NIET
Course: B. Tech-I Sem
Subject: Engineering Physics
Subject Code: PHM101B
Unit-II (Quantum Mechanics & Nanotechnology)
Topic: Wave particle duality, de Broglie matter waves,
Heisenberg’s uncertainty principle
Dr. Harish Kumar
Assistant Professor
Department of Applied Sciences
NIET, NIMS University Rajasthan, Jaipur
, NIET
WAVE-PARTICLE DUALITY OF LIGHT
Evidence for wave-nature of light
• Diffraction and interference
Evidence for particle-nature of light
• Photoelectric effect
• Compton effect
, NIET
Wave-particle duality
Wave-particle duality is the concept in quantum mechanics that every particle or
quantum entity may be described as either a particle or a wave.
It expresses the inability of the classical concepts of particle or wave to fully
describe the behavior of quantum-scale objects.
According to wave-particle theory, light has the property of both wave and particle.
Wave-particle duality refers to the fundamental property of matter where at one
moment it appears like a wave, and yet at another moment, it acts like a particle.
Course: B. Tech-I Sem
Subject: Engineering Physics
Subject Code: PHM101B
Unit-II (Quantum Mechanics & Nanotechnology)
Topic: Wave particle duality, de Broglie matter waves,
Heisenberg’s uncertainty principle
Dr. Harish Kumar
Assistant Professor
Department of Applied Sciences
NIET, NIMS University Rajasthan, Jaipur
, NIET
WAVE-PARTICLE DUALITY OF LIGHT
Evidence for wave-nature of light
• Diffraction and interference
Evidence for particle-nature of light
• Photoelectric effect
• Compton effect
, NIET
Wave-particle duality
Wave-particle duality is the concept in quantum mechanics that every particle or
quantum entity may be described as either a particle or a wave.
It expresses the inability of the classical concepts of particle or wave to fully
describe the behavior of quantum-scale objects.
According to wave-particle theory, light has the property of both wave and particle.
Wave-particle duality refers to the fundamental property of matter where at one
moment it appears like a wave, and yet at another moment, it acts like a particle.
