Re: Fraud in Experimental and Theoretical Science
- From: "PD" <TheDraperFamily@xxxxxxxxx>
- Date: 7 Feb 2006 06:16:35 -0800
Spaceman wrote:
"PD" <TheDraperFamily@xxxxxxxxx> wrote in message
news:1139064977.281533.250240@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
| Ready to go on, spaceman? You seem to be losing attention span daily.
PD,
You are going to be using unitless math to decribe a universe that has
no unitless realities.
You are lost in unitless land and can't even tell why unitless itself is
just plain wrong for describing the physical reality.
OK, let's summarize where we are so far:
1. We determine if two events are simultaneous by checking their times
on two nearby clocks that we have synchronized.
2. We know how to synchronize clocks that have been set down at rest
relative to us, by carrying a signal from one clock to the next and
back (or walking from clock to clock) and by checking the difference in
times going there and coming back.
3. To measure a length, we have to take position measurements of both
ends of that length simultaneously.
4. Experiment has shown that the speed of light is the same in both
directions, regardless of the reference frame in which we do the
experiment.
Now we've also just learned that
5. Two different reference frames will disagree on what's simultaneous
and what's not. Since it's not possible to mark a *special* frame that
is physically "better" than any other frame, it's not possible to
determine whether two events are "really" simultaneous or not.
Simultaneity is an accident of which reference frame you're taking the
measurement. Simultaneity is not a property that has "actualness".
OK, let's go back to our original ovibert for now. Remember, we
situated ourselves to be stationary relative to the guidestrip, and we
made a bunch of marks on the guidestrip, and we synchronized clocks all
along the guidestrip using electrical signals, and using those clocks,
we're measuring the length of the passing ovibert by letting the clocks
fire flash lamps simultaneously while we watch with the cameras. The
simultaneity of those flashes is defined by our synchronization of the
clocks, according to the procedure we agreed on. It's important to
measure both ends of the ovibert simultaneously, because we agreed
that's the only way the length measurement makes any sense.
So we do all that, and we fire the lamps when the ovibert goes by, and
we find the marks closest to the ends of the ovibert, and we get a
length measurement that way, and we send a pony express rider to chase
down the ovibert and tell the fellas on board what we measured.
The pony express rider returns a while later with a reply:
"Problem: You didn't follow the procedure for measuring length
properly. We on board the ovibert were watching when the lamps fired.
You were supposed to fire the lamps simultaneously. The lamps were not
fired simultaneously. The lamp at the front of the ovibert fired first,
then the lamp at the back of the ovibert fired a bit later."
Ah, there's the rub. Remember, we said a length measurement is
*defined* as measuring the positions of the ends simultaneously. You
*need* that simultaneity in the measurement otherwise we *know* it will
be wrong.
But simultaneity is in the eye of the beholder. What one frame of
reference says will be simultaneous, another will say is not
simultaneous, and vice versa.
So if simultaneity is in the eye of the beholder, then length (which
*requires* simultaneity in its definition) is also in the eye of the
beholder.
Almost there, spaceman.
PD
.
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