Does gravity turn time into space?

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SUMMARY

The discussion centers on the concept that gravity influences the relationship between time and space, particularly for free-falling objects. Inspired by the applet and the book "Relativity Visualized," the presenter aims to demonstrate how the curvature of spacetime causes an object's travel through time to convert into travel through space. Observers perceive this effect as a slowing of the object's clock due to gravitational influence. The consensus is that the qualitative explanation provided is accurate for a lay audience, emphasizing the transformation of time into space under gravity.

PREREQUISITES
  • Understanding of general relativity concepts
  • Familiarity with spacetime curvature
  • Basic knowledge of free-fall dynamics
  • Experience with visual aids for scientific presentations
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  • Explore the mathematical foundations of general relativity
  • Investigate the effects of gravitational time dilation
  • Learn about spacetime diagrams and their applications
  • Review educational resources on visualizing complex physics concepts
USEFUL FOR

This discussion is beneficial for educators, physics enthusiasts, and anyone interested in conveying complex concepts of general relativity to a general audience.

Karl Coryat
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I am preparing a simple demonstration of gravity for a lay audience, inspired by this applet and the well-known book Relativity Visualized. These resources suggest that for a free-falling object, the curvature of spacetime "converts" some of the object's travel through time into travel through space. That seems to be the case: As the object accelerates due to gravity, we fixed observers see its clock slow down (neglecting GR time dilation caused by the object approaching the gravitational mass).

In my presentation, to explain why a released object goes from "stationary" to falling, I'd like to say something to that effect (with graphics similar to the above applet): that when spacetime is curved, a free-falling object's ordinary travel through time spontaneously begins to transform into travel through space as well.

Is the statement reasonably accurate? Mind you, I am merely trying to create a qualitative "aha!" moment, not a rigorous explanation. Thank you.
 
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Karl Coryat said:
Is the statement reasonably accurate? Mind you, I am merely trying to create a qualitative "aha!" moment, not a rigorous explanation. Thank you.

For the stated purposes I would say your explanation is perfectly fine. The rigorous explanation simply takes what you said and puts it on mathematical grounds anyways.
 
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