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Blackbody Radiation (2D)

A 2D companion: drag the temperature slider and watch a live Planck spectral-radiance curve reshape in real time, a glowing disc change color to match, and Wien's displacement law and the Stefan-Boltzmann T^4 law update live.

Physics & Mechanics2DModerate60 FPS📱 Mobile-adapted🟠 Blender⇄ 3D version

Every hot object glows, and the colour and spectrum of that glow depend on temperature alone. This 2D companion integrates Planck's law numerically, derives the CIE colour of the glow, shows the classical ultraviolet catastrophe, and checks Wien's law, Stefan-Boltzmann and the visible fraction against independent formulas, with Blender-rendered star and hot-iron sprites.

⚙ Under the hood

Interactive 2D blackbody radiation: Planck spectrum on a log wavelength axis, CIE colour of the glow, ultraviolet catastrophe overlay, Wien and Stefan-Boltzmann readouts, Blender-rendered star and hot iron bar, five numerical checks.

physicsblackbody radiationplanck's lawwien's displacement lawstefan-boltzmann lawthermal radiation2D

2D · HTML5 Canvas 2D · 60 FPS target · runs fully client-side, no install