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🔭 Rotating Liquid Mirror Paraboloid and Focal Length (2D cross-section)

2D cross-section of a spinning liquid-metal telescope mirror: the free surface is a paraboloid with focal length g/(2 w^2). Exact ray tracing shows the focus, off-axis coma and the contrast with a rigid sphere.

Fluid Dynamics & Aerodynamics2DModerate60 FPS📱 Mobile-adapted🤖 ChatGPT⇄ 3D version

⚙ Under the hood

liquid mirror telescoperotating fluidparaboloidfocal lengthcoma

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