Learn about phlogiston theory in chemistry history. Discover what phlogiston is and how scientists discovered the true nature of combustion. Phlogiston Theory This entry was posted on December 6, 2023 by Anne Helmenstine (updated on May 13, 2025)
Learn how to calculate circle revolutions and the distance circles travel. Also discover the coin rotation paradox and its applications. Circle Revolutions and the Coin Rotation Paradox This entry was posted on December 5, 2023 by Anne Helmenstine (updated on January 14, 2026)
Get arsenic facts. Learn about the element's properties, uses, and sources. Find out how arsenic poisoning works. Arsenic Facts – Element As or 33 This entry was posted on December 3, 2023 by Anne Helmenstine (updated on December 28, 2024)
Learn about piezoelectricity and the piezoelectric effect. Get examples of piezoelectric materials and learn how piezoelectricity works. Piezoelectricity and the Piezoelectric Effect This entry was posted on December 2, 2023 by Anne Helmenstine (updated on January 17, 2024)