Compressed space.

[beilzabob]

Does a mass in space actually compress space causing it to try and get back to its central point in turn causing the force of gravity.Einstein said it could be warped but it seems it would be compressed at the same time.The bigger the planet ,the bigger gravity force due to the larger amount of compressed space?

 

[pluto_vic]

What is gravity if there isn't another body for it to act upon? Maybe this compression is gravity rather than existing concurrently with gravity?

 

[contracommando]

<blockquote><font class="small">In reply to:</font><hr /><p> “Does a mass in space actually compress space causing it to try and get back to its central point in turn causing the force of gravity” <p><hr /></p></p></blockquote><br /><br />In some ways space can act like a rubber band. For example, if I were to remove to sun from the solar system (wink it out of existence) then space would rebound upwards (as if it had been compressed downwards), resulting in a gravitational wave traveling outwards at the speed of light. Approximately 8 minutes later, the ensuing wave would knock the Earth out of its orbit into space. <br /><br />

 

[nexium]

Actually compress space? Probably not. It is likely an analogy somewhat like the rubber sheet, the bread dough with rasins. We may never know as gravity has avoided our attemps to get details about the nature of gravity. Neil

 

[beilzabob]

That sounds 2 dimensional to me.

 

[beilzabob]

That reminds me of "If a tree falls in the forest and there 's nobody around to hear it, does it make a sound?

 

[yevaud]

Bob:<br /><br />By the strictures of the Quantum Theory, it not only doesn't make a sound, there's some question as to whether or not the forest exists. <div class="Discussion_UserSignature"> <p><em>Differential Diagnosis:  </em>"<strong><em>I am both amused and annoyed that you think I should be less stubborn than you are</em></strong>."<br /> </p> </div>

 

[jatslo]

<font face="verdana">Thinking of gravity as high-pressure and low-pressure will undoubtedly lead to compression speculations, which could be what is happening in this regard. Gravity and the vacuum of space have many similarities indeed. Gravity may very well have compression characteristics, in my opinion.</font>

 

[beilzabob]

how do you measure gravity per second if it is relative?<br />

 

[beilzabob]

philosophy.

 

[kmarinas86]

semantics.

 

[mental_avenger]

<font color="yellow"> In some ways space can act like a rubber band. For example, if I were to remove to sun from the solar system (wink it out of existence) then space would rebound upwards (as if it had been compressed downwards), </font><br /><br />That is, of course, one theory, and not a particularly credible one at that. People are continually trying to formulate explanations that portray things as much more complex than they really are because they don’t understand them. People have a lot of trouble with gravity because it is a force acting at a distance, and that just doesn’t seem realistic. So they come up with “gravity waves”, which don’t help the explanation at all. They use 2D models like the “rubber sheet” which cannot offer an accurate depiction due to the inherent limitations.<br /><br />What would happen if we simply accepted that gravity is a force that can act at a distance. No explanation of the mechanism involved, just the simple fact that it does. Then develop technology that utilizes that force without ever understanding it. Of course, it is possible that if we understood the mechanism, we might be able to develop some amazing new technologies. However, I doubt that the “rubber band”, “rubber sheet” or “gravity wave” hypotheses are going to help in that regard.<br /> <div class="Discussion_UserSignature"> <p style="margin-top:0in;margin-left:0in;margin-right:0in" class="MsoNormal"><font face="Times New Roman" size="2" color="#ff0000"><strong>Our Solar System must be passing through a Non Sequitur area of space.</strong></font></p> </div>

 

[mental_avenger]

If a tree falls in a forest, and there is no one around to here it, there is no sound. Vibrations, whether traveling through the air or through a liquid or a solid, are not sound until those vibrations are received by an ear and interpreted by a brain. <div class="Discussion_UserSignature"> <p style="margin-top:0in;margin-left:0in;margin-right:0in" class="MsoNormal"><font face="Times New Roman" size="2" color="#ff0000"><strong>Our Solar System must be passing through a Non Sequitur area of space.</strong></font></p> </div>

 

[contracommando]

The rubber band concept is used to help people gain a better understanding of the underlying principles involved by employing everyday objects and concepts, an analogy. Einstein often used such things in his thought experiments- marbles, for example. <br /><br /><i>”A massive body like the sun causes the fabric of space to warp, somewhat like the effect of a bowling ball placed on a rubber sheet.” David Green, The elegant Universe-paperback, page 69. Figure3.4”</i><br /><br />Yes, Greene notes on page 71 that this analogy is not entirely correct and has its shortcomings. But it’s not the deficiencies that we should be so concerned with as it is the simple picture that the analogy can give us, one that is not too complex to understand. <br /><br /><i>“…although the rubber membrane-bowling ball model provides a good visual analogy of how an object such as the sun warps the space around it and thereby influences the motion of other bodies, the physical mechanism by which these distortions occur is totally different.” </i><br /><br />After having a basic picture of space in mind, we can proceed to refine our understanding by layering more advanced theories and explanations onto the original; like when an artist begins to paint a very detailed portrait of something (at least the way I do it). First, you sketch an outline of what goes where. You then use this model as a framework for constructing a more complex and complete picture.

 

[mental_avenger]

That is all well and good IF space is really warped as hypothesized. If it is not, then the model is not just inaccurate, but extremely misleading. The “flat sheet” model also leads to such incredibly absurd analogies such as folding the flat sheet to make distant areas adjacent. I understand man’s burning desire to find a way to cross the vastness of space within a reasonable portion of a person’s lifetime, but creating misleading analogies isn’t going to help. IMO, it may actually divert people from finding valid solutions. <div class="Discussion_UserSignature"> <p style="margin-top:0in;margin-left:0in;margin-right:0in" class="MsoNormal"><font face="Times New Roman" size="2" color="#ff0000"><strong>Our Solar System must be passing through a Non Sequitur area of space.</strong></font></p> </div>

 

[jatslo]

<font color="yellow">That is all well and good IF space is really warped as hypothesized. If it is not, then the model is not just inaccurate, but extremely misleading. The “flat sheet” model also leads to such incredibly absurd analogies such as folding the flat sheet to make distant areas adjacent. I understand man’s burning desire to find a way to cross the vastness of space within a reasonable portion of a person’s lifetime, but creating misleading analogies isn’t going to help. IMO, it may actually divert people from finding valid solutions.</font><br /><br /><font face="verdana">Warped Space-time is more than just a hypothecation; there is real scientific evidence in support of gravity affects on space-time; however, I see where you are coming from, but light does follow curvature.<br /><br />I think that there is more to light than meets the eye, and that is why I am opposed to curvature <b>of</b> space-time, and I am an advocate for curvature <b>in</b> space-time. The answer is resloved when light is fully resolved, I think.</font><br /><br />

 

[siarad]

Maybe mass is more like iron cores increasing the power of electro magnets & simply multiplies the effects of space without altering it.