The Scientist Lounge
Interactive
Physics
Free
About
Interactive science simulations you can play with directly in your browser. No installs, no accounts — just physics.
Explore topics like projectile motion, collisions, pendulums, springs, and circular motion. Pick a simulation, adjust the sliders, and watch the physics unfold in real time. Each simulation includes live readouts and a companion article explaining the science.
Built for students, teachers, and anyone curious about how the physical world works.
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New experiments added weekly. Built with vanilla JS and Canvas 2D.