Physics is the study of the physical world and its fundamental laws. It is a broad and challenging subject that encompasses a wide range of topics, from the smallest subatomic particles to the largest astronomical objects.

Physics is a foundational science, meaning that it provides the foundation for many other fields of study, such as engineering, chemistry, and medicine. It is also a very practical science, with applications in everything from everyday devices like cars and computers to cutting-edge technologies like lasers and nuclear power.