Bohr's Quantum Mechanics Part 1

In April of 1913, a Danish Physicist named Niels Bohr changed the way we viewed nature. The Bohr Model for the Hydrogen Atom put forth a quantized picture that had never before been seen.

[saulremi]

@1MAKEDONEC1 This derivation is usually reserved for a Modern Physics course, which is usually taken by undergrad physics students, but sometimes engineering students will take this course also. Glad it helped!

[MAKEDONEC]

Does anyone else study this?

Thanks man very much, you've helped me with my physics test tomorrow!

[saulremi]

@nate22621 "n" is the "principal quantum number" and is an integer that counts from 1 to infinity, depending on the energy of the electron. So n could be 1 or 2 or 3.... The "r" isn't squared in equation 4 because this is the "electric potential energy" due to the Coulomb interaction. This energy term is due to the Force. So the energy is inverse-r, not inverse-r^2. Hope this helps. Our hyperphysics link on our eHub will have the quantities discussed that I put in parentheses above. Peace!

[imtheboctilian]

Thank you so much for this, for years I have just used quantum physics by David Bohm, though not all of the problems were easy for me to follow, though after going around the internet I believe that i now have a great understanding of all matters. I just wish they would have taught this to me in highschool! Even being in the IB program I still relied only on studying in my own spare time

[achee]

At 2:55 why did you write coulomb's law with  only r why not with r square.?

[Mack]

Im taking quantum mechanics at UC berkeley...this is by far a better explanation than what was in lecture. there should be YouTube degrees

[deathscreton]

I've been trying to decide what to do when I go to college. I've had two thoughts, medicine, or Quantum Physics. I've always loved science, so astropyhics, QM and the such have always pulled me in, but math was never a subject I was good at(not counting Algebra, that was easy). So I'm watching this videos to try and get a grasp of what I might be doing. Are these videos good interpretations of what I might face? Who else took a major for QP/QM? Should I look elsewhere since math isn't a strong point for me?

[tallyrobishawmarlow]

when you combine equation (3) and (5), why does (3) not stay negative? 

[nate]

I got two questions
what exactly is n?
why isn't r squared in equation 4?

[Winfield]

-mvr=nh(bar) then you get v=nh(bar)/mr where did minus go? and also what is w/n

[mddilshadislam]

thank u sir for the mention why there was a minus sign in energy equation at the very last.

[quack]

I'm a sophomore and I'm starting to under stand about quantum mechanics and it's equations

[irvanka]

thanks, very clear :)

help for my exams

[imtheboctilian]

Nice, I am currently in the IB program too, though I don't think you will have to know that

[padmapriya]

isn't that r^2 in coulomb's law?

[Deceptibotimus]

Great vid! must be annoying being left-handed on a whiteboard :S

[ZombieBze]

yeah im doing it in undergrad Forensic and Analytical Chemistry

[JB-rlik]

Well I just wanted to know who Niels Bohr was, but I sat through this whole thing and nodded to myself allot because pretending is fun.

[liilianalopez]

Bohr was cooler than i thought in highschool. I'm trying to see how to understand this after eight years in the liberal arts department lol.

[nate]

@bestdamntutoring ah thanks man, damn ya'll are the best