1545 in science

The year 1545 in science and technology involved some significant events.

Botany

 * Orto botanico di Padova and di Firenze botanical gardens established.

Mathematics

 * Gerolamo Cardano publishes his algebra text Ars Magna, including the first published solutions to cubic and quartic equations.

Navigation

 * Pedro de Medina's Arte de navegar is published in Valladolid, the first treatise on the art of navigation to be published in Europe.

Physiology and medicine

 * Charles Estienne publishes De dissectione partium corporis humani, libri tres, including a description of the venous valves of the liver.
 * Ambroise Paré publishes his first book, a treatise on battlefield medicine, La méthode de traicter les playes faictes par hacquebutes et aultres bastons à feu et de celles qui sont faictes par flèches, dardz et semblables, in Paris.
 * Thomas Phaer publishes The Boke of Chyldren, the first book on paediatrics written in English.

Zoology

 * The giant squid (Architeuthis) is first seen.

Births

 * January 11 – Guidobaldo del Monte, Italian mathematician (died 1607)
 * March – Gaspare Tagliacozzi, Italian anatomist (died 1599)
 * John Gerard, English botanist (died 1612)

Deaths

 * Christoph Rudolff, Silesian mathematician (born 1499)