1665 AD ROBERT HOOKE MICROGRAPHIA ON SNOWFLAKES
Robert Hooke's engraving of snow crystals from Micrographia, printed at London in 1665, the first major published work of observations made through a microscope. Hooke noted that whenever the crystals took a regular form, they always branched into six principal arms, among the earliest scientific descriptions of snowflake symmetry to appear alongside Kepler's 1611 pamphlet and Descartes's 1637 account.
The card
- Date — 1,665 AD
- Where — Printed by J. Martyn and J. Allestry, London, England. 51.5074, -0.1278 — site
- Evidence grade — WEB-PHOTO
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Works Cited
- Source, Title, Publisher, Year.