Sulfuric acid the Hellenistic alchemical works of Zosimos of Panopolis, in the treatise "Phisica et Mystica", and the Leyden papyrus X. Medieval Islamic era alchemists, Jābir ibn Hayyān (c. 721 – c. 815 AD, also known as Geber), Razi (865 – 925 AD), and Jamal Din al-Watwat (d. 1318, wrote the book "Mabāhij al-fikar wa-manāhij al-'ibar"), included vitriol in their mineral classification lists. Ibn Sina focused on its medical uses and different varieties of vitriol. Sulfuric acid was called "oil of vitriol" by medieval European alchemists because it was prepared by roasting "green vitriol" (iron(II) sulfate) in an iron retort. There are
Guess What We Learned in School Today? Guess What We Learned in School Today? Guess What We Learned in School Today? (also released in the United States as I Ain't No Buffalo) is a 1970 film directed by John G. Avildsen and written by Eugene Price. The movie premiered at the Cannes Film Festival in 1970 and opened in the United States in 1971. Although it was shot before Avildsen's "Joe", it got distribution afterward due to "Joe's" success. Tagline: "Love American style with a touch of X." Parents in a small, conservative community want to ban sex education in schools, labeling it a Communist plot. However,