What are the sub-branches of physics and their definitions?

Answer 1

Classical Physics

Classical Mechanics (Newtonian Mechanics)- study of motion and forces.

Electromagnitism- Study of electricity and magnetism.

Statistical Mechanics- Study of theoretical predictions on the behavior of macroscopic system based on statistical law that govern its component particles.

Acoustics- Study of production, control, transmission, reception, and effects of sounds.

Thermodynamics- study of heat, temperature and energy.

Optics- Study of nature, properties of light, and optical instruments.

Modern Physics

Relativity- Study of motion near the speed of light and space-time geometry.

Quantum Mechanics- Study of motion of very small particles.

Atomic Physics- Study of structure and behavior of atoms.

Molecular Physics- Study of structure and behavior of molecules

Particle Physics (High-energy Physics)- Study of structure and behavior of subatomic and fundamental particles.

Condensed Matter Physics- Study of properties of bulk matter such as solids and liquids.

Astrophysics- study of the behavior, physical properties, and dynamis processes of celestial objects and phenomena.

Answer 2

The major Branches of Physics are as below:

1. Acoustics: Deals with Sound.
2. Astrophysics: Space and extraterrestrial studies
3. Atomic Physics: Study of Atoms.
4. Biophysics: Application of Rules of physics in Biological Processes.
5. Chemical Physics: Interdisciplinary study of Physics and Chemistry.
6. Electromagnetics: Study of Electrical and Magnetic Phenomena.
7. Mechanics: Study of Motion.
8. Optics: Study of Light.
9. Quantum Physics: Study of Quantum Theory and its applications.
10. Thermodynamics: Study of interaction of heat and matter.

Physics is the science of matter and energy, and the movement and interactions between them both.

The branches of physics are classical mechanics, thermodynamics and statistical mechanics, electromagnetism, relativity, and quantum mechanics.

The most popular areas of physics are

• mechanics.
• electromagnetism.
• heat and thermodynamics.
• atomic theory.
• relativity.
• astrophysics.
• theoretical physics.
• optics, geophysics.
• biophysics.
• particle physics.
• sound.
• light.
• atomic and molecular physics.
• nuclear physics.
• solid state physics.
• plasma physics.
• geophysics.
• biophysics.

Answer 3

Physics Branches

Here is a list of main physics branches, along with a summary of what is studied in that particular branch. Every branch of physics is further divided into smaller sub-branches. As explained before, every one of these branches except mathematical physics, has an experimental and theoretical sub-division. The classification of these branches is artificial and they overlap onto each other, to create further specialized fields.

Classical Mechanics

This is the oldest branch of physics which analytically describes motion of all objects on the macroscopic scales. It describes everything from, why large objects like balls bounce, why pendulum swings to why planets revolve around the Sun! It describes 'mechanics' of all kinds on the large scale and its classical, because it cannot explain motion at atomic level. Fluid mechanics is one specialized sub-branch of classical mechanics, which describes the physics of all types of fluids.

Mathematical Physics

This is the branch of physics, which gives theoretical physics its tools of analysis. Mathematics is the language of nature and therefore if one wants to understand nature, one must understand mathematics. Mathematics brings precision to physics. It is the branch which is an overlap of pure mathematics and physics. Mathematical physics techniques form the toolbox of a physicist. Just like a workman must use the right kind of tools to get his job done, so must a physicist use the right mathematical tools to solve a problem! The more and more deeply we explore nature, every new law discovered can only be expressed in a new form of mathematics.

Classical Electrodynamics

This field is the most broadly applied of all the physics branches. Classical electrodynamics is based on Maxwell's laws of electromagnetism, which describes all kinds of electromagnetic phenomena from atomic to global scales. It is the theoretical basis of optics, telecommunication and many other sub-fields. Its domain extends over all of nature, as the 'Electromagnetic Force' is all pervading and we live in an electromagnetic world.

Quantum Mechanics

This branch describes a new kind of mechanics, which can explain phenomena at the sub-atomic level, which classical mechanics fails to describe. It provides the clearest picture of nature at the sub-atomic scales. Quantum physics, is based on the principle of uncertainty, and predicts all phenomena in terms of probabilities. It describes a weird sub-atomic world, which is totally different from the world at macroscopic scales. Studying quantum physics requires quite a bit of mathematical expertise and it is the theoretical basis of all branches, that describe phenomena at atomic or sub-atomic scales.

Thermodynamics and Statistical Mechanics

Thermodynamics and statistical physics is one of the core physics branches, which gives a theoretical mechanism to describe the motion of and phenomena in multi-particle systems. Even though a single particle motion can be analyzed by quantum mechanics, it cannot describe multi-particle systems analytically, as the variables of calculation there are too many. So, a statistical approach is needed that describes motion of matter in bulk. Thermodynamics is a predecessor of statistical mechanics. Statistical mechanics combined with quantum mechanics, forms quantum statistical mechanics.

Condensed Matter Physics

Condensed Matter Physics is a sub-branch of quantum physics and statistical mechanics, which describes all phenomena that occur in matter, which is in condensed form. This includes everything from liquids, solid and gases. The physics of semiconductor devices, which make today's age of information technology possible, is a result of research developments in condensed matter physics. It describes all phenomena in bulk matter like ferromagnetism, superfluidity and superconductivity.

Nuclear Physics

Nuclear physics describes all the phenomena that occur at the level of the atomic nucleus. It deals with and explains phenomena like radioactivity, nuclear fission and nuclear fusion. Developments in nuclear physics led to the production of nuclear weapons like the atom bomb, the Hydrogen bomb and made nuclear energy source available to mankind.

Quantum Field theory

This is the physics which describes the physics of particles, which are very small and very fast. It is also known as particle physics. It is based on the three theoretical foundations of quantum mechanics, special theory of relativity and the concept of fields. It is based on the unification of all these three foundations and it describes the physics of fundamental particles of matter. It is one of the most difficult physics branches, which describe the ultimate building blocks of nature.

Non-Linear Dynamics

This is a sub-field of classical mechanics, which solves the problems on macroscopic scales, which cannot be solved by classical mechanics. It is an advanced branch of mathematics, which attempts to solve non-linear differential equations of motion, which are not amenable to a solution by conventional techniques. A greater part of it is also known as 'Chaos Theory', which delves in to the organized chaos that exists in the macroscopic world. It is the most happening branch of physics currently.

Astronomy and Astrophysics

Astronomy is the observational study of the universe in all its manifestations and astrophysics (a confluence of all other branches), is the theoretical basis, which can explain all those phenomena. It is the most all encompassing of all the physics branches, which has a singular goal of explaining every phenomenon that occurs in the universe.

General Theory of Relativity and Cosmology

The general theory of relativity is the correct theory, which describes gravitation at all scales. It interprets gravity not as a force, but as a consequence of the curvature of space-time. Space around massive objects actually gets warped and bent. Gravity is the result of this warping of space time. Special relativity unifies space and time in to 'Spacetime' and general relativity makes 'Spacetime' interact with matter. How much space warps, depends on the content of matter and energy in it. In simple words, general relativity is described by, 'Matter tells space how to bend, space tells matter how to move!'
Classical physics(Newtonian physics) and modern physics(relativity and quantum physics)

Answer 4

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By: Cyrus Lee

Answer 5

Type your answer here... there are 5 branches of physics

Answer 6

I suggest you read the Wikipedia article on "Physics" for an introduction. Then, come back here if you have more specific questions.

Answer 7

give 5 branches of physics