01337nam a22001937a 4500 20240508082435.0 240508b |||||||| |||| 00| 0 eng d 0031-921X Williams, Hollis A “Perpetual Motion Machine” Powered by Electromagnetism (Journal Article) Washington : American Association of Physics Teachers , , January 2024 47–49p. The Physics Teacher Volume 62, Number 1, January 2024 ***______{For Hard Copy, Please visit Library.}________*** Abstract: “Perpetual motion” is a hypothetical type of motion that continues forever without any external energy input contributing to the system. Students should know that this is generally impossible because of energy losses due to friction or other nonconservative forces, or because some assumption has been made that violates the first or second law of thermodynamics (or both). The first law states that the total energy of an isolated system remains constant over time, and one of the most common formulations of the second law states that the entropy of an isolated system over time cannot decrease. Electromagnetism| Newtonian mechanics| Magnetic materials https://doi.org/10.1119/5.0102604 PER 0 0 0 0 RIEBPL RIEBPL 2024-05-08 0 2024-05-08 08:24:58 2024-05-08 PER 45769 45768