Material Detail

Chronoscope is a free collection of more than twenty browser-based interactive simulations exploring time in physics, including time dilation and the twin paradox, black hole horizons, entropy and the arrow of time, cosmic expansion, and quantum delayed choice. It is aimed at upper secondary students (Years 11-12, or US grades 11-12) and introductory undergraduates, for classroom use or self-study. Each simulation opens with a prediction question, runs the governing equations live, and states the model's equations, sources and limits. Every claim is tagged as established, contested or speculative, so mainstream physics stays clearly separated from open questions. Three guided tours of about 20 minutes each sequence the simulations. Teachers can create class links, collect completion codes and print worksheets. The site is free, has no accounts or advertising, and works on phones. The simulation code was written with an AI coding assistant under the author's direction. A companion maths page documents every model's equations, constants and a worked example, each checked against the simulation by an automated test suite.

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