Tools of the nuclear physicist include accelerators and nuclear reactors. Physics education - Teachers experience the excitement and fulfillment of educating others about all the fields of physics. Plasma physicists are pursuing the possibility of controlled thermonuclear energy on earth. They also contribute to astrophysics. The interests of rheologists include the flow of blood in the body, the flow of materials in a food-processing plant, and the flow of Arctic glaciers.
Integrated circuits are the product of solid state physics.
Vacuum physics - the study and applications of vacuums, volumes nearly free of matter. Vacuums are important in many manufacturing processes and in experimental devices such as accelerators.