INTRODUCTION TO

PHYSICSM. S. KHAN

TABLE OF CONTENTS

Origin of word “PHYSICS”1

What is physics?2

Branches of physics3

Regional map of Europe

GreeceLanguage: Greek

Word : Phusis (nature)

ORIGIN OF WORD “PHYSICS”

WHAT IS PHYSICS?

Physics is the study of various physical phenomena and thefundamental laws governing them.

BRANCHES OF PHYSICS

PHYSICS

Classical Physics Modern Physics

Developed before 19th century

Developed after 19th century

• Classical mechanics

• Waves• Thermodynamics• Electromagnetis

m• Optics

• Atomic physics• Nuclear physics• Quantum

mechanics

CLASSICAL MECHANICS

Classical mechanics is the study of effects produced by a force.

Motion of a car Loading on a bridge Working of hydraulic machines

Waves

Waves is the study of effects produced by a vibration or an oscillation.

Oscillation of a pendulum Sound produced by a violin Noise produced by a fighter jet

THERMODYNAMICS

Thermodynamics is the study of effects produced by a heat.

Expansion of mercury in a thermometer

Working of an engine Working of a refrigerator

ELECTROMAGNETISM

Electromagnetism is the study of effects produced by a charge or a magnet.

Light thundering Working of a heater Generation of electricity

OPTICS

Optics is the study of effects produced by a light.

Image produced by a plane mirror

Colour of the sky Colours seen in soap bubbles

ATOMIC PHYSICS

Atomic physics is the study of the structure of an atom and characteristics

of subatomic particles.

Working of a LASER Working of Compact Fluorescent Light

Neon sign board

NUCLEAR PHYSICS

Nuclear physics is the study of an atomic nuclei and their constituent particles.

Carbon dating RadiotherapyNuclear power generation

QUANTUM MECHANICS

Quantum mechanics deals with the behavior of matter and energy at atomic scale.

Electron microscope Magnetic Resonance ImagingSmart phones

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