Social Sciences and History / Unit 4 SSH 0317 short lesson, about 20 seconds
From Geocentrism to Newton
Captions available
The idea
Humanists dissatisfied with ancient authors began observing for themselves: inductive reasoning. Ptolemy's geocentric spheres gave way, and Newton's Principia of sixteen eighty-seven gave one law of gravitation for planets and pebbles.
In practice
Medicine lagging under Galen's humors; Vesalius and Harvey advancing anatomy.
Where people slip
The shift was cultural more than technological. A mechanical universe suggested a clockmaker God: deism.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
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