Quantum Wavefunction | Quantum physics | Physics | Khan Academy

In this video David gives an introductory explanation of what the quantum wavefunction is, how to use it, and where it comes from.

Physics on Khan Academy: Physics is the study of the basic principles that govern the physical world around us. We'll start by looking at motion itself. Then, we'll learn about forces, momentum, energy, and other concepts in lots of different physical situations. To get the most out of physics, you'll need a solid understanding of algebra and a basic understanding of trigonometry.

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[articoli]

So far, the clearest explanation I've seen.

[lokeshs]

It was hard to listen while Schrodinger was staring at us

[mrpickles]

My favorite is how he automatically knew what common questions people would have about this. Like, guys this is just the way it is, don't worry about the equation, just accept that psi squared is density probability. period.

[AlexHunter]

I've been looking for this explanation for months. Makes much more sense now

[blackpink]

So the lecture started with the very question which kept me depressed and from really trying to understand the quantum mechanics...so thank you so much for clearing my doubts.

[leosteinman]

Me understanding it: oh that’s cool I’m pretty satisfied
Kahn: if I were you I wouldn’t be satisfied
Me: yea Fr I ain’t satisfied at all yet

[mozorellastick]

This is like one of the best videos I've ever seen. Better than my university lecturers. Thank you so much

[pgong]

I’ve just begun reading a book on quantum physics! Your demonstration about the wave function is clear and sensible ! My take away is that the thing that is waving is the amplitude of probability wave!

[snehashukla]

At least he made it clear that we're not the only ones who don't get it
Thanks man!

[saleemshaikh]

Schrodinger couldn't interpret the equation, then Max was born.*wave intensifies*

[chimedemon]

Schrodinger: so uhhh... yes... I will tell you how I interpenetrate this equatio- do you wanna explain your own way of interpenetrating this?
Max Born: is this a test?
Schrodinger: yep...

[duvallroberts]

I find great joy in these physics videos. They help my interests in quantum mechanics grow.

[danielkmchow]

Addressing questions that an amateur like me want to ask and explaining it clearly. Well done!

[yankoshbadal]

Fun fact :- a single electron is present in every possible points within the probability amplitude until it is observed ...

See double slit experiment ...

[hairyaries]

Hey Khan academy. I had a thought. Maybe you can say yay or nay to it. If the wave function can happen with particles and atoms (with mass), could this account for all the extra mass they calculated needs to be in the universe? If electrons and atoms are reacting (interfering) with all their other possible realities, then is it possible that their mass is duplicated, if only temporarily? It's hard to imagine that a probability of something would be real enough to have mass, but on the other hand, it's definitely real enough to interfere with itself and all its probable twin buddies, so why not? Thanks

[alabiadewale]

I really understand this now. Thanks sir. I'm ahead of the class now.

[rakhibhuyan]

This is the best explanation of wave function in YouTube. But we don't find such clear explanation on every topic that we come across, so can you refer a book on QM which we should follow to be conceptually clear?

[peshnjugush]

Wow that is amazing proffesor Dave... it's true you understand concepts in minutes of which have been taught for a couple of hours in lectures in vain of understanding

[adrianbiber]

But *where* is the electron? Floating in space, held by what? And why is it a 2D plane? Is that the distance from a nucleus?

[HamnaAzhar]

Thank you soooo much for making it much easier to understand...