Written by the Fiveable Content Team • Last updated September 2025
Written by the Fiveable Content Team • Last updated September 2025
Definition
Modern physics is a branch of physics that deals with post-Newtonian concepts, including quantum mechanics and relativity. It seeks to explain phenomena that classical physics cannot.
5 Must Know Facts For Your Next Test
Modern physics includes two major theories: quantum mechanics and the theory of relativity.
Quantum mechanics describes the behavior of particles at the atomic and subatomic levels.
The theory of relativity, developed by Albert Einstein, addresses the relationship between space and time.
Key experiments such as the photoelectric effect and double-slit experiment have shaped modern physics.
Modern physics has led to technological advancements like semiconductors, lasers, and nuclear energy.
A fundamental theory in physics describing physical properties of nature at small scales, typically atomic and subatomic levels.
Theory of Relativity: A theory formulated by Albert Einstein which encompasses both special relativity and general relativity, describing how space and time are interconnected.