- published: 14 May 2015
- views: 597283
In particle physics, a fermion (a name coined by Paul Dirac from the surname of Enrico Fermi) is any particle characterized by Fermi–Dirac statistics. These particles obey the Pauli exclusion principle. Fermions include all quarks and leptons, as well as any composite particle made of an odd number of these, such as all baryons and many atoms and nuclei. Fermions differ from bosons, which obey Bose–Einstein statistics.
A fermion can be an elementary particle, such as the electron, or it can be a composite particle, such as the proton. According to the spin-statistics theorem in any reasonable relativistic quantum field theory, particles with integer spin are bosons, while particles with half-integer spin are fermions.
Besides this spin characteristic, fermions have another specific property: they possess conserved baryon or lepton quantum numbers. Therefore what is usually referred as the spin statistics relation is in fact a spin statistics-quantum number relation.
As a consequence of the Pauli exclusion principle, only one fermion can occupy a particular quantum state at any given time. If multiple fermions have the same spatial probability distribution, then at least one property of each fermion, such as its spin, must be different. Fermions are usually associated with matter, whereas bosons are generally force carrier particles, although in the current state of particle physics the distinction between the two concepts is unclear. Weakly interacting fermions can also display bosonic behavior under extreme conditions. At low temperature fermions show superfluidity for uncharged particles and superconductivity for charged particles.
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This video tutorial sets out to explain that all fundamental particles are either bosons or fermions, defining the difference between them, with examples. Also showing that some composite particles such as hadrons and atoms can also be classified as bosons or fermions. There are free to copy notes for this topic here http://www.fizzics.org There is a follow-up video on quarks and leptons here https://youtu.be/pdVybAwVqUs
Playing with (and against) a really awesome runed Fermion, thanks ObeyTre for letting us use this sweet monster.
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Genre : Psychedelic Trance Composed by Makou Visualized by CRAZYRED, Jin
In this video I continue with my series of tutorial videos on Quantum Statistics. This is intended to be part of both my Quantum Physics/Mechanics and Thermodynamics/Statistical-Mechanics tutorial courses. It's pitched at undergraduate level. I prove have two 'takes' at quantum statistics, one is grinding the formulae from multiplicity functions and the second (more elegant) is a thermodynamic argument focusing on the all important partition function. Thank you for watching and I hope that this matches your requirements. Please feel free to provide feedback via comments and share with your friends. See my website for more: www.universityphysicstutorials.com
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http://www.ministudyministry.com - PLEASE SUBSCRIBE AND SHARE! A major leap forward has been made in the discovery of a new fermion that is its own antiparticle. This particle is thought to be utilized for quantum computing. What does this mean for humanity? Leave a comment below. Original Article - http://www.scientificamerican.com/article/majorana-particle-matter-and-antimatter/ and http://www.sciencedaily.com/releases/2015/12/151218085628.htm Video on Majorana Particles - https://youtu.be/XHUgetdkJmg Just in time for Christmas, Check Out: CERN ALCHEMY: Demonic Stargates and Creating Alien Life (FULL) - https://www.youtube.com/watch?v=eEKvxQAkY6U The Large Hadron Collider: The Extraordinary Story of the Higgs Boson and Other Stuff That Will Blow Your Mind – Don Lincoln - http://am...
Somebody's Watching Me
(Originally performed by Rockwell)
I'm just an average man with an average life
I work from nine to five, hey hell I pay the price
But I want is to be left alone in my average home
But why do I always feel like I'm in the Twilight Zone
I always feel like somebody's watchin' me
And I have no privacy
I always feel like somebody's watchin' me
Is it just a dream?
When I come home at night
I lock the door real tight
People call me on the phone I'm trying to avoid
Well, can the people really see me or am I just paranoid
When I'm in the shower, I'm afraid to wash my hair
cuz when i open my eyes to find someone standing there
People say I'm crazy, just a little touch
But maybe showers remind me of Psycho too much
That's why...
I always feel like somebody's watchin' me
And I have no privacy
I always feel like somebody's watchin' me
Is it just a dream?
I don't know anymore
Always watching me
Was it mother fuckin mailman watching me huh?
I don't feel safe anymore, oh what a mess
I wonder who's watching me now?
Who?
The IRS?
I always feel like somebody's watchin' me
So is it just a dream?
I always feel like somebody's watchin' me
Who's playin tricks on me?
I always feel like somebody's watchin' me
I always feel like somebody's watchin' me
Who's playin tricks on me?
I always feel like somebody's watchin' me