Horace Heffner wrote: > > On Feb 5, 2006, at 10:13 PM, Harry Veeder wrote: > >> Horace Heffner wrote: >> [SNIP] >>> ...fields do not just appear from nothing and without effect. >> >> Well...when an electromagnet is turned 'on' a magnetic field appears. > > > I am only referring here to the mechanism by which a field builds > from nothing, which is probably just unnecessary nit picking with > regard to your point. When a voltage is applied to a coil the > current builds slowly due to the need to supply energy to the > magnetic field. Also, the field itself, i.e changes in the field > strength due to changes in current, only expands through space at the > speed of light. > > As we accelerate through a Coulombic field a magnetic field "appears" > in our vicinity, but the rate of its appearance corresponds to our > acceleration and thus it builds gradually. > > >> Perhaps there is a construction which can make a gravimagnetic >> field appear. > > The construction which makes a gravimagnetic field appear is > gravicurrent - the motion of mass. Masses in motion experience > different forces due to each other at the some given distance when in > relative motion vs being fixed in those positions, just as charges > similarly experience differing forces. > > Horace Heffner >
I am interested in how gravimagnetic theory may pertain to the motion of a curling stone. When a curling stone is slowly rotating as well as sliding the path of motion tends to "curl" in the direction of rotation. Why this happens remains very controversial but each explanation advanced assumes a unique model of the frictional forces involved. Since gravimagentism is isomorphic with electromagnetism, then then the appearance of a gravimagentic field depends on the relative acceleration or deceleration of the masses. In regards to a stationary Earth, the sliding motion (deceleration) of a curling stone over the Earth generates a relatively weak gravimagnetic field. However if the curling stone is regarded as stationary and the Earth as sliding under the curling stone, then the deceleration of the Earth will generate a relatively intense gravimagnetic field. Add a little rotation to the mix and I have a hunch that the "curl" of curling stone can be explained by gravimagnetism. What do you think? Harry
