Browser calculators for special-relativity kinematics, teaching simulations, fusion, and dozens of libraries for solving hard problems across physics and mathematics. Copy LaTeX, compute data, simulate. Pro model adds PDF, CSV, and code export.
I built this browser physics calculator after repeatedly encountering confusing numerical problems and parameters that took me a while to compute using code or math softwares. The workbench is perhaps the most detailed tool: plots θ_lab vs θ* as you change beam energy; equal-mass elastic gives θ_lab^max = π/2 regardless of KE — easy to verify on the plot. Several libraries of data for relativity, kinematics, fusion, quantum mechanics, EM, and more exist for easy use and export. I would like to see some feedback on UX or bugs if you have anything you want to point out!