available through the Outline of the history of physics. Elements of what became physics were drawn primarily from the fields of astronomy, optics, and mechanics...

Physics is the natural science of matter, involving the study of matter, its fundamental constituents, its motion and behavior through space and time,...

outline is provided as an overview of and topical guide to physics: Physics – natural science that involves the study of matter and its motion through spacetime...

found to be composed of even smaller particles such as quarks. Particle physics studies these smallest particles; nuclear physics studies atomic nuclei...

Theoretical physics is a branch of physics that employs mathematical models and abstractions of physical objects and systems to rationalize, explain and...

methods and principles of physics and chemistry in the study of astronomical objects and phenomena. As one of the founders of the discipline, James Keeler...

Modern physics is a branch of physics that developed in the early 20th century and onward or branches greatly influenced by early 20th century physics. Notable...

The history of radiation protection begins at the turn of the 19th and 20th centuries with the realization that ionizing radiation from natural and artificial...

Classical physics is a group of physics theories that predate modern, more complete, or more widely applicable theories. If a currently accepted theory...

applied in physics. See History of physics for an overview and Outline of the history of physics for related histories. Variational principles are found...