Classical field theory

Classical field theory is a framework in physics that describes how physical fields, such as electromagnetic fields, gravitational fields, or fluid fields, interact with matter and evolve over time. It aims to formulate physical laws in terms of fields, rather than point particles, allowing for a more comprehensive understanding of phenomena that involve continuous distributions of matter and energy. ### Key Features of Classical Field Theory: 1. **Fields**: In classical field theory, fields are functions defined over space and time.

Electromagnetism is a fundamental branch of physics that deals with the study of electric and magnetic fields, their interactions, and their effects on matter. It encompasses a wide range of phenomena, including the behavior of charged particles, the generation of electric currents, and the propagation of electromagnetic waves. The key concepts of electromagnetism include: 1. **Electric Charge**: There are two types of electric charges, positive and negative. Like charges repel each other, while opposite charges attract.

Gravity is a fundamental force of nature that causes objects with mass to attract one another. It is one of the four fundamental forces in the universe, alongside electromagnetism, the strong nuclear force, and the weak nuclear force. In everyday terms, gravity is what gives weight to physical objects and causes them to fall towards the Earth when dropped. The strength of the gravitational force between two objects depends on their masses and the distance between them.