← Index · 05·B2 · № 053

Poster 05·B2 for idea 05, “Spacetime is a field”: an orbit that does not close, tracing a rosette.

№ 053 · 05·B2

Spacetime is a field

1915 · General relativity

Idea
05 of 10
Layout
Route B · hero · seed 101
Theme
paper · paper-fold texture
Drawing
r = 1 / (1 + e cos kφ) with e = 0.55 and k = 0.86 over nine turns: an ellipse whose closest point advances every orbit (the effect that moves Mercury's orbit, hugely exaggerated).
Figures
Format
1680 × 2376 · 1 : 1.414 · AVIF 11 KB / 33 KB / 141 KB
Use
© 2026 Rantasalo & Co. Oy. CC BY-NC-ND 4.0: share unchanged, with credit, non-commercially. Photographs and textures: public domain (CC0), The Metropolitan Museum of Art Open Access.