Robin van Spaandonk wrote: > In reply to Harry Veeder's message of Thu, 22 Feb 2007 14:11:03 -0500: > Hi, > [snip] >> Michel Jullian wrote: >>> >>> The tube doesn't oscillate because the process Robin described is >>> continuous. >> >> For this to be plausible the tube could never be neutral. In fact, if the >> tube's charge were to fall below some minimum value the tube's weight will >> cause it to drop. >> >> Harry > > As long as power is supplied, it isn't neutral. Since the mass of the tube(s) > is > by definition less than that of the whole lifter, as power is applied, the > tube > will lift first, then with application of additional power, the whole lifter > will rise. >
Yes, but how can you be certain (other than by a the "laws of physics" argument) that the tube is not contributing a novel lifting force when the power exceeds a certain value. Harry
