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Physics
Learn about what physics actually is, why it's awesome, and why you should come with me on a ride through understanding the wacky universe in which we live.
What Is Physics?
The word physics is derived from the Latin word physica, which means "natural thing."
According to the Oxford English Dictionary, physics is defined as:
"The branch of science concerned with the nature and properties of matter and energy. The subject matter of physics includes mechanics, heat, light and other radiation, sound, electricity, magnetism, and the structure of atoms."
The scope of physics is very wide and vast. It deals with not only the tinniest particles of atoms, but also natural phenomenon like the galaxy, the milky way, solar and lunar eclipses, and more. While it is true that physics is a branch of science, there are many sub-branches within the field of physics. In this article, we will explore each of them in depth.
While there are more branches sprouting up as science and technology progresses, there are generally 11 branches of physics. These are as follows.
Branches of Physics
Classical physics Modern physics Nuclear physics Atomic physics Geophysics Biophysics Mechanics Acoustics Optics Thermodynamics Astrophysics
1. Classical Physics
This branch of physics is mainly concerned with the laws of motion and gravitation as outlined in Sir Isaac Newton and James Clark Maxwell’s kinetic theory and thermodynamics, respectively. This branch of physics deals mostly with matter and energy. Often, physics which date before 1900 are considered classical physics, whereas physic which date after 1900 are considered modern physics.
In classical physics, energy and matter are considered separate entities. Acoustics, optics, classical mechanics, and electromagnetics are traditionally branches within classical physics.
As Newton's Laws are one of the main features of classical physics.
2. Modern Physics
Modern physics is a branch of physics that is mainly concerned with the theory of relativity and quantum mechanics.
Albert Einstein and Max Plank were the pioneers of modern of physics as the first scientists to introduce the theory of relativity and quantum mechanics, respectively.
What Are the Two Pillars of Modern Physics?
The two pillars of modern physics are as follows.
Albert Einstein's theory of relativityMax Plank's quantum theory.
3. Nuclear Physics
Nuclear physics is a branch of physics that deals with the constituents, structure, behaviour and interactions of atomic nuclei. This branch of physics should not be confused with atomic physics, which studies the atom as a whole, including its electrons.
According to the Microsoft Encarta encyclopedia, nuclear physics is defined as:
“The branch of physics in which the structure, forces, and behaviour of the atomic nucleus are studied.”
In the modern age, nuclear physics has become very wide in its scope and has been applied in many fields. It is used in power generation, nuclear weapons, medicines, magnetic resonance, imaging, industrial and agricultural isotopes, and more.
4. Atomic Physics
Atomic physics is a branch of physics that deals with the composition of the atom apart from the nucleus. It is mainly concerned with the arrangement and behaviour of electrons in the shells around the nucleus. Thus, atomic physics mostly examines electrons, ions, and neutral atoms.
5. Geophysics
Geophysics is a branch of physics that deals with the study of the Earth. It is mainly concerned with the shape, structure and composition of the Earth, but geophysicists also study gravitational force, magnetic fields, earthquakes, magma, and more.
6. Biophysics
Biophysics studies biological problems and the structure of molecules in living organisms using techniques derived from physics. One of the structure of DNA (Deoxyribonucleic Acid) by James Watson and Francis Crick.
7. Mechanical Physics is a branch of physics that deals with the motion of material objects under the influence of forces.
Classical mechanics deals with the laws of motion of physical (i.e. electrons, neutrons, and protons).
8. Acoustics
The word "acoustics" is derived from a Greek word akouen, meaning "to hear." Acoustics also deals with the effect of sounds in various mediums (i.e. gas, liquid, and solids).
9.Optics is a branch of physics that studies electromagnetic radiation (for example, light and infrared radiation)
10. Thermodynamics is a branch of physics that deals with heat and temperature and their relation to energy and work.
PHYSICS MADE EASY
I am Amir Bahadar Shah, USA.
amirworldamir@gmail.com

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