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Physically based rendering from first principles
Imad Rahmoune2026-03-03
Open original article →Summary
This is an excellent interactive article that explores physically based rendering from foundational physics principles. It covers the nature of light, from historical theories to quantum electrodynamics, and explains electric and magnetic fields via Maxwell's equations. The behavior of electromagnetic waves and their visible spectrum are detailed. Finally, it discusses light generation processes like incandescence and electroluminescence, essential for realistic computer graphics lighting models.
Key Ideas
Light explained through physical and quantum models
Maxwell's equations link electricity and magnetism
Electromagnetic waves described with amplitude and frequency
Light generation methods: incandescence and electroluminescence