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Offline syhprum

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Gravity shield
« on: 10/02/2007 11:06:26 »
When there is a total eclipse of the Sun does the moon produce any measurable gravity shielding effect?
My first guess is that it would not as it has been suggested that 'Gravitons' have about 10^-11 times the interaction with matter that Neutrinos have and they would have no trouble zipping through the moon and also the thermal effects caused by photon shielding would confuse the issue but have any attempts ever been made to measure an effect ?. 


 

Offline Soul Surfer

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Gravity shield
« Reply #1 on: 10/02/2007 15:17:46 »
In very precise measurements bith in the lab and elsewhere no gravity shielding has ever been observed
 

Offline lightarrow

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Gravity shield
« Reply #2 on: 10/02/2007 17:50:24 »
When there is a total eclipse of the Sun does the moon produce any measurable gravity shielding effect?
My first guess is that it would not as it has been suggested that 'Gravitons' have about 10^-11 times the interaction with matter that Neutrinos have and they would have no trouble zipping through the moon and also the thermal effects caused by photon shielding would confuse the issue but have any attempts ever been made to measure an effect ?

People more aknoweldged with Physics than me suggest not to talk about gravitons, since they only exist in not well established theories, like string theory. A theory we know to work very well with gravitation is Einstein's GR. According to it, you don't have to worry about the fact there is a sun there producing gravitational effect here, because all there is it's a space-time curvature here already present because of the sun there (remember the warped elastic membrane analogy).
So, the moon would produce an additional curvature to the existing one of the sun (opposite of shielding effect!)
 

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Gravity shield
« Reply #2 on: 10/02/2007 17:50:24 »

 

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