What should be our custom messages seen by (potential) new users?

Question

There are different places, where we can provide custom messages to new users. The following texts are first suggestions and suggestions how to improve them are highly welcome:

Notice at top for first time visitors

This is a question and answer site about advanced Physics, from graduate-level and beyond, including astronomy and for physicists relevant mathematics.

Custom message on register form

Please register, if you want to contribute to this Q&A site about advanced Physics, from graduate-level and beyond, including astronomy and for physicists relevant mathematics.

Notice on top for new registered users

Welcome to this Q&A site for graduate level upward questions in any area of physic and for physicists relevant mathematics.

Answer 1

"for physicists relevant mathematics" can be changed to "mathematics relevant for physicists".     

Answer 2

I think the  messages are unneccessarily very long winded, and could be shortened to just one on the custom register form:

Please note that only questions at graduate level and above may be asked here. For more basic questions, we suggest trying http://physics.stackexchange.com/