FrameCalc
Physics calculators with plots.
FrameCalc is a browser toolkit for special-relativity kinematics, teaching simulations, and standard fusion formulas — with plots and LaTeX copy.
What’s included
Calculators and simulations are free. Pro is for PDF, workspace, sweeps, dataset export, and code.
Kinematics workbench
Collisions, decays, Lorentz, Compton — free, with LaTeX copy.
Free
Simulations
Kepler, Schwarzschild, TDSE, Ising — teaching-resolution playback.
Free
Fusion formulas
Bosch–Hale ⟨σv⟩, Child–Langmuir, Coulomb barrier, labeled yield estimate.
Free
Pro
PDF, workspace, sweeps, dataset export, CAS snippets, course-pack JSON, history.
Paid
Kinematics
Lab ↔ COM collisions, decays, Lorentz, Compton, Doppler.
Simulations
Teaching-resolution time-stepping with on-screen diagnostics.
Fusion formulas
Bosch–Hale reactivity, Child–Langmuir current, Coulomb barrier, and a labeled yield estimate.