On 3/1/07, Stephen A. Lawrence <[EMAIL PROTECTED]> wrote:
Harry Veeder wrote: If any divergence between inertial and gravitational mass is ever found, however small it may be, it will be a an enormous blow to the validity of GR, because it will imply that gravity is /not/ a fictitious force, after all.
Many experiments have shown differences. Magnets in repulsion drop slower. Some materials fall at different rates. Bismuth was one IIRC, Carbon is another, for instance a carbon sphere and an iron sphere of equal mass will fall at different rates in an atmosphere, the carbon one will fall faster despite being less aerodynamic due to the much larger size! Gyroscopes fall at a different rate. But the largest effect is magnets in (I think always) repulsion which many have shown to fall much slower, as much as 1/3rd slower. I think I also recall mass under compression falls at a different rate.
