1581 in science

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).