2. Branches Of Physics
▪ Physics can be classified into various branches but classical physics is
mainly concerned with energy and matter.
▪ The traditional branches of classical physics are Optics, Acoustics,
Electromagnetics, and Classical mechanics.
▪ With the rapid development of physics, the scope of the subject is
growing so large that it is not possible to cover physics under the
above branches.
▪ A number of main branches of physics are discussed in the Next
slides
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3. Branches Of Physics
Mechanics
▪ Mechanics is the branch of physics which deals with the motion of an
object without or with the reference of force.
▪ Mechanics can be further divided into two branches namely
quantum mechanics and classical mechanics.
▪ Quantum mechanics deals with the behavior of smallest particles like
neutrons, protons, and electrons,
▪ while classical mechanics is the branch that deals with laws of
motion of forces and physical objects
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4. Branches Of Physics
Optics
▪ This branch of physics deals with the behavior, propagation, and
properties of light.
▪ Optics can be simply described as the study of the behavior of
infrared light, visible light, and ultraviolet.
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5. Branches Of Physics
Optics
The properties of optics are applied in various fields of Physics-
▪ The refraction phenomenon is applied in the case of lenses (Convex
and concave) for the purpose of forming an image of the object.
▪ Geometrical optics is used in studies of how the images form in an
optical system.
▪ In medical applications, it is used in the optical diagnosis of the
mysteries of the human body.
▪ It is used in the therapeutical and surgeries of the human tissues.
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6. Branches Of Physics
▪ Thermodynamics
▪ Thermodynamics deals with the study of heat and its relation with
work and energy.
▪ Thermodynamics also deals with the transmission of heat energy by
means of convection, conduction, and radiation.
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7. Branches Of Physics
▪ Thermodynamics
There are four laws of thermodynamics and are given below:
▪ Zeroth law of thermodynamics
▪ First law of thermodynamics
▪ Second law of thermodynamics
▪ Third law of thermodynamics
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8. Branches Of Physics
Electromagnetism
▪ Electromagnetism deals with the study of electromagnetic force like
electric fields, light, magnetic fields, etc.
▪ there are two aspects of electromagnetism which are “electricity” and
“magnetism”
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9. Branches Of Physics
Electromagnetism
A few applications of electromagnetism are:
▪ Electromagnetism serves as a fundamental working principle for many
of the home appliances in household applications.
▪ The Maglev trains or high-speed trains work on the principle of
electromagnetism.
▪ Electromagnetic radiations are used in the communication system to
transfer data from the source to the receiver
▪ In industries, starting from small instruments to large power
equipment, electromagnetism is used at least at one stage of their
working.
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10. Branches Of Physics
Relativity
▪ This branch of physics deals with the theorem that was formulated by
Albert Einstein.
▪ The theory of relativity states that space and time are relative and all
the motion must be relative to a frame of reference.
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11. Branches Of Physics
Acoustic
▪ Acoustic deals with the study of sound and its transmission,
production, and effects.
▪ Acoustics mainly involves the mechanical waves in gases, liquids, and
solids which includes vibration, sound, ultrasound, and infrasound
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