On Mar 21, 12:23 am, "hanson" <han...@quick.net> wrote: > <snip... snip>"marcus_b" <marcus_bruck...@yahoo.com> wrote: > > Clearly electric, magnetic, and gravitational FIELDS exist in > "empty" space. > > hanson wrote: > > Clearly, when electric, magnetic, and gravitational FIELDS > exist in "empty" space then, by definition, said space is > NOT EMPTY, .... ahahahaha... but contains the mass > equivalent of m = E/c^2 in one of many possible forms... > Thanks for the laughs... ahahahaha... ahahahahanson > > <snip... snip>
In QED, such field forces are 'mediated' by the exchange of particles ... e.g., the force between electrons is mediated by an exchange of photons. Which is hard to explain - an electron supposedly sends out photons which may be 'received' by another electron, but neither electron loses energy. Maybe they just trade photons back and forth. An electron just sitting still somewhere does not radiate, yet it is sending out these perhaps 'virtual' photons which explain the electric field around the electron ... And what happens if when one photon is sent out, the 'receiving' electron suddenly dodges out of the way, so the photon just sails into space and the first electron really does lose energy ? How, if it is just sitting still? Does it lose mass??? Do 'virtual' photons have momentum? Does the sending electron recoil?
