Let's check for gravitational screening, simple...

> [dh]: How can such a little entity carry such enormous energy?

The "energy" (actually momentum, as AB says) arises from the graviton's extremely high speed, not from its mass (which is tiny) or any form of internal energy. The strength of the gravitational constant then comes from the high speed of gravitons and thier high number density. -|Tom|-

This forum seems to have two topics; SolidStatePhysics and gravity. Both these topics are very interesting but combined like this is a bit much. SSP must have a million subtopics which are billion dollar issues and poor gravity has zero money value but is what keeps the universe going. I don't see any connection and wish this forum would divide into two so I could figure it out.

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One last time (unless Don or someone can help out again): Why would any oscillation make gravitational shielding stronger (let alone 10^13 times stronger)? Each part of the crystal is standing dead still as each graviton passes through its entire body in less than 10^-19 seconds. So why should a relatively slow oscillation make any difference?

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Let me take a shot at this ...

It's not making the shielding stronger, it's making the detection stronger. Any shielding effect should be more pronounced along the planes of atoms in the crystal and less pronounced (zero) between the planes. So the graviton flux entering one end of the crystal will be uniform but leaving the other end it will be layered (with the same spacing as the crystal lattice).

If the crystal is moved back and forth perpendicular to the layers of atoms the layered graviton flux leaving it will also move back and forth.

Another crystal placed in this moving flux of layered gravitons will experience time varying forces, and begin vibrating.

If this second crystal resonates at the frequency of these force variations it will magnify the vibrations. This seems to be a variation on the Walker-Dual experiment.

Given the likely weakness of the shielding effect (from Lageos), it might take some pretty long crystals to reach the threshold of detectability.

Regards,
LB

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This seems to be a variation on the Walker-Dual experiment.
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Could you please direct me to some details on that experiment? I seem to find nothing online.

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Given the likely weakness of the shielding effect (from Lageos), it might take some pretty long crystals to reach the threshold of detectability.
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The matter of fact is that some inexplicable coupling between two identical x-talls exists. I've seen it between two very old 150 kHz quatz x-talls measured about 20mm x7mm x0.7mm. When the "transmitter" x-tall was replaced by a piezoceramic equivalent (amplitude roughly the same as controlled by reflected laser beam), the coupling was much weaker ,just as expected from parasitic acoustical coupling. I did all that in 1986...

BTW, thanks for your simple and concise interpretation of my model.

>> [lb]: If this second crystal resonates at the frequency of these force variations it will magnify the vibrations. This seems to be a variation on the Walker-Dual experiment.

Thanks, Larry. That explanation I can understand. Can the matter density in the planes of the atoms really be 10^13 times greater than in other directions?

> [ab]: Could you please direct me to some details on that experiment?

For the design, see < www.ifm.mavt.ethz.ch/research/exp-3.html >

For the technical details, see W.D. Walker and J.Dual, "Superluminal propagation speed of longitudinally oscillating electrical fields", abstract #72 in: "Causality and Locality in Modern Physics and Astronomy: Open Questions and Possible Solutions", ed. S. Jeffers, York University, North York, 1997. A web version of the paper is available at < xxx.lanl.gov/abs/gr-qc/9706082 >

>> [lb]: Given the likely weakness of the shielding effect (from Lageos), it might take some pretty long crystals to reach the threshold of detectability.

> [ab]: The matter of fact is that some inexplicable coupling between two identical x-talls exists. I've seen it between two very old 150 kHz quatz x-talls...

If one could in fact modulate gravitons at a high frequency, I would expect the first detectable effect to be electromagnetic radiation at that frequency from stimulation of the elysium ("light-carrying medium"). But I guess that's how a radio works.

One way to determine if this is a gravitational shielding effect would be to crank the crystal frequency up to hundreds of Mhz or so. For example, at 1 Ghz, at crystal 6 inches away would have induced oscillations 180 degrees out of phase, producing maximum interference between the vibrations of the two crystals, if the inducing mechanism were anything but gravity and therefore limited to the speed of light. But a true graviton effect would have zero delay and no interference, and would also be the first experimental demonstration of sending a signal containing information faster than light. -|Tom|-

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Can the matter density in the planes of the atoms really be 10^13 times greater than in other directions?
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That 10^13 is the Q-factor of the main acoustical resonance in a quatz x-tall about a few inches in diameter. The Q-factor for the smaller x-talls like those used in electronic equipment ranges from 10^7 - 10^8 for the smaller and cheaper ones and up to 10^10 - 10^11 for the bigger and better ones. It has something to do with relative density of planes inside the crystall, but it definitely is not so directly related. It has more to do with the force of bonds within the crystall and the configuration of electrons of the constituent atoms.

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One way to determine if this is a gravitational shielding effect would be to crank the crystal frequency up to hundreds of Mhz or so. For example, at 1 Ghz, at crystal 6 inches away would have induced oscillations 180 degrees out of phase, producing maximum interference between the vibrations of the two crystals, if the inducing mechanism were anything but gravity and therefore limited to the speed of light. But a true graviton effect would have zero delay and no interference, and would also be the first experimental demonstration of sending a signal containing information faster than light.
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It's better to try all the available frequencies and all the possible spatial configurations. Proving the ftl speed would be somewhat problematic since high Q-factor would take long time to average out the effect, though phase modulation may actually help here...