Galileo – Physics from Video

Measuring physics usually needs lab equipment: photogates, motion sensors, or a stopwatch and many repeats. Most students and teachers only have a phone. Galileo turns a video of something moving into a physics measurement with an honest error bar. You upload a clip, say what moves ("wooden block") and what you know (a length, a mass). SAM 3.1 segments and tracks the object in every frame. Muse Wonder then works like an experimental physicist: it reads the tracks and the frames, picks a physical model, fits it with real fitting tools, tests alternative laws against each other by BIC, checks the residuals, and writes a lab report with every step of its reasoning. Every number comes from the tools, not from the model's memory. On a 5-second University of Toronto lab video of a rigid pendulum, given only "33 cm from the pivot to the centre of mass" and no calibration from the picture, Galileo measured g = 9.803 ± 0.089 m/s²: 0.04% from standard gravity and inside its error bar, from 70 seconds of analysis costing about $0.18. It handles pendulums, springs, free fall, projectiles, ramps and domino chains, and can write and test its own laws for anything else. Each run gives an on-screen result and a downloadable PDF lab report.