The sun in the Church : cathedrals as solar observatories / J.L. Heilbron.
Between 1650 and 1750, four Catholic churches were the best solar observatories in the world. Built to fix an unquestionable date for Easter, they also housed instruments that threw light on the disputed geometry of the solar system, and so, within sight of the altar, subverted Church doctrine about...
Full description
Saved in: