Laser Gravity: Can a Laser Pull Gently?

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Discussion Overview

The discussion revolves around the concept of whether a powerful laser beam can exert a gravitational pull. Participants explore the relationship between mass, energy, and gravitational fields, as well as the implications of laser frequency and brightness on this phenomenon.

Discussion Character

  • Exploratory, Technical explanation, Conceptual clarification

Main Points Raised

  • Some participants propose that a powerful laser beam would have a gravitational tug due to its mass/energy content.
  • Others argue that while all mass/energy contributes to gravitational fields, the effect of a laser would likely be immeasurably small.
  • A participant expresses a desire to calculate the gravitational effect but indicates a lack of tools to do so.
  • It is suggested that higher frequency and brightness of the laser could increase its gravitational pull.
  • Some participants recommend researching pp wave spacetimes for further understanding.
  • Another suggestion is to look into the theories related to the term "kugelblitz".

Areas of Agreement / Disagreement

Participants generally agree that a laser beam can exert a gravitational pull due to its energy, but there is no consensus on the significance of this effect, with some emphasizing its likely insignificance.

Contextual Notes

The discussion includes assumptions about the relationship between energy and gravity, and the calculations required to quantify the gravitational effect of a laser beam are not resolved.

fishin_kitten
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Would the beam of a powerful laser have any gravitational tug?
 
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Sure. All mass/energy contributes to the generation of gravitational fields. However, it would likely be immeasurably tiny. Why don't you try calculating it?
 
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phyzguy said:
Sure. All mass/energy contributes to the generation of gravitational fields. However, it would likely be immeasurably tiny. Why don't you try calculating it?
God I wish I could! I don't have the tools.
Obviously higher frequency and brightness would up the pull. Your answer helped reinforce my thought thanx
 
You would need to read up on pp wave spacetimes for details.
 
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Dale said:
You would need to read up on pp wave spacetimes for details.
I'm on it thanx
 
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You also might research the theories behind the term, "kugelblitz".
 

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