What does a physicist do?

Answer 1

Physicists study the natural world, from the tiniest subatomic particles to the largest galaxies. They do experiments to discover the laws of nature. They study what things are made of (matter) and how things behave. They also study energy. They learn how it changes from one form to another. Some physicists focus on theories. They ask big questions. They might ask what causes gravity, for example, or what the shape and size of the universe is. Then, they use observation and mathematics to find the answers. Many physicists do experiments. Some, for example, ram atoms into each other in an accelerator to break them apart. They look for clues about what particles come out of atoms when they split. Other physicists apply theories to practical problems. They might create advanced materials, new electronic and optical devices, or medical equipment. Physicists also design research equipment. Some of this equipment is used in surprising ways. For example, the first laser was created for research, but people later discovered that lasers could be used in surgery as well. Most physicists work in research and development. Some do basic research to increase knowledge. Others do applied research. They take what is learned in basic research and use it to create new devices, products, and processes.