The '''Kaufmann-Bucherer-Neumann experiments''' were an attempt to measure if and how the inertial mass of an object changed due to an increase in its velocity. The [[Theory of Relativity]] predicts a substantial change in the inertial mass based on a substantial change in velocity, while [[Newtonian mechanics]] does not expect any such change. | The '''Kaufmann-Bucherer-Neumann experiments''' were an attempt to measure if and how the inertial mass of an object changed due to an increase in its velocity. The [[Theory of Relativity]] predicts a substantial change in the inertial mass based on a substantial change in velocity, while [[Newtonian mechanics]] does not expect any such change. |