Just like the previous question,
Even I have been studying Hawking's A Brief History Of Time and even I was thinking of Einstein's General Relativity. But I was unable to accept his view of GRAVITY. I have been working on a theory which needs that Gravity effects Light. And so my question is that, Is there any kind of mass for Light? as it was being effected by Gravity?
Excuse me if any mistakes were done.
Plzz answer me.
$\begingroup$
$\endgroup$
5
-
$\begingroup$ E=m*c^2. So... yes. $\endgroup$– John DvorakCommented Dec 19, 2014 at 18:46
-
$\begingroup$ Einstein's GR shows that light is affected by gravity and that light itself curves space as well $\endgroup$– JimCommented Dec 19, 2014 at 18:46
-
1$\begingroup$ Light has no rest mass but it has a gravitational mass $\endgroup$– JimCommented Dec 19, 2014 at 18:48
-
$\begingroup$ @JanDvorak: You may want to read this article $\endgroup$– Kyle KanosCommented Dec 19, 2014 at 18:49
-
$\begingroup$ @Hemanth: see also How can gravity affect light and links therein $\endgroup$– Kyle KanosCommented Dec 19, 2014 at 18:50
Add a comment
|
1 Answer
$\begingroup$
$\endgroup$
No ,a photon has no mass but it (still)can have momentum according to the equation E^2=(pc)^2+(mc^2)^2 and yes,light can be effected by gravity because of its energy(due to momentum ) simply you can say its not nessesary to have mass for a photon to be effected by gravity.