Helios

Most students never see physics happen, they only see formulas; not every school has a lab, but every student has a phone. I built an app where you snap a photo of any projectile, pendulum, or incline problem, handwritten is fine, or describe an experiment, and GPT-6 Astra turns it into a live browser experiment you can play with. I do not trust the AI alone: deterministic code compares the measured result with the textbook formula, reruns it with gravity 10% higher to catch hardcoded answers, and sends errors back to Astra to fix, up to three rounds. Type "now on the Moon" and watch the ball fly higher while the check runs again.