Difference Between Classical Mechanics and Quantum Mechanics

Quantum Chemistry Lecture 1:

What is Quantum Mechanics? Why classical mechanics failed? Applications of Quantum Mechanics

Quantum Chemistry Lecture 2:

Difference between Quantum Mechanics and Classical Mechanics

Quantum Chemistry Lecture 3:

Heisenberg Uncertainty Principle

Quantum Chemistry Lecture 4:

De Broglie Hypothesis | Wave and Particle nature of matter

Quantum Chemistry Lecture 5:

Applications and Significance of Schrodinger Wave Equation

Quantum Chemistry Lecture 6:

What is wave Function? What does it tell us? Born interpretation of wave Function | Probability of finding a particle

Quantum Chemistry Lecture 7:

Eigen Functions and Eigen values along with Examples

Quantum Chemistry Lecture 8:

What is *Normalization* of wave function? *Why* the wave function should be normalized? *Significance* of Normalization

*Numerical Problems* on Normalization of wave function

Quantum Chemistry Lecture 9:

*Orthogonality* of wave function and *orthonormal* wave function with *Numerical Problems*

Quantum Chemistry Lecture 10:

What are operators in Quantum Mechanics and How to use them?

Quantum Chemistry Lecture 11:

Algebra of Operators in Quantum Mechanics | Properties | Addition subtraction and Multiplication

Quantum Chemistry Lecture 12:

Commutative and Non Commutative Operators with solved Problems

Quantum Chemistry Lecture 13:

Rules for writing an operator

Quantum Chemistry Lecture 14:

Hermitian Operator in Quantum Mechanics

Quantum Chemistry Lecture 15:

Properties of Hermitian Operator

Quantum Chemistry Lecture 16:

Second Property:

*Eigen Functions of Hermitian Operator corresponding to different Eigen Values are orthogonal*

Quantum Chemistry Lecture 17:

Prove that the operator for linear momentum is Hermitian

Quantum Chemistry Lecture 18:

Prove that the kinetic Energy operator is Hermitian Operator

Quantum Chemistry Lecture 19:

if two operators are Hermitian then their product is also Hermitian if they commute

Quantum Chemistry Lecture 20:

Postulates of Quantum Mechanics

Quantum Chemistry Lecture 21:

Time independent Schrodinger wave equation

Quantum Chemistry Lecture 22:

Steady state schrodinger wave equation

Quantum Chemistry Lecture 23:

Conclusion of particle in one dimensional box:

Quantum Chemistry Lecture 24:

Conclusion of particle in one dimensional box

[divyashiupadhyay]

Quantum mechanics is more accurate than classical mechanics. 1:26
In classical mechanics, there is a concept known as determinism, which implies that if you know the initial conditions of a system precisely, you can theoretically predict its future state with 100% accuracy. However, this doesn't mean that everything can be measured with 100% accuracy.
In reality, the Heisenberg Uncertainty Principle, a fundamental concept in quantum mechanics, states that there is a limit to the precision with which certain pairs of properties (like position and momentum) can be simultaneously known. This introduces a fundamental limit to the accuracy of measurements at the quantum level.

So, while classical mechanics aims for deterministic predictions, quantum mechanics introduces inherent uncertainties that challenge the idea of measuring everything with absolute precision.

[imrankhanimrankahn]

wao ...what a besr lecture...uff i tierd alott for this topic..but this is 100 percent ..correct which i wanted

[arslan]

Sir quantum mechanic me or bhi topics cover krwaye plz jese ke classical wave equation wagera superpositions

[kavyasharma]

Sir...Macroscopic include all the daily life object with which we deal sir? Can u give an example of classical meachanics with daily life..??

[ruchikapatil]

Thank you. I am eternally grateful sir.

[banajadandasena]

Everything in one sheet of paper, thanks