1581 in science

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The year 1581 in science and technology included the following notable events.

Geophysics

• Robert Norman publishes his observations of magnetic dip in The Newe Attractive (London).

Medicine

• Roderigo Lopez becomes the physician-in-chief to Queen Elizabeth I of England until his death by execution, having been found guilty of plotting to poison her.

Births

• October 9 – Claude Gaspard Bachet de Méziriac, French mathematician (died 1638)
• Edmund Gunter, English mathematician (died 1626).
• approximate – Gaspare Aselli, Italian anatomist (died 1626).

Deaths

• Agatha Streicher, German physician (born 1520).