1670 in science

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The year 1670 in science and technology involved some significant events.

Botany

• John Ray publishes Catalogus plantarum Angliæ, the basis of all later floras of England.

Earth sciences

• Jean Picard calculates the radius of the Earth to within 0.44% of the modern value.
• Agostino Scilla publishes La vana speculazione disingannata dal senso: lettera risponsiva circa i corpi marini, che petrificati si trovano in varii luoghi terrestri ("Vain Speculation Undeceived by Sense") in Naples, arguing for an organic origin for fossils.

Technology

• The first longcase clock is built in England by William Clement.

Births

• February 25 - Maria Margarethe Kirch born Winckelmann, German astronomer (d. 1720)

Deaths

• March 10 - Johann Rudolf Glauber, German chemist (b. 1604)
• May 21 - Niccolò Zucchi, Italian astronomer (b. 1586)