~ Early Web Links ~

The String Coffee Table is a collaborative group blog hosted at the University of Texas at Austin, bringing together physicists to discuss string theory, loop quantum gravity, conformal field theory, and related advanced topics. Posts make heavy use of MathML for rendering equations, and contributors include researchers like Urs Schreiber and Lubos Motl, making it a rich academic resource for cutting-edge theoretical physics.

William J. Beaty, an electrical engineer from Seattle, explores the fascinating physics of traffic jams, treating highway congestion as fluid dynamics and demonstrating how a single driver can dissolve traffic waves. The site features animations, videos, experiments, and links to academic research on 'jam-absorption driving,' making it a surprisingly deep dive into an everyday phenomenon.

Created by physicist E. Butikov of IFMO, this collection presents interactive Java applets simulating remarkable three-body gravitational motion problems, including the famous figure-eight periodic orbit and restricted three-body scenarios. It bridges classical Newtonian mechanics and celestial mechanics with hands-on simulations suitable for students and advanced researchers exploring planetary system dynamics.

David Tong, a professor at Cambridge University, offers a comprehensive collection of free lecture notes covering nearly every area of theoretical physics, from classical mechanics and electromagnetism to quantum field theory and string theory. The notes are aimed at undergraduates and graduate students and represent a genuinely deep academic resource, with dozens of individual courses each spanning multiple topics.

The Open Source Physics project, supported by NSF and the AAPT, provides free computational curriculum resources including simulations, modeling tools, and student worksheets designed to help learners explore physical phenomena through computer modeling. Highlights include the Tracker video analysis tool and Easy Java Simulations (EJS) framework, making it a comprehensive hub for physics educators and students at all levels.

PhysicsPages is a detailed self-study companion covering classical mechanics, quantum mechanics, electrodynamics, relativity, string theory, and more, written with honest, jargon-free explanations that avoid the dreaded 'obviously' of typical textbooks. The creator presents rigorous, math-heavy notes designed for university students or independent learners working through structured physics topics.

James Ziegler's authoritative site hosts SRIM and TRIM, widely used scientific software packages that calculate the stopping and range of ions in matter for research and engineering applications. The site includes downloadable software, textbooks, tutorials, a historical review spanning 100 years of ion stopping research, and resources covering topics from cosmic ray soft errors to neutron damage.

Robert G. Brown, a physicist at Duke University, shares an extensive collection of free online textbooks, physics study materials, poetry collections, philosophy essays, and beowulf cluster computing resources. The site is a sprawling intellectual hub covering everything from GPL software tools to metaphysics, all freely licensed under an open public license.

Maintained by Stony Brook University's physics department, this extensive link directory covers physics preprints, online journals, conferences, jobs, data sources, and institutions. Researchers and students will find hundreds of curated links spanning Physical Review, arXiv, SLAC SPIRES, astrophysics journals, and community resources like Fermilab and the Nobel Foundation.

HyperPhysics is a sprawling educational reference site from Georgia State University covering virtually every topic in physics through an interconnected web of concept maps and concise explanations. Visitors can explore everything from classical mechanics and thermodynamics to quantum physics and relativity, with formulas, diagrams, and worked examples throughout.