🔬 Discovery

Stepped leader of lightning

Líder escalonado del rayo

Date
1933-1935 · confidence high
Place
Johannesburg, Gauteng, South Africa
Credited to
Basil Schonland, D. J. Malan and H. Collens
People
👤 Basil Schonland1896–1972
Field
Cosmos & Earth

What was discovered

Using Boys cameras with rotating lenses, they photographed lightning advancing in downward steps before the return stroke. It established the modern physics of atmospheric discharge.

The frequent Highveld storms made Johannesburg a natural laboratory.

What it led to

  • lightning protection based on discharge physics
  • the Bernard Price Institute of Geophysics
  • studies of atmospheric electricity
🕸️ View in the graph

Built on

📄 Original publication

Progressive lightningBasil Ferdinand Jamieson Schonland, H. Collens · Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character · 1934

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