Re: Twin paradox revisited ll

"Sue..." <suzysewnshow@xxxxxxxxxxxx> wrote in
news:1185226392.317796.307770@xxxxxxxxxxxxxxxxxxxxxxxxxxxx:

On Jul 23, 3:01 pm, bz <bz+...@xxxxxxxxxxxxxxxxxxxx> wrote:
"Sue..." <suzysewns...@xxxxxxxxxxxx> wrote
innews:1185211838.607102.222450@xxxxxxxxxxxxxxxxxxxxxxxxxxxx:


.....

The fact that i allows easy polar/rectangular coordinate conversions
results in something that is quite real and measurable.

What makes you think it is unreal?

Measure the current and voltage on an induction
motor at the same time and compute the power.
Is it real ?

Yes. The instantaneous voltage times the instantaneous current at any
instant of time is real.


Measure the current now and voltage at a specific
imaginary time on an induction
motor and compute the power.
Is it real ? Are both the times real?

It doesn't matter if you call the current i or I, if you multiply
instantaneous current time instantaneous voltage you get the instantaneous
power.

If you want to computer the average power, you can integrate the absolute
value of the instantaneous power or you can use the rms voltage and current
modified by the phase shift or power factor.


Extra credit:
Will Michael Jackson live longer if he sleeps inside
a stator where the time different? :o)

Only if he sleeps with his mummy. But people would say 'Tut Tut' if he did.

.... The 'i' and 'j' are quite real, no matter how
imaginary you imagine they are].

In the formalism of complex numbers we
do not express belief or disbelief.

Formally space-time axes are imaginary.
http://www.bartleby.com/173/17.html
Formally nearfield reactance is imaginary.
http://en.wikipedia.org/wiki/Wave_impedance


When you wear your formal, you can stop clocks.

.....


See Carol here:
http://uw.physics.wisc.edu/~wonders/Van_derr_Graaff4
Her hair is coming out at the roots and she isn't even
moving yet.

You may get a charge out of such citations and pictures but they do
not effect the path taken through space-time. Travel at high
velocity DOES effect the path.

Normally I would ask 'high velocity wrt what body'. But
your statements elsewhere reveal you are assuming
an inertial ether and calling it 'space-time'.

Actually, I thought we were referencing everything to Terra's body.

No... part of the thought experiment includes Stella's
view as Terra moves away.

While it may appear from Stella's viewpoint that Terra moves away, only
Stella's ship expels reaction mass.

Unlike the farmer that was outstanding in his field, Stella is smart enough
to know that she does NOT accelerate the universe [and Terra] every time
Stella hits the 'fire' button on her control panel. NB, the farmer thought
the universe was moving back and forth as his horse plowed the field.


.....






--
bz

please pardon my infinite ignorance, the set-of-things-I-do-not-know is an
infinite set.

bz+spr@xxxxxxxxxxxxxxxxxxxx remove ch100-5 to avoid spam trap
.

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