Natural Science Forum / Physics / Relativity / July 2006

Date:  Tues, Jul 4 2006 1:07 pm
Email:   Phineas T Puddleduck <phineaspuddled...@googlemail.com_NOSPAM>
Groups:   sci.physics.relativity
<dwhig...@aol.com> wrote:

I guess
sometimes - people are evil - to create justice - God puts a curse on them and their family for 3 or 4 generations
boys and girls should not make lists of boys and girls they do not like
When David counted the people God became angry.  God put a curse on the

"The Lorentz Transformation for Velocity"
    It is recognized that Special Relativity provides the Lorentz
Transformations for Length and Time and Mass between reference frames having
a relative velocity. What is too often not recognized that, in so doing, it

Caltech News Release
For Immediate Release
July 10, 2006
Caltech and Princeton University Press Release Tenth Volume of the

You insist that that the mass of a photon is given by the equation,
m = h.f / c^2
In which case, let us examine the case of a photon with a wavelength of
555 * 10^-9 m.

"The Lorentz Transformation for Velocity"
    It is recognized that Special Relativity provides the Lorentz
Transformations for Length and Time and Mass between reference frames having
a relative velocity. What is too often not recognized that, in so doing, it

About this magic thing they call 'spacetime'.
They talk about movement in 'spacetime', in both SPACE and in TIME.
Can some bright SRian tell me how rates of movement through TIME are assessed
or compared in this magic spacetime?

This matter is not solved in this group.
It may be that it is solved, but I don't know the source.
One link I've found but can't recover, was optical with interference.
The various techs to measure c are, except of Römer,  TWLS.

Gravity Probe B
http://einstein.stanford.edu/
Excerpts:
"Gravity Probe B is the relativity gyroscope experiment being

 I'm reading some things where it is mentioned that there increasing
agreement -- albeit unspecified -- that space is not curved by the matter in
it. That gravity does not curve space, meaning also that gravity and any
curvature of space are not indistinguishably one and the ...

I have a few questions:
Why are typical communication systems (mobile, satellite) done in the
radio frequency range and not, for example, infrared, visible, UV or
x-ray? Couldn't you use visible light as a carrier and mdulate that?

http://www.whatistheword.com/story/SciTech_895.html
They say there is nothing to fear since the Asteroid (1/2 mile wide)
will be passing around NOON (Eastern time) at 1.1 the distance from
Earth to the Moon on July 3....

How to measure the size of Universe!
http://www.studyandjobs.com/universe_size.html
or
http://www.studyandjobs.com/basicscience_study.htm

This is an extremely simple variation of my cylinder problem theme. It
doesn't involve much physics other than Einstein's notion of
simultaneous events, and the measurement of length.  Can anyone
provide the simple solution.  If you can't or won't post a physics