A physicist is the type of scientist who studies physical phenomena. This field encompasses a broad range of topics, including the fundamental forces of nature, the behaviors of matter and energy, and the principles that govern the physical universe. Physicists may specialize in various subfields, including classical mechanics, electromagnetism, thermodynamics, and quantum physics. They conduct experiments, develop theories, and utilize mathematical models to understand the principles behind how things work, and their findings can have practical applications in technology, engineering, and other sciences. In essence, physicists aim to understand the laws that govern the natural world.