Erlebnisland Mathematik | Technische Sammlungen Dresden | Junghanstraße 1-3 | 01277 Dresden
Erlebnisland Mathematik

Dust Circles

A cloud of dust is copied identically onto two glass panes. Move the panes slightly relative to each other. You will suddenly see circular patterns.

No trick is behind this effect, but rather a theorem from geometry of planar motion.

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staubkreise