To understand the difference between phase and group velocity of waves, consider the following analogy. A group of people, say city marathon runners, start from the starting at the same…
Year: 2014
De-Broglie Matter Waves
In quantum mechanics, the concept of matter waves (or de Broglie waves) reflects the wave-particle duality of matter. The theory was proposed by Louis de Broglie in 1924 in his…
What is Wave-Particle Duality
Publicized early in the debate about whether light was composed of particles or waves, a wave-particle dual nature soon was found to be characteristic of electrons as well. The evidence…
What is Wave Mechanics
The modern form of quantum theory; an extension of quantum mechanics based on Schrodinger’s equation; atomic events are explained as interactions between particle waves. The branch of quantum physics that accounts…
Introduction of Modern Physics Notes for Engineering Physics
The term modern physics refers to the post-Newtonian conception of physics. In simpler form, modern physics deals with the underlying structure of the smallest particles in nature (quantum mechanics), as…
Mass Energy Equivalence Notes for Engineering Physics
Mass Energy Equivalence Notes for Engineering Physics: Below explained equation gives the universal Mass Energy equivalence. This is another major contribution of Einstein. It signifies the manifestation of energy into the…
Variation of Mass with Velocity Notes for Engineering Physics
Variation of Mass with Velocity Notes for Engineering Physics: According to Einstein, the mass of the body in motion is different from the mass of the body at rest. We…
Relativistic Addition of Velocities Notes for Engineering Physics BTech 1st Year
Addition of Velocities Notes for Engineering Physics: Addition of velocities is simply the addition of vectors. direction of the vector and its components on the x and y axis of…
Relativistic Mechanics Notes for Engineering Physics BTech 1st Year
Relativistic Mechanics Notes for Engineering Physics BTech 1st Year: The branch of theoretical physics that considers the classical laws of motion of bodies or particles at rates of motion ν…