# what are the 5 branches of physics?

## Classical mechanics

Relativity

Thermodynamics

Electromagnetism/Optics

Quantum mechanics

## I don't know if there are only five. I have friends in biophysics, astrophysics, astronomy, high energy physics, condensed matter physics, nuclear energy, and physics education. Most engineering is applied physics.

## Because I have need 7 branches of physics

Argently

## The five main branches of physics are:

1. Mechanics: This branch deals with the study of motion and its causes. It explores concepts such as forces, energy, and momentum.

To study mechanics, one can start by understanding Newton's laws of motion and kinematics. Textbooks and online resources on classical mechanics provide a comprehensive introduction to this branch.

2. Thermodynamics: Thermodynamics examines energy and how it flows. It covers topics like heat, temperature, entropy, and the laws governing energy transfer.

To delve into this branch, one can begin with learning about the laws of thermodynamics and their applications. There are various textbooks and online courses available that cover the fundamentals of thermodynamics.

3. Electromagnetism: Electromagnetism focuses on the interaction between electric and magnetic fields. It includes topics such as electricity, magnetism, electromagnetic waves, and electric circuits.

To understand electromagnetism, one can start by grasping the basic principles of electric fields and magnetic fields. Textbooks and online resources on electromagnetism provide a solid foundation for further exploration.

4. Optics: Optics is the study of light and its interaction with matter. It covers topics like reflection, refraction, diffraction, and the behavior of light waves.

To learn about optics, one can begin with the properties of light and relevant laws, such as Snell's law and the principles of interference and diffraction. Textbooks on optics and online resources can be helpful references.

5. Quantum Mechanics: Quantum mechanics explores the behavior of matter and energy on the smallest scales. It involves phenomena like wave-particle duality, quantum superposition, and quantum entanglement.

To start understanding quantum mechanics, one can learn about the basics of wave-particle duality and the SchrÃ¶dinger equation. Textbooks on quantum mechanics and online courses can guide you through the concepts and mathematics involved.

It's important to note that these branches of physics often overlap and interact with each other. Additionally, there are other specialized branches, such as nuclear physics, particle physics, and astrophysics, which focus on specific areas of study within the broader field of physics.