Strong Equivalence Principle: Violations without Failure a PPN Classroom Framework with a Brans–Dicke Counterexample . Sch. Jo. Phs. Ed [Internet]. 2025 Dec. 6 [cited 2026 May 25];6(4):240-7. Available from: https://cahaya-ic.com/index.php/SJPE/article/view/2174