Physicists study properties of matter and energy. They research the structure of matter and laws of nature and use that knowledge to create new materials and products. Do the names Einstein or Hawking ring a bell? Physicists use principles of math, physics, and chemistry in their research. Employers of physicists include scientific firms, federal and state government agencies, and universities. Most positions require a doctorate in physics, but a master’s degree will qualify you for jobs in manufacturing and teaching.