Chronology | Current Month | Current Thread | Current Date |
[Year List] [Month List (current year)] | [Date Index] [Thread Index] | [Thread Prev] [Thread Next] | [Date Prev] [Date Next] |
On Aug 31, 2016, at 9:00 AM, John Denker <jsd@av8n.com> wrote:
In the early going, the electric field of the two leptons, as
observed from far away, is zero. That's because they have opposite
charges, at initially the same position. The reaction on the proton
is initially zero, as it should be.
"action-reaction" concept is most simple and fruitful only in
classical and static situation, in which case the notion of their
starting and ending together is meaningless.
In more realistic situations involving dynamics this notion does not
work or is, at best, not straightforward.
Consider, for instance, an electron-positron pair production from
collision of 2 neutral particles in the field of a distant proton.
Each member of the newly-born pair immediately feels the field of
the proton and experiences the corresponding action,
but the proton will start feeling their field (and respective
reaction) much later.