EL-MONGY, . S. A. Novel Arithmetic Equations for Mass Energy Equivalence, Newton’s Rings Radius, Wavelength and Speed of Light, Fine Structure Constant and Ideal Gas Law Correlated with eπ Based on Sayed’s Theorem. **JOURNAL OF ADVANCES IN PHYSICS**, *[S. l.]*, v. 20, p. 48–52, 2022. DOI: 10.24297/jap.v20i.9214. Disponível em: https://rajpub.com/index.php/jap/article/view/9214. Acesso em: 28 mar. 2023.