"Puppet_Sock" <puppet_sock@[EMAIL PROTECTED]
> wrote in message
news:08c173de-e5a0-419c-9040-6b3c499a79ae@[EMAIL PROTECTED]
Jun 3, 6:00 pm, "Neil B." <neil_del...@[EMAIL PROTECTED]
> wrote:
[snip]
> I think it will take some tricky work to get this paradox resolved,
> assuming it can be through what we already know.
That let's you out then. You just fluffed off Lenz's law without
even thinking about it.
Example: Why does a large electric motor starting up cause your
lights to flicker? Answer: Lenz's law. Does an electric motor involve
the transfer of angular momentum? Answer: yes.
Socks
"Puppet_Sock" <puppet_sock@[EMAIL PROTECTED]
> wrote in message
news:08c173de-e5a0-419c-9040-6b3c499a79ae@[EMAIL PROTECTED]
Jun 3, 6:00 pm, "Neil B." <neil_del...@[EMAIL PROTECTED]
> wrote:
[snip]
> I think it will take some tricky work to get this paradox resolved,
> assuming it can be through what we already know.
"That let's you out then. You just fluffed off Lenz's law without
even thinking about it.
Example: Why does a large electric motor starting up cause your
lights to flicker? Answer: Lenz's law. Does an electric motor involve
the transfer of angular momentum? Answer: yes.
Socks"
Socks: I wasn't fluffing off Lenz's law as such, it's just that you didn't
explain how to relate it to solving this particular problem. I did however
think about L'sL some more, and it turns out it might indeed solve my
paradox. I originally figured we could move the solenoids far away from
the line charge, cut off their currents (or rotate them entire, etc.) so
we could return them for "starting over" by turning the current back on,
etc. I had reasoned: since there's an "infinite" line the effects at
different distances would cancel out, and so starting and stopping the
currents would cancel out too. Example: start up the currents at a
separation y1, then move the solenoids to y2 = 10y1. Then cutting their
currents yields an induction E field only 1/100 of that at the original
distance (the E field circles around a changing solenoid drop as 1/r^2, in
pro****tion to the "A" field that was around it from E = [Coulomb term] -
dA/dt.) But do a geometric scale up of each *angle* from the solenoids,
before and after the move: pro****tionally 10 times bigger a
"corresponding" length element delta x of the line charge is affected, and
each such element is 10 times farther from the origin to get delta L = Sum
r cross f delta t. Hence, the angular momentum transferred to the line
charge is the same in each case, but opposite. But I later realized that
the total would be infinite anyway, so that perspective is flawed. It is
sometimes misleading to employ a "infinite" entity to make a point. I
suspect now that a detailed analysis using some specified length of the
"line charge" would work out OK, and the AM developed in the solenoids
would be comped out by the smaller AM transferable from induction at a
distance. Hence, you were right after all but I couldn't get a handle on
your specific point.
Some PSs: Do you know why sometimes I reply to a comment, and the ">"s
show up to distinguish previous comment, and sometimes (like your case
this time) they don't?
Also, in the mid 90s I got the "Socks" cat doll (and in a White-House
based package) modeled on the Clinton's former cat! One of my conservative
friends offered to buy it, to use for target practice ... Well, times have
changed, or have they?
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