October 27 – Caleb Threlkeld publishes Synopsis Stirpium Hibernicarum .....Dispositarum sive Commentatio de Plantis Indigenis praesertim Dublinensibus instituta in Dublin, the first flora of Ireland.[1]
For clocks, the gridiron pendulum is developed by English clockmaker John Harrison, as a pendulum that compensates for temperature errors: a grid of alternating brass and steel rods is arranged so that the expansion due to heat is dissipated.[2]
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