№ 031 · 03·A3

Fields

1831–1865 · Electromagnetism

Idea

03 of 10

Layout

Route A · diagonal · seed 7

Theme

paper · paper-copy texture

Drawing

Dipole field lines r = L sin²θ for six values of L, on both sides of the axis.

Figures

• Fig. 3.1Equinoctial dial, Thomas Wright, 1740
• Fig. 3.3Oak Struck by Lightning, Badger, 1856., Alfred Capel Cure, 1856
• Fig. 3.4Portable equatorial or equinoctial sundial, Angelus Lusuergh, 1747
• Fig. 3.5Semi Circumferenter, John Potter, ca. 1790
• Fig. 3.6Portable diptych sundial, Paulus Reinman, 1602
• Fig. 3.11Surveyor's Compass, John Heilig, ca. 1800
• Fig. 3.12Franklin's Experiment, June 1752 – Demonstrating the identity of Lightning and Electricity, from which he invented the Lightning Rod, Currier & Ives, 1876

Format

1680 × 2376 · 1 : 1.414 · AVIF 8 KB / 29 KB / 227 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.