Theoretical physics is a branch of physics that employs mathematical models and abstractions of physical objects and systems to rationalize, explain and predict natural phenomena.This is in contrast to experimental physics, which uses experimental tools to probe these phenomena.. The advancement of science generally depends on the interplay between experimental studies and …

A physicist is a scientist who specializes in the field of physics, which encompasses the interactions of matter and energy at all length and time scales in the physical universe. Physicists generally are interested in the root or ultimate causes of phenomena, and usually frame their understanding in mathematical terms.Physicists work across a wide range of research fields, …