1617
ID: 3464
Rosicrucian panic/enthusiasm across Europe (1617-1620) - Over 200 pamphlets published - Descartes searches for Rosicrucians in Germany
ID: 3464
1617
ID: 4457
Napier's bones (Napier's rods) invented - numbered rods for multiplication, division, and square roots
ID: 4457