You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser.
-
They will.
Does your paper provide something that the first one does not? If so, you should cite the first paper in your introduction...
-
Assuming that by “em” you mean “electromagnetic”(although that’s the only kind of photon), then yes, the upper case letter ##E## is...