7. • In order to play cricket, football, chess, hockey or any other
game we follow some rules
• Similarly, the physical phenomena of our nature follow some
rules or principles
9. PHYSICS
Physics is the study of various physical
phenomena and the fundamental laws
governing them.
NOTE: The laws of physics are not invented by people,
they are only discovered
10. • Physics is a natural science
(Deals with natural phenomena)
• Physics is a physical science
(Deals with our physical world)
• Physics is a fundamental science
(Deals with most basic things of nature)
14. PHYSICS
Classical Physics Modern Physics
Developed before
19th century
Developed after
19th century
• Classical mechanics
• Wave physics
• Thermodynamics
• Electromagnetism
• Optics
• Atomic physics
• Nuclear physics
• Quantum mechanics
16. WAVE PHYSICS
Wave physics is the study of effects produced by a vibration
or an oscillation.
Sound produced by a violin
To and fro motion of swing Waves on water surface
17. 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
18. ELECTROMAGNETISM
Electromagnetism is the study of effects produced by an electric
charge or a magnet.
Working of a speaker Generation of electricity
Working of an UPS inverter
19. OPTICS
Optics is the study of effects produced by light.
Image produced by a plane
mirror
Colour of the sky
Eyesight correction using
spectacles
20. ATOMIC PHYSICS
Atomic physics is the study of the structure of an atom and
characteristics of subatomic particles.
Working of a LASER
Neon sign board Working of X-Ray Machine
21. NUCLEAR PHYSICS
Nuclear physics is the study of an atomic nuclei and their
constituent particles.
Carbon dating
Working of Radiotherapy
Machine
Nuclear power generation
22. QUANTUM MECHANICS
Quantum mechanics deals with the behavior of matter and energy
at atomic scale.
Magnetic Resonance Imaging
Smart phones Electron microscope
24. Without knowledge of fundamental
principles of physics
Biologists cannot understand
• How brain controls our body?
• How plants carryout photosynthesis?
25. Without knowledge of fundamental
principles of physics
Chemists cannot understand
• Why firework produce different colours?
• How Goldplating works?
26. Without knowledge of fundamental
principles of physics
Geologists cannot understand
• Formation and eruption of lava
• Why earthquake occurs?
27. Without knowledge of fundamental
principles of physics
Astronomers cannot understand
• How planets revolve around the sun?
• Why stars shine in night sky?
29. Without knowledge of fundamental
principles of physics
Civil Engineers cannot design buildings,
bridges, dams, overhead water tanks etc.
30. Without knowledge of fundamental
principles of physics
Mechanical Engineers cannot design
automobiles, space vehicles, wind turbines,
machines etc.
31. Without knowledge of fundamental
principles of physics
Electrical Engineers cannot design power
substations, transformers, motors, electrical
panels etc.
32. Without knowledge of fundamental
principles of physics
Electronic Engineers cannot design circuits,
antenna, radar system, robotic arm etc.
