Observation against the Weight Reduction of Spinning Gyroscopes

Abstract

Recently, Hayasaka and Takeuchi (H-T) reported the anomalous weight reduction of spinning gyroscopes for right rotations around the vertical axis but no weight changes for left rotations. Although we examined the asymmetric weight changes using a gyroscope similar in mass and in equivalent radius to the lightest one of H-T, the observed weight changes, (−0.20±0.35) mg for left and (−0.02±0.33) mg for right rotations, are consistent with zero, and the data for right rotations are not compatible with those presented by H-T.