Physics is the study of fundamental laws governing natural phenomena. It deals with the most basic aspects of nature, including force, motion, heat, sound, matter, electricity, magnetism, and light. Physics seeks to discover the basic rules that describe physical phenomena through observation and experimentation. It is divided into classical and modern physics. Classical physics includes mechanics, wave physics, thermodynamics, electromagnetism, and optics, while modern physics covers atomic, nuclear, and quantum physics. Physics forms the foundation of other sciences like biology, chemistry, geology, and astronomy, as well as various engineering fields.