🛠️ Invention or technique

Mollweide projection

Proyección de Mollweide

Date
1805 · confidence high
Place
Leipzig, Germany
Credited to
Karl Mollweide
Field
Cosmos & Earth

What it is

An equal-area pseudocylindrical map projection, used mainly for world and celestial-sphere maps, that sacrifices angle and shape accuracy for correct area proportions. Popularised in 1857 by Jacques Babinet under the name homalographic projection.

Published by mathematician and astronomer Karl Mollweide in 1805; also known as the Babinet or homalographic projection.

What it led to

  • thematic world maps requiring correct areas
  • 19th-century star atlases using the 'homolographic' variant
  • the basis of later hybrid projections such as Goode's homolosine
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Made possible

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Sources✓ verified 2026-09-28