hey(adsbygoogle = window.adsbygoogle || []).push({});

just wondering

how come photons cant get out of black holes , because the gravity equation is :

GMm / d²

But , a photon mass = 0 , so the gravity equation with a photon should be equal to 0, so it should be able to get out

Or, is it that when gravity becomes greater , the length of time becomes greater, or something like that

or that the photon will get out of the black hole , but in a very very very long time

and , i just need the general idea with a few equations if possible, im only in grade 11

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Black Holes and Photons

Loading...

**Physics Forums | Science Articles, Homework Help, Discussion**