Quantum Mechanics (Chapter 5 of 6)

Once you get past existence coming and going... and virtual particles... and uncertainty... and exclusion, then you are ready to enjoy the REALLY weird stuff in the quantum world.

Category:

Science & Technology

Tags:

• Quantum
• Mechanics
• Electron
• Atom
• Wave
• Function
• Dynamical
• State
• Exclusion
• Principle
• Pauli
• Bosons
• Fermions
• Fermi
• Dirac

[thruid3]

Fermions have quantized spin equal to 1/2, 3/2, 5/2 of what ? Or 1/2 of what ? The energy of the electron ?

[cassiopeiaproject]

@thruid3 Spin is measured in units of angular momentum -- and one "unit" is equal to Planck's Constant divided by 2pi (h-bar).

[TechnologyGod]

If the Pauli exclusion theory were true and lasers only work because of it, then how do MASERs exists, since they use beams of coherently arranged electrons(which are fermions) and not photons. Or does the spin of the electrons keep things in check. Or does a MASER work on a completely different process.

[cassiopeiaproject]

@TechnologyGod MASERS are beams of coherent electromagnetic radiation much like lasers are. They have much longer wavelengths, however.  They are not beams of electrons.

[philaboston]

dont listen to lloplop. he is an insecure jerk who doesnt know shit about the complicated world of quantum mechanics. stay curious and interested and you will learn. this applies to all disciplines not just quantum mechanics. You are 100% correct for wanting to ask questions. lloplop is an insecure shithead who thinks he knows it all but in reality is nothing more but a stupid fuck.

[scoopapa]

There are no things that you just have to accept. He asked a valid question, and if you don't know the answer, say that, rather than criticizing his question. Understanding why the laws of nature work the way they do is one of the ultimate goals of science, as it would take all of our theories that rely on these laws to a much higher level of understanding.

[GateMessenger]

A graviton is a Boson particle? Lol.

[tomhetistgut3]

watched it once, watched it multiple times, took notes.... still don't understand :P

[ScientificScience]

3:30 You say that only 2 electrons can occupy each shell. Don't you mean orbital rather than shell, or have I misunderstood?

[superhamzah85]

@whoatemyhummus

Well it would be, hence special relativity.

[superhamzah85]

lolz I thought he said anti-Semitic functions.

[michiganwolverine17]

@lloplop the quickest way to find answers is to ask questions. research makes you hunt down whatever small topic he wants, but at the same time gives you information you already know or dont want. Obviously if hes watching this video, he is doing some sort of research. He just had a small question. If you cant respect that, then you are the moron. He wasnt bothering you in any way whatsoever. Take a pill and relax before you have a heart attack you retard.

[michiganwolverine17]

@sidewaysfcs0718 imagine that the electron is in one spot, then disappears. a little while later it reappears left of its original position. The electron is stationary at both points, but the fact that at one time it was at one point, and then changed position, it gives the idea that it has "moved" and therefore it has motion.

[thruid3]

Ahhh, OK......thx.