Through systematic observation and experimentation, physicists describe in mathematical terms the structure of the universe and the interaction of matter and energy.
Physicists develop theories that describe the fundamental forces and laws of nature.
Determining the basic laws governing phenomena such as gravity, electromagnetism, and clear interactions leads to discoveries and innovations. Frequently, these endeavors directly or indirectly result in new technologies which have a profound effect on everyday life. Most physicists work in research and development. Some conduct basic research to increase scientific knowledge. Often that which physicist design for their research can be applied to other areas.