Re: Simple Sagnac


"Sue..." <suzysewnshow@xxxxxxxxxxxx> wrote in message
news:1123343010.208868.318240@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
|
| Androcles wrote:
| > "sue jahn" <susysewnshow@xxxxxxxxxxxx> wrote in message
| > news:42f4bba3$0$18636$14726298@xxxxxxxxxxxxxxxxxx
| > |
| > | "Androcles" <Androcles@ MyPlace.org> wrote in message
| > news:MM2Je.10711$ia4.4202@xxxxxxxxxxxxxxxxxxxxxxxxxxxx
| > | >
| > | > Stand beside Sagnac in operation and your watch will slow down.
| > | > This is clearly absurd and there can be no connection between
time
| > and
| > | > the speed of light.
| > | >
| > |
| > | While you have clearly described an absurd connection, I think
| > | I will keep an open mind that some connection may exist in the
| > | relations:
| > |
| > | E = mc^2
| > | a = 1/2 mv^2
| >
| > It does. c is the velocity of emitted light relative to the
epicentre
| > of the H-bomb blast, where m once was. You can close your mind
| > if you have understood that.
| >
| > v is the velocity (and a the acceleration) for the dragster's motion
wrt
| > to the bleachers the public watch from. From the view of the
competing
| > car the acceleration is far smaller and makes a slight difference to
who
| > won.
| > The difference in distance between the losing car and the winning
car
| > is 1/2at^2.
| > You can close your mind if you have understood that.
|
| Close mind? Gnaw... but sometimes when you feel dizzy
| it is good to close your eyes so you don't have to make
| make excuses for seeing something like this:
|
http://teachers.web.cern.ch/teachers/archiv/HST2002/Bubblech/mbitu/electron-positron.htm
|
| when common sense tells you an empty wine bottle is the
| correct image. :o)
|
| Sue...
Did you have a point to make?
Maybe this is what's bothering you.

"Another proof, more closely related to the present discussion, may be
made by the following modification of a demonstration due to Langevin.
Consider a source which is at rest with respect to an observer O and
which radiates a simultaneous, oppositely directed pair of equal quanta,
hu, e.g., annihilation radiation. While the total energy radiated is ΔE
= 2hu, the total momentum radiated is zero, so the source remains at
rest with respect to O.

Now, consider this phenomenon from the point of view of an observer O'
who moves with respect to O with the constant velocity v = bc along the
line defined by the radiation. On account of the first-order Doppler
effect O' observes two quanta with the frequencies hu (1 + b) and hu
(1 - b). He thus concludes that a net amount of momentum hu(1+b)/c - hu
(1-b)/c = 2hub/c is emitted in the direction in which the source and O
appear to move with respect to him. From the conservation principle for
momentum he concludes that the source loses this same quantity of
momentum. Now the velocity of the source with respect to O' does not
change since it remains at rest with respect to O, as has been seen.
Thus O' is forced to conclude that the mass of the source has decreased
by an amount Dm, where (Dm)u = 2hub/c. Thus, Dm = DE/c2." J.G.Fox.

Androcles




| >
| > | http://physics.nist.gov/cuu/Images/alphaeq.gif <----ignored
unopened.
| > |
| > | There are no funny clocks in that tho' which I believe
| > | is the gist of your gyrations.
| >
| > | Sue...
| >
| > There are no funny clocks. <---- see the period?
| > Let's try this again.
| > Sue doesn't need to tell Androcles about funny clocks.
| > There are no funny clocks[period]
| > My gyrations are intended to show that there can be no
| > funny clocks. Funny clocks are proposed by others and
| > I'm having my fun shooting them down. Not from the hip.
| > I take careful aim. Both hands on the rifle, telescopic sights
| > aimed on the target. Don't walk in front of me when I pull
| > the trigger, or you'll be accidentally shot, and don't tell
| > me my aim is off you'll be deliberately shot.:-)
| Yikes! A threat. I'm tellin' Tony.
| ... On second tho't, I wouldn't wish your phast fotons on
| the physics community of even the roguest of states. :o)
|
| Sue...
|
| > Androcles
|

.

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