition with Spacetime Algebra Generalized Relativistic Velocity Addition with Spacetime Algebra- The general problem of relativistic addition of velocities – and the successive application of noncollinear Lore… Special Relativity Special Relativity- Tutorial explains about the postulates, paradox, simulaneity, time dilation, Lorentz transformation constructions, spacetime wheel, and the Fitzgerald-Lorentz … Time Dilation Time Dilation- The gamma factor and time dilation can be derived using a very simple clock. Einstein Light 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. A Derivation of the Lorentz Transformation From a Simple Definition of Time A Derivation of the Lorentz Transformation From a Simple Definition of Time- The fundamental equations of special relativity are derived with only high school algebra and toy univ… Santa at Nearly the Speed of Light 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 Fer… Quaternions in University-Level Physics Considering Special Relativity Quaternions in University-Level Physics Considering Special Relativity- The quaternions are an expansion of complex numbers and show close relations to numerous physically fundame… Synchronization Gauges and the Principles of Special Relativity Synchronization Gauges and the Principles of Special Relativity- Synchronization functions set the mathematical clocks represented by the Lorentz transformation and resetting thes… University Lectures on Special Relativity University Lectures on Special Relativity- Lecture notes on Special Relativity, prepared by J. D. Cresser, Department of Physics, Macquarie University. 44 pages. How Do You Add Velocities in Special Relativity? 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. Relativity Tutorial Relativity Tutorial- An introduction to relativity using space-time diagrams. Relativistic Contraction Relativistic Contraction- Relativists consider it a very important exercise to have students decide how to measure the length of a rapidly moving object. Special Relativity Lecture Notes Special Relativity Lecture Notes- A standard introduction to special relativity where explanations are based on pictures called spacetime diagrams. Wikipedia: Special Relativity Wikipedia: Special Relativity- Online encyclopedia article. Photonic Crystals Group ICMM Photonic Crystals Group ICMM- Classical waves crystals, photonic crystals, sonic crystals, opals; Madrid, Spain. Photonic and Sonic Band Gap Bibliography Photonic and Sonic Band Gap Bibliography- Reference bibliography for papers on optical and acoustic photonic band gaps. Photonic Bandgap Fibers & Devices Group Photonic Bandgap Fibers & Devices Group- Photonic bandgap optical fiber research at MIT PECS-IV: International Workshop on Photonic and Electromagnetic Crystal Structures PECS-IV: International Workshop on Photonic and Electromagnetic Crystal Structures- Institute for Pure and Applied Mathematics, UCLA, Los Angeles, California, USA; 28--31 October … The Photonic Band Gap The Photonic Band Gap- Research group, part of condensed matter physics, Ames Laboratory, Iowa State University. Photonic Crystal Research Photonic Crystal Research- Group at MIT. TeraTech TeraTech- A forum to actively foster involvement and rapid advancement in terahertz technolgies. The Hattori Group, University of Tsukuba The Hattori Group, University of Tsukuba- Works with terahertz in the areas related to generation of high power THz waves, imaging, and spectroscopy. Riken- Kawase Initiative Research Riken- Kawase Initiative Research- Advanced science institute for terahertz research in Japan. Research includes illicit drug imaging, semiconductor testing and water content of p… New Jersey Institute of Technology New Jersey Institute of Technology- NJIT has been doing terahertz research on developing a synthetic aperture imaging method for interferometric imaging, and adapting the techniqu… Virtual Journal of THz Science & Technology Network Virtual Journal of THz Science & Technology Network- The Virtual Journal of Terahertz Science and Technology is a monthly journal that contains articles that have appeared in a va…