Understanding the Momentum of Light in Space

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SUMMARY

The discussion centers on the momentum of photons emitted from a stationary object in space. It establishes that while photons possess no mass, they carry momentum, which results in the acceleration of the emitting object. The conversation references the implications of this phenomenon in relation to the center of mass and the Lorentz transformation. A link to a relevant physics news article on PhysOrg.com is also provided for further reading.

PREREQUISITES
  • Understanding of photon momentum and energy
  • Familiarity with the concept of center of mass
  • Knowledge of Lorentz transformation in physics
  • Basic principles of Einstein's theory of relativity
NEXT STEPS
  • Research the implications of photon momentum on object acceleration
  • Study the Lorentz transformation in detail
  • Explore the relationship between energy and mass as described by E=mc²
  • Read the linked article on PhysOrg.com for contemporary physics insights
USEFUL FOR

Physics students, researchers in theoretical physics, and anyone interested in the principles of momentum and relativity in space.

azabak
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A stationary object is floating on space and then it starts sending a continuous beam of photons. It seems correct to assert that the object accelerates since photons have momentum. In the initial condition the center of mass is at rest and thus it should remain at rest since photons have no mass. But it also accelerates because photons have momentum.
What happens in this situation?
 
Science news on Phys.org
azabak,

the photons have energy so they have momentum. Everything works out. I can't resist attaching a file which gives a simple proof of E=mc2 without using calculus or even having to solve a quadratic equation. I attach it because it uses an argument so close to the one you state.

Hope this helps

Regards

Sam
 

Attachments

Lorentz transformation is what I think your looking for.
 

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