Final answer:
Physics involves the creation or manipulation of matter at the smallest possible scale. At the microscopic scale, physicists study objects smaller than can be seen with a microscope, such as atoms and subatomic particles. Through theories like quantum mechanics and relativity, physicists explain these phenomena.
Step-by-step explanation:
Physics involves the creation or manipulation of matter at the smallest possible scale. It is concerned with describing the interactions of energy, matter, space, and time. At the microscopic scale, physicists study objects smaller than can be seen with a microscope, such as atoms and subatomic particles. Through experimental confirmation and research, physicists have developed theories like quantum mechanics and relativity to explain these phenomena.