Thank you very much, Choppy; I'll look into some of these.
I do have a question for you: my research shows that to become a medical physicist one needs two years of study in a medical physics program and two years of field study. But, is it possible to enter the field directly with a PhD?
I have looked into that; from my research, it just seems like it is a position of a glorified technician, and I've read that it is somewhat unsatisfying for those who enjoy critical thinking and learning.
Perhaps there is a counterargument?
I am a physics/mathematics major and I am hoping to attend graduate school to earn a PhD. However, I'm not sure what field to choose as I am very interested in a variety of things such as physics, math, philosophy, theology, chemistry, and even psychology. I am sure that I would love a field...