№ 049 · 05·B5

Spacetime is a field

1915 · General relativity

Idea

05 of 10

Layout

Route B · columns · seed 103

Theme

paper · paper-copy 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

• Fig. 5.1Wall clock (cartel), Jean-Jacques Fieffé, ca. 1745–49
• Fig. 5.2The Fallen Tree, Alexander Cozens Ornament

Format

1680 × 2376 · 1 : 1.414 · AVIF 9 KB / 33 KB / 258 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.