Relativity Insights: FAQs on Photons, Gravity, Time Dilation, and More!

[Greg Bernhardt]

* FAQ entries are slowly being migrated to the Insights blog
https://www.physicsforums.com/insights/category/faqs/

• Do photons have mass?
• Will All Matter Be Converted to Photons?
• Does gravity gravitate?
• A Geometrical View of Time Dilation and the Twin Paradox
• Can I send a signal faster than light by pushing a rigid rod?
• Why is the speed of light the same in all frames of reference?
• Rest frame of a photon
• Speed of gravity: How fast do changes in the gravitational field propagate?
• How can light have momentum if it has zero mass?
• Why are massless photons affected by gravity?
• Why does c have a particular value, and can it change?
• What is the Bell spaceship paradox, and how is it resolved?
• What is time dilation
• What is the PF's policy on Lorentz Ether Theory and Block Universe?
• What is the Lorentz transformation
• What is the Mass–energy equivalence
• What is a Metric Tensor
• What are the Einstein field equations
• What is geodesic deviation
• What is relativistic mass and why it is not used much?
• What is the experimental basis of Special Relativity?

Feel free to request future FAQs

 

[BvU]

Time to update this page. Too many of the links end up at the black hole -- but the threads/insights are still sitting elsewhere on PF.

 

[DrGreg]

There must be lots of old posts which link to FAQ pages that no longer exist. Is it technically possible to redirect these to the correct new location? Or, if not, can at least the old FAQ pages still exist each displaying a link to the new page?

 

[Greg Bernhardt]

Is it technically possible to redirect these to the correct new location?

Yep!

 

[Greg Bernhardt]

The relativity FAQ list is back, updated and will be updated as more relativity Insights are posted.