What Is Quantum Mechanics & How's It Different From Classical Mechanics? | Quantum Physics Lectures

This is the first video of our series 'Introduction to Quantum Mechanics'. In the first video, I have given a brief introduction to what is quantum mechanics and how is it different from classical mechanics and statistical mechanics. While classical physics is based on the idea that the future is deterministic, quantum mechanics is based on the assumption that the world is probabilistic and events take place at random chances.

I have also given an overview of how quantum mechanics began. At the beginning of the 20th century, classical physics was challenged on two fronts: The relativistic domain and the microscopic domain. In 1905, Albert Einstein found that Newton's laws of motion are no longer valid at velocities close to that of light. Then, in the first quarter of the 20th century, a series of experiments such as the black body radiation, the photoelectric effect, and the Compton effect showed that classical physics cannot event explain the behavior of light and the subatomic particles.

Historically, there are two representations of quantum mechanics: The Heisenberg picture in which the dynamical quantities are represented by matrice, and the Schrodinger picture, in which differential equations are used.

[ganeshbhandari]

Your confidence and way of teaching is very nice!! Be as simple as possible.

[siriprakash]

Totally loved it. I am going to keep a separate book and write down all the important points and learn quantum mechanics concisely. Tksm Rishab sir.

[soumyaranjanbarik]

Finally I got a place to learn the exact content which I wanted....Thank you Secrets of Universe for making this thing happen....

[bruhguy]

Again, as I mentioned earlier. Quality content is always there in this channel. Can't wait for future vidoes.

[ishanviraina]

Looking forward to the next part of this series..the way you explained it..amazing!! :)

[titikshadua]

I am super proud of you Rishab. You are doing great great job. I'll highly recommend your videos to all Physics students. The information you presented in this video is a brilliant summary of what a student tries to make sense of in the whole MSc. I was lucky to read a book which explained history of Physics to gain this much understanding. You did a great job. I wish u stratospheric success. Congratulations on this video. 💯🎊

[TyroneTsan]

I'm hooked, excellent description of the science that can be very confusing! Well done! I like your presentation of difficult mechanics.
Please tell me when part two will be available? I can't wait!

[madhumitham]

Looking forward for this awesome series!!

[feelingzhakkaas]

Excellent introduction in a nutshell. Liked your style it's impressive. God bless you.

[siddharthrajesh]

This was an amazing video!!! Eagerly waiting for the 3rd(Watched the 2nd too!)

[amalm.p]

Bro your confidence and the way you encountered the pronounce is very excellent and explained very sophisticated manner and astounding so bro we will be awaiting for your new videos in quantum series keep going full support and keep digging more deep I hope you will understand that

[abhasmitra]

Excellent beginning. Excellent Introduction. This is remarkable particularly because it is coming from someone who has just done his M.Sc. and has never taught formally. No doubt, in future, you will be recognized as a great physics educator, which you already are. Having said this, let me point out that, motion of an extended body in classical is not uniquely determined by CM alone. The distribution of mass and Moment of Inertia plays an important role for rotational motion. One request: An popped up in between this short 8 minute video. This distraction must be avoided for pleasant viewing. Good Job. Go ahead.

[moviestime]

Your way of teaching is very nice i need full course in the same manner keep it up i am waiting for next video

[varundinesh]

Absolutely amazing Rishabh! Just watched the three videos so far for the 3rd time and each time I pick up something more! Thank you so much for your crisp, concise, yet easy to understand explanations. Really looking forward to more :)

[mostafaelgarhy]

An awesome way to teach and simplify these difficult ideas, and a good general idea about mechanics in the beginning, good work.

[mithileshkogje]

Fairly good explanation brother...Best of luck. you are doing good. Liked it.👍👍

[arghyachaudhuri]

Sir the way in which you explained was amazing. This is going to be an amazing series.

[DaFlamezz]

How amazing is it that we have access to all this information through the internet.. we have everything at the tips of our fingers

[sarthakadewar]

yours pedagogy is speechless.. keep going and make such informative videos

[aidagumarova]

That was so helpful, simple yet excellent explanation!