art of nature
Fulgurite (or fulgarite) is named after the Latin word ‘fulgur’ which means thunderbolt. The reason for this is that fulgurite is created when lightning strikes sand. The high temperature of lightning, air-temperatures over 30,000 °C have been measured, is far higher than the sand melting point of 1800 °C. The silica, which makes up the sand, fuses together at this extreme heat. Creating the so-called lightning glass or lightning sand. The glass that is formed in this way is called lechatelie
fulgurite ( = lightning + sand)
Bird Attacking Gladiator Mosaic -- A beautifully detailed Roman mosaic of a wading bird attacking a gladiator. The mosaic is in what was the garden of the Villa Sileen near Leptis Magna in northern Libya.
'Troiana Iris,' Albrecht Durer, This Beautiful Work is So Contrary to Most of Durer's Works I Had to Pin It. If, You Take the Time to Look Him Up You'll See What I'm Referring To. His Great Works of Art, Deal With Conflict, Heavy Emotion, Masses of People and Many Bible Commissions & This Iris So Singular, Simple & Lovely Shows Another Side to the Master Painter.
Troiana Iris (Detail) - Albrecht Dürer
Datura Stramonium. American medical botany v.1 Boston:Cummings and Hilliard,1817-1820. Biodiversitylibrary. Biodivlibrary. BHL. Biodiversity Heritage Library
Maxfield Parrish's "Riverbank" perfectly evokes the lassitude of a cool pool of shade in the dusty golden late summer California. The oak tree's branches shelter just like a tin roof in a winter downpour.
A Michael McCurdy print from "The Man Who Planted Trees"--all the hope of the future in a bag of acorns. Here the woodcut represents the perfect union of subject matter and media.
Trochilidae — Ernst Haeckel