CQW is an educational resource for theoretical physics and astrophysics, field theory, relativity and cosmology. we post a new question every wednesday for students to get and for teachers to stay in shape.
Thursday, April 26, 2012
fine structure constant
what would be different in cosmology if the fine structure constant would not be 1/137 but 1/138?
bonus points: why do we know that it has has stayed constant in the course of cosmic history?