[General] Why are gravity fields not shielded?

[Wolfgang Baer]

I've been wondering if our concept of gravitational fields propogating 
through everything is correct.

It seems that field lines start at sources and end at sinks. It also 
seems that our actual experimental measurements  are point to point 
interactions between  particle masses. But fields are thought to be 
properties of space. Could this be just a convenient mathematical trick?

For example during a lunar eclipse: : if the sun pulls on the moon 
directly and the earth pulls on the moon directly then we could add the 
two effects and call it a field effect that does not exhibit a 
shielding. This is how we calculate  the field   PE/m = - G*Ms/Rsm - 
G*Me/Rem. Nothing wrong here

But if we assume gravity propagates, perhaps with particles like 
gravitons, then they would have to penetrate the earth before they got 
to the moon. Since these gravitons clearly (maybe not so clearly)  do 
have an interaction with the mass of the earth it is puzzling that they 
go through , pull on the earth, but are not effected ie. shielding the 
moon from the Sun's mass

Historically Maxwell had great success with his equations and the charge 
to charge interaction due to EM propagation yields shielding and 
retarded force effects - However in his time he left gravity alone. Have 
we later simply applied his EM field ideas to gravity because it was 
such an elegant formulation?

So now I have to add the question of why no gravitational shielding to 
the question of why no retarded force calculation applies to gravity?

Wolf

-- 
Dr. Wolfgang Baer
Research Director
Nascent Systems Inc.
tel/fax 831-659-3120/0432
E-mail wolf at NascentInc.com

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