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Question

Is gravity due to space time curvature or gravitational waves?


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Solution


Origin of Gravity:

  1. Gravity is a phenomenon originating from the curvature of space-time in Einstein's general theory of relativity. This curvature is caused by the existence of mass.
  2. The existence of mass causes this curvature. The larger the mass contained within a particular volume of space, the greater the curvature of space-time at the volume's boundary.
  3. General relativity says, gravity is nothing but a geometry of space time.
  4. Mass and energy distributions cause the bending of spacetime distributions, which we see as gravity.
  5. It successfully can explain why there is gravity and almost everything related to that. But the source of spacetime, and why it is affected by mass, it's still unknown.
  6. The curvature of space-time changes as things with mass moves around in it, reflecting the changes in their locations.
  7. Accelerating objects cause changes in this curvature, which propagate outwards at the speed of light in a wave-like way in certain circumstances.
  8. When a gravitational wave travels through an observer, the observer will notice that space-time has been deformed due to strain.
  9. The mass of each object and the distance between their centers determine the force of gravity between two objects.
  10. The greater the amount of mass in the object, the greater will be the degree of gravitational pull but the gravitational force between them lessens as the distance between two objects increases.

Hence, gravity is due to space-time curvature.


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