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

kenseto wrote:
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kenseto wrote:


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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.


So are you saying that the SR concept of geometric projection is valid

only

for skinny rods and not for objects that are 3 dimensional?? Don't you

see

how stupid such assertion is?

What's the matter, Seto, couldn't you find a 4 year-old? There is
*no* way to rotate a circular disk so that it ridgidly fits through a
circular hole when the diameter of the hole is less than the diameter
of the disk (i.e. *every* geometric projection of the disk overlaps
the hole).
In the context of Relativity, there's no orientation at which your
metal plate can approach the circular doorway without at least one of
the disks diameters being perpendicular to the direction of travel,
and there's no length contraction perpendicular to the direction of
travel. Get it?


Hey idiot that's the point. The concept of geometric projection is bogus
because it only work for skinny rods and not for all objects.

No, it works for more than just skinny rods. As long as the hole in the doorway is not skinny, or the motion is in the vertical direction, with the light path length of the moving rod the same as the volume of the metal plate so that the geometric projection of the rod equals the geometric projection of the doorway, which is why it's not bogus.

Therefore we
need to find a different concept to explain the apparent length contraction.
The new concept is that the physical length of a moving rod remains the same
physical length no matter who is look at it. However different observer will
see different light path length for the same moving rod. This new
interpretation is universal and have no problem with any object.
IRT includes such interpretation and IRT is complete and it includes SRT and
LET as subset. Also IRT in valid in all environments including gravity:
http//www.geocities.com/kn_seto/2007IRT.pdf


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