Physics: Main Branches of Physics
What is Physics?
The word “Physics” comes from the Greek word “Physikos” meaning “natural”. Physics is defined as a science which deals with the interaction of matter and energy.
Physics helps to get the answers of queries as to:
I. Where and how clouds are formed?
ii. How lightning flashes in the clouds?
iii. Why some objects catch fire and others do not?
iv. What is the nature of heat? How is it produced?
v. How matter appears ¡n different states?
7 MAIN BRANCHES OF PHYSICS
Main branches of physics are given below:
1. Mechanics: It deals with the motion of objects with or without reference to force.
2. Electricity: It ¡s Concerned with the phenomena and effects related to electric charges.
3. Electromagnetism: It deals with observations, principles, laws, and methods that relate
electricity and magnetism.
4. Solid State Physics: It ¡s concerned with the structure and properties of solid materials.
5. Atomic Physics: It is concerned with the structure and properties of solid material.
6. Nuclear physics: this branch is concerned with the structure arid properties of the atom.
7. Plasma Physics: It ¡s concerned with the properties of highly ionized atoms forming a mixture
of bare nuclei (nuclei without electrons) and electrons.
8. Biophysics: It is concerned with the application of physical methods and explanations to biophysical systems and structure.
9. Astrophysics: It is concerned with the study of the physics of astronomical bodies.
In addition to these branches also there are other branches, say lowtemperature physics,
particle physics, optics, etc.)
IMPORTANCE OF PHYSICS IN DAILY LIFE
Physics is involved in one way or the other, physics is playing a vital in framing our lifestyle and influencing our way of thinking.
1. Electrical appliances
We use several electrical appliances. For example, electric fan, electric bulb, refrigerator, air conditioner, juicer, grinder, etc. they all use “electricity”.
2: Engines
Busses, cars, railway carriages, airplanes, etc. are run by engines. The engine of these vehicles are manufactured on the principles of “thermodynamics”.
3: Electronic Devices
We listen to radio programmers and telecast from TV stations. In all electronic devices and
Appliances “solidstate physics” plays a vital role.
4: Laser Technology
Laser technology is widely used in defense systems, metallurgy, medical science, and astronomy which has its roots in “atomic physics”.
5:Nuclear Physics
Production of nuclear energy is the area of “nuclear physics”
And Many more fields……
List of Physics Articles

Mechanics
 Kinematics
 Motion and its type
 Distance and displacement Differences
 Speed and Velocity with comparison table
 Acceleration and its types
 Three Equations of motion
 The motion of a Freefall
 Projectile motion
 Dynamics I: Force
 Forces with Types
 Force and mass
 Actionreaction
 Weight
 Dynamics
 Friction and its types
 Forces in two dimensions
 Centripetal force formula
 Centrifugal force
 Difference between centripetal force and centrifugal force
 The inertial and noninertial frame of reference
 Energy
 Work and its formula
 Energy and its types
 Kinetic energy with examples
 Potential energy with examples
 Conservation of energy derivation
 Power and its equation
 Simple machines with examples
 Dynamics II: Momentum
 Relation between Impulse and momentum
 Conservation of momentum Examples
 Momentum and energy relation
 Rotational motion
 Rotational kinematics
 Rotational inertia with examples
 Rotational dynamics With examples
 Angular momentum with formula
 Rotational energy and its formula
 Rolling
 Planetary motion
 Geocentrism theory
 Heliocentrism theory
 Universal gravitational Law
 Gravitational potential energy formula
 The gravity of extended bodies
 Periodic motion
 Springs
 Simple harmonic motion with examples
 Simple Pendulum
 Resonance and its examples
 Elasticity and its Examples
 Fluids
 Density formula
 Pressure formula
 Buoyancy force
 Fluid flow
 Viscosity examples
 Drag force
 Pascal law
 Archimedes principle
 Bernoulli Equation
 Equation of continuity
 Kinematics

Thermal physics
 Heat and temperature
 Temperature and its scales
 Difference between heat and temperature
 Thermal expansion examples and applications
 Gas laws
 Kineticmolecular theory
 Calorimetry
 Sensible heat
 Latent heat of fusion and vaporization
 Heat transfer
 Conduction heat transfer
 Convection heat transfer
 Radiation heat transfer
 Thermodynamics
 Heat and work
 Heat Engines
 Refrigerators
 Examples of entropy
 Absolute zero
 Heat and temperature

Waves and optics
 Wave phenomena
 The nature of waves and their properties
 Periodic waves examples
 Interference and superposition
 Sound Waves
 The nature of sound
 Intensity of sound
 Doppler effect and its cases
 Shock waves examples
 Diffraction and interference differences
 Standing waves examples
 Beats
 Music and noise comparison
 Physical optics
 The nature of light
 Polarization examples
 Doppler effect (light)
 Diffraction and interference (light)
 Interference Of light
 Colors and their types
 Geometric optics
 Reflection of light
 Refraction of light
 Spherical mirrors uses
 Spherical lenses types and applications
 Aberration and its types
 Wave phenomena

Electricity and magnetism
 Electrostatics
 Electric charge and its Types
 Coulomb’s law formula
 Electric field and electric field lines
 Electric potential formula
 Gauss’s law and its applications
 Conductors and insulators
 Difference between emf and potential difference
 Electrostatic applications
 Types of Capacitors
 Dielectric materials
 Types of Batteries
 Current Electricity
 Electric current formula
 Electrical resistance
 Electric power and its formula
 DC circuits
 Types of Resistors in circuits
 Types of Batteries in circuits
 Capacitors in circuits
 Kirchhoff’s rules
 Magnetostatics
 Magnetism
 Electromagnetism and its applications
 Ampère’s law formula
 Electromagnetic force
 Magnetodynamics
 Electromagnetic induction and its applications
 Faraday’s law of induction
 Lenz’ law of induction
 Inductance
 AC circuits
 Alternating current
 RC circuits
 RL circuits
 LC circuits
 Electromagnetic waves
 Maxwell’s equations
 Electromagnetic waves
 Electromagnetic spectrum
 Electrostatics

Modern physics
 Relativity
 Spacetime
 Massenergy
 General relativity
 Quanta
 Blackbody radiation
 Photoelectric effect
 Xrays
 Antimatter
 Wave mechanics
 Matter waves
 Atomic models
 Semiconductors
 Condensed matter
 Nuclear physics
 Isotopes
 Radioactive decay
 Half life
 Binding energy
 Fission
 Fusion
 Nucleosynthesis
 Nuclear weapons
 Radiobiology

Particle physics
 Quantum electrodynamics
 Quantum chromodynamics
 Quantum flavordynamics
 The Standard Model
 Beyond the Standard Model
 Relativity

Foundations
 Units
 International system of units
 Gaussian system of units
 BritishAmerican system of units
 Miscellaneous units
 Time
 Unit conversion
 Measurement
 Significant digits
 Order of magnitude
 Vectors
 Trigonometry
 Vector addition and subtraction
 Vector resolution and components
 Vector multiplication
 Units