Georgius Agricola, De Re Metallica, Triangulation

Numéro d’image : 12654350
Georgius Agricola, De Re Metallica, Triangulation
Woodcut from De Re Metallica. Triangulation applied to a tunnel being driven to meet a shaft. HDE is a cord suspended over the shaft, HFG is a second cord connecting to the mouth of the tunnel, and KL is a third cord to help establish the triangle. This provides a ratio for determining the tunnel's length. Georgius Agricola (1494-1555) was a German scholar known as the father of mineralogy. His book De Re Metallica, published in 1556, was a treatise on mining and extractive metallurgy, illustrated with woodcuts illustrating processes to extract ores from the ground and metal from the ore, and the many uses of water mills in mining. Agricola described and illustrated how ore veins occur in and on the ground, making the work an early contribution to the developing science of geology. It was also an important chemistry text for the period and is significant in the history of chemistry.
Licence : Droits gérés
Crédit: Science Photo Library / Science Source
Taille de l’image : 3010 px × 4650 px
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Property Release : Non requis
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