Lesson plan
Congelation
Congelation (from Latin: , ) was a term used in medieval and early modern alchemy for the process known today as crystallization. In the ('The Secret of Alchemy') attributed to Khalid ibn Yazid ( ), it is one of "the four principal operations", along with Solution, Albification ('whitening'), and Rubification ('reddening'). It was one of the twelve alchemical operations involved in the creation of the philosophers' stone as described by Sir George Ripley ( ) in his Compound of Alchymy, as well as by Antoine-Joseph Pernety in his Dictionnaire mytho-hermétique (1758).
Article summary
Congelation (from Latin: , ) was a term used in medieval and early modern alchemy for the process known today as crystallization. In the ('The Secret of Alchemy') attributed to Khalid ibn Yazid ( ), it is one of "the four principal operations", along with Solution, Albification ('whitening'), and Rubification ('reddening'). It was one of the twelve alchemical operations involved in the creation of the philosophers' stone as described by Sir George Ripley ( ) in his Compound of Alchymy, as well as by Antoine-Joseph Pernety in his Dictionnaire mytho-hermétique (1758).
Key claims
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Discussion questions
- Summarise the article in your own words. Which single claim would you verify first, and why?
- Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
- If two sources disagreed about one of these facts, what would you need in order to trust one over the other?
Bibliography
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Key claims and bibliography are generated from the same tracked claims and sources as the article page.