Physicists - Main Physicists Physicists conduct research on the characteristics of matter and energy in the universe. Physicists explore and identify basic principles governing the structure and behavior of matter and the generation and transfer of energy. They also explore and identify the interaction of matter and energy.
Some physicists use their principles in theoretical areas, such as the origin of the universe.
Others use their principles in practical areas, such as the development of electronic and optical devices and medical equipment. Physicists design and perform experiments with cyclotrons, mass spectrometers, lasers, and other equipment. Based on observation and analysis, they attempt to discover the laws that describe the forces of nature. These include electromagnetism, nuclear interactions, and gravity. They also find ways to apply physical theories and laws to problems in many areas.