Re: So... Lerentz Contractions are *physical* not observered?

kenseto wrote:

"Jem" <xxx@xxxxxxx> wrote in message
news:6oNii.8415$Zt6.7938@xxxxxxxxxxxxxxx

kenseto wrote:


"jem" <xxx@xxxxxxx> wrote in message
news:iEMii.8412$Zt6.3916@xxxxxxxxxxxxxxx


kenseto wrote:


"jem" <xxx@xxxxxxx> wrote in message

news:O2sii.3834$Zt6.53@xxxxxxxxxxxxxxx


kenseto wrote:




"Tom Roberts" <tjroberts137@xxxxxxxxxxxxx> wrote in message
news:1Sjii.16683$2v1.8259@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx




mgconsolidated@xxxxxxxxxxxxxx wrote:




Can anyone provide / point to a definitive answer on whether

Lorentz

contractions are physical or an observered effect.

This depends on what you mean by those words.

Here's an analogy: a ladder will fit through a doorway if it is

oriented


correctly, and won't fit if it is oriented differently -- is this
difference "physical"? -- after all neither the length of the ladder

nor


the width of the doorway change in any way. This is an example of
GEOMETRICAL PROJECTION -- if the projection of the ladder's length

onto


the doorway's width is small then it fits, and if that projection is
large then it won't; this depends on their relative orientation.


Instead of the ladder we have a circular metal plate with a diameter

of

Dp



and the door in the barn is also circular with a diameter of Db. Dp

is

lager



than Db. Now Dp is accelerated to a relativistic speed will it fit

through



the smaller Db door???

Does IRT have an answer, Seto?


Yes IRT has an answer as follows:
Dp will not fit through the smaller Db door.
Why?
In IRT the physical length of an object remains the same in all frames

of


reference.... even as viewed by different observers. In IRT the light

path


length of an object is different in different frames. The higher is the
state of absolute motion of an object the longer is it's light path

length.


An IRT observer does not know if the rod moving wrt him is in a higher

or


lower state of absolute motion. That's why IRT has two sets of

equations

for


the light path length of a moving rod. When the moving rod is in a

higher


state of absolute motion than the IRT observer then its light path

length is


longer than the light path length of the IRT observer's rod by a factor

of


(gamma). When the moving rod is in a lower state of absolute motion

than

the


IRT observer then its light path length is shorter than the light path
length of the IRT observer's rod by a factor of (1/gamma).....BTW this

is


the formula for the SR length contraction.

Same for SR, Seto. Except for the "Why?" part, of course. :)


No its not the same for SR. SR says that a rod is able to fit through

the

door way because of rotation of the rod. With my example how is SR able

to

explain that the circular plate is able to fit through the door way

Duh! Didn't I just tell you that SR says it /isn't/ able to fit
through? Are you working on your Space Cadet certification, or what?


Duh....didn't Roberts and you say that you can rotate a rod to fit through
the door way? Now you are saying that a circular plate can't rotate and fit
through the door way. Does that mean that the SR concept of rotation
(geometric projection) is a bunch of bull ***? BTW the SR mutal time
dilation and mutual length contraction are derived from the same SR bull
*** of geometric projection.

Get a 4 year-old to explain to you why a jar's contents can be extracted with a spoon, but not with the jar's removable top.
.