Chromatic Reflection Drum
Hinge a 1968 optical drum, place a chiral acetate seed, and develop nine exact reflection-group contact sheets.
More geometry creations

Solstice Courtyard
Walk a geometric year through four stone season gates and measure axial tilt, ideal daylight and solar-noon shadows.

Snell Plumb Facet Lantern
Seat two declared index plaques, tilt one local facet, and tension exact ideal Snell-law ray threads through four slope controls.

Registration Screen Atelier
Overlay measured ideal line gratings and pull proofs of their geometric moiré spacing.

Terminator Shadow Meridian Drum
Set a frozen teaching instant, rotate a declared Sun-vector cam, and classify six synthetic spherical cells while real data stays blocked.

Halo Cold Chamber
Rotate a 3D hexagonal ice crystal, catch refracted rays, resolve the spectral minimum, and build an honest atmospheric halo ensemble.

Throat Ring Embedding Foundry
Forge and gauge one exact Morris–Thorne/Ellis equatorial spatial embedding profile.