| Topic: |
Science > Physics |
| User: |
"Etis" |
| Date: |
22 Feb 2006 08:32:34 AM |
| Object: |
"Will the LIGO Experiment Work?" |
"Will the LIGO Experiment Work?"
An ambitious experiment to detect gravitational waves from distant
astronomical sources is currently in preparation (Laser Interferometric
Gravitational Observatory - LIGO). A typical source for such waves would be
two stars circling each other in close proximity. It is proposed to detect
these waves by means of a two axis laser array to measure the relativistic
effects of the waves as they pass by. It is postulated that these waves will
cause the distance between the ends of the array, as sensed by Laser
inteferometry, to be moved by the "distortion of space" as they pass the
Earth. It is expected that this movement will be detectible by an
interference pattern observable in Laser signals sent between the ends of
the arrays. Calculations have shown that the gravitational wave produced by
a massive star in close orbit about another should contain enough energy to
be readily detectible by this method. What does not seem to be mentioned is
the fact that LIGO is only capable of detecting longitudinal waves. In
addition in none of these reports does mention seem to have been made of the
fact that such waves must always be generated as multiple waves which cancel
completely for longitudinal waves and cancel in the far field for transverse
waves. Considering the distances involved and the size of the LIGO array,
all such observations will be made as distant far field observations.
The generation of multiple waves (e.g.- two for a binary system)
results from the fact that, as is the case with a single gravitational
object, the center of gravity of a gravitationally coupled multiple object
must remain stationary as its component parts move with respect to each
other. As a result, the gravitational wave (as seen at an "infinite
distance") from one of the objects in a binary system will be equal in
amplitude and opposite in phase to the gravitational wave from the other.
The net gravitational radiation from the pair will consist of both
longitudinal and transverse waves which are equal in amplitude. The
longitudinal waves will be opposite in phase and should therefore cancel
completely. The transverse waves will have a very small phase angle between
them equal to the radius of the orbit(so) involved divided by the
distance to the source.
The transverse waves are only observable if the two objects can be
resolved as separate objects (near field radiation). If they cannot be so
resolved (far field radiation) by the gravitational wave detector, they will
be impossible to detect because the detector will experience only the static
field from their common center of gravity. The cyclical field which for
which detection was hoped for will cancel. A further complication in the
detection of the transverse wave is the fact that they will not produce a
'stretching" of the local horizontal, they will produce a "tilting" of the
local vertical. The LIGO array should not capable of detecting the effect
even if it has sufficinet amplitude.
The longitudinal waves emanating from the center of gravity of the
emitting system always produce far field radiation which cancels completely.
An additional complication results from the fact that any residual component
of the gravitational radiation is attenuated not only by the expected
inverse square law, it suffers an additional attenuation in proportion to
the cube of distance rather than the square of distance do the transverse
waves. It would seem reasonable to assert that there are no longitudinal
waves for LIGO to detect.
Gravitational waves certainly do exist, we live on a world with an
enormous gravity wave detector, the oceans. The tides in the ocean are
produced by the Moon's gravitational field. The time of high tide advances
about an hour a day. This advancement can be considered to be the output of
a gravity wave detector, but, that gravity wave would be undetectable at
interplanetary distances because the gravitational waves from the Earth and
the Moon would cancel each other virtually completely! The writer has
received arguments that the fact that binary stellar systems are observed to
lose energy over time due to radiation of gravitational energy to the
Universe shows that the limitation described does not occur and that
gravitational waves will therefore be detectible. Such an argument is
faulty. The radiating objects are embedded in the Universe and, as a result,
all of the radiated gravitational energy is absorbed as "near field"
radiation. It is only the shrimpy detectors that man is capable of building
which will have difficulty in detecting transverse gravitational waves. (In
addition to the expected attenuation in wave strength imposed by the inverse
square law, the energy received by the far field detector
represented by the LIGO array will be reduced in proportional to the square
of the ratio of the orbital radius of the sources divided by the distance to
the sourced. Rotsa Ruck Fellows!
The source material for this posting may be found in
http://einsteinhoax.com/hoax.htm/ (1997);
http://einsteinhoax.com/gravity.htm (1987); and
http://einsteinhoax.com/relcor.htm (1997). EVERYTHING WHICH WE ACCEPT AS
TRUE MUST BE CONSISTENT WITH EVERYTHING ELSE WE HAVE ACCEPTED AS TRUE, IT
MUST BE CONSISTENT WITH ALL OBSERVATIONS, AND IT MUST BE MATHEMATICALLY
VIABLE. PRESENT TEACHINGS DO NOT ALWAYS MEET THIS REQUIREMENT. THE WORLD IS
ENTITLED TO A HIGHER STANDARD OF WORKMANSHIP FROM THOSE IT HAS GRANTED WORLD
CLASS STATUS.
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http://einsteinhoax.com/postinglog.htm.
Please make any response via E-mail as Newsgroups are not monitored on
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as they are presented. To prevent the wastage of time on both of our parts,
please do not raise objections that are not related to material that you
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The material at the Website has been posted continuously for over 8
years. In that time THERE HAVE BEEN NO OBJECTIVE REBUTTALS OF ANY OF THE
MATERIAL PRESENTED. There have only been hand waving arguments by
individuals who have mindlessly accepted the prevailing wisdom without
questioning it. If anyone provides a significant rebuttal that cannot be
objectively answered, the material at the Website will be withdrawn.
Challenges to date have revealed only the responder's inadequacy with one
exception for which a correction was provided.
.
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| User: "Igor" |
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| Title: Re: "Will the LIGO Experiment Work?" |
22 Feb 2006 02:52:10 PM |
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There have only been hand waving arguments by this poster who has
mindlessly accepted the his own so-called wisdom without questioning
it. If anyone provides a significant rebuttal that cannot be
objectively answered, the poster mostly ignores it..
Challenges to date have revealed only the poster's inadequacy with
reality.
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