About this Simulation

This interactive simulation models how a point light source produces irradiance patterns and shadows on a screen. Learners adjust source intensity, distance, and screen position to observe how light spreads, intensity decreases with distance, and shadows form. Real-time calculations and visualizations reveal the physics governing light propagation and energy distribution.

Learning objectives: Understand how irradiance depends on distance from a point source | Explore the inverse square law relationship in light intensity | Investigate how geometry and screen position affect shadow formation and brightness patterns