Willem de Sitter (1872–1934)

Born 1872 CE, died 1934 CE.

Willem de Sitter (6 May 1872 – 20 November 1934) was a Dutch mathematician, physicist, and astronomer. He is known for the de Sitter universe, which is a cosmological model that was named after him.

Text from the Wikipedia article Willem_de_Sitter, licensed CC BY-SA 4.0.

Everything else in 1872 CE

HistoryLayer draws the world as it was in any year from 123,000 BCE to 2026. Move the slider and the borders redraw for that year; the map carries 23,890 events, 12,790 people, 837 wars and 13,183 cities, each one readable in place. Signing in is optional and lets you keep what you find.

HistoryLayer is an interactive map of world history: pick any year from 123,000 BCE to 2026 and the borders, events and people of that moment are drawn for you. It needs JavaScript to draw the map. The guide, the sources and licences and the privacy page are readable without it.

HistoryLayer

1914CE

World Wars

123,000 BCE2026 CE

54 stops — one per surviving map on file, evenly spaced drag the pin · ←→ steps one stop the same 54 stops by true elapsed time ↑

Map & filters

Show on the map

Filter

Colour by

Polity Empire

Willem de Sitter (1872–1934)

Saved · 0