Jump to content
EWyatt

Photons, what are they really?

Recommended Posts

Visible light, I presume, is a photon product. And since photons have no mass or charge, how are they affected by gravity? Black holes don't allow photons to escape, and light is "curved" when passing a large body toward Earth from a distant star, etc. So how can a mass-less unit be affected by gravitational pull?

Share this post


Link to post
Share on other sites

Visible light, I presume, is a photon product. And since photons have no mass or charge, how are they affected by gravity? Black holes don't allow photons to escape, and light is "curved" when passing a large body toward Earth from a distant star, etc. So how can a mass-less unit be affected by gravitational pull?

 

Light still has relative mass, and energy distorts the fabric of space as well. A photon has energy, energy is effected by curvature, and energy is a part of determining the photon's frequency and magnitude.

Edited by EquisDeXD

Share this post


Link to post
Share on other sites

Visible light, I presume, is a photon product. And since photons have no mass or charge, how are they affected by gravity? Black holes don't allow photons to escape, and light is "curved" when passing a large body toward Earth from a distant star, etc. So how can a mass-less unit be affected by gravitational pull?

 

Light will always follow the shortest route between points. This is known as the geodesic. Gravity curves the geodesic. Photons always follow the curve of space.

Share this post


Link to post
Share on other sites

What happens to a photon after we see something?

It's gone. The photon gets absorbed by a molecule in your eye.

Share this post


Link to post
Share on other sites

Visible light, I presume, is a photon product. And since photons have no mass or charge, how are they affected by gravity? Black holes don't allow photons to escape, and light is "curved" when passing a large body toward Earth from a distant star, etc. So how can a mass-less unit be affected by gravitational pull?

The classical explanation of General Relativity is that photons follow the curved lines inward surrounding matter. You also could say that photons, via their momentum/ energy, have a small mass equivalence and thereby react like matter concerning gravity.

//

Edited by pantheory

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.