Mitylene (Asia Minor) hectae electrum coins, ca. 500 B.C. (image public domain) By John Saul – WHY WAS ONE WORD USED FOR TWO SUBSTANCES? In former times the word electrum designated two substances which to us are very different. One was amber and the other was an alloy of gold […]
By Patrick Hunt – Albrecht Durer is an artist famous for multiple endeavors, including woodcut and painting media. But he is also a pioneer illustrator of European star charts, especially his 1515 collaborative work for making a pair of woodcuts of the northern and southern hemisphere night sky images that […]