Given two straight bars of steel identical in every respect with the exception that one of them is magnetized, in what way can it be determined which piece is magnetized? No third article of any kind is to be used. You may not even balance one or both bars on a finger or fingernail, but you may hold the bars in your hands.
-- A.S.E. Ackermann, Scientific Paradoxes and Problems
Table of Contents -- 7/5/97
