Fermion
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.
Podcasts:
-
by Warmen
-
by Warmen
-
by Warmen
-
by Warmen
-
by Warmen
-
by Warmen
-
by Warmen
-
by Warmen
-
by Warmen
-
by Warmen
-
by Warmen
-
by Warmen
-
by Warmen
-
by Vermin
-
by Vermin
-
by Vermin
-
by Vermin
-
by Vermin
-
by Vermin
-
by Vermin
-
by Vermin
-
by Vermin
-
by Vermin
-
by Pheromone
-
by Fireman
-
by Fireman
-
by Fireman
-
by Fireman
-
by Fireman
-
by Fireman
-
by Fireman
-
by Fireman
-
by Fireman
-
by Pheromone
-
by Pheromone
-
by Pheromone
-
by Pheromone
-
by Pheromone
-
by Pheromone
-
by Pheromone
-
by Pheromone
-
by Pheromone
-
by Pheromone
-
by Pheromone
-
by Pheromone
-
by Pheromone
-
by Pheromone
-
by Pheromone
-
by Fireman
-
by Pheromone
Somebody's Watching Me
by: WarmenSomebody'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