Fundamental particles

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bidrohi
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Fundamental particles

Unread post by bidrohi » Mon Dec 27, 2010 2:49 am

What are fundamental particles like deuterons, hadrons, fermions etc. ? Pls give detailed explanation...

tanvirab
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Re: Fundamental particles

Unread post by tanvirab » Mon Dec 27, 2010 4:15 pm

Deuterons and hadrons are not fundamental particles.

Fermion is not a particle. It is a class of particle which includes both fundamental and composite particles.

Dipan
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Re: Fundamental particles

Unread post by Dipan » Mon Dec 27, 2010 11:09 pm

All the fundamental particles are diveded into two....1.Boson 2.Fermion....the particles which can be stay together(particles of light) and have integer spin are the boson....on the other side which can't stay together (e) and have a non integer spin are fermion...you can learn more from wikipedia..........

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Abhijeet Dutta
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Re: Fundamental particles

Unread post by Abhijeet Dutta » Sat Jan 29, 2011 12:52 pm

electrons can stay together in a orbital and they're fermions. So why they can't??
Thing is in case of more intense light beam like laser this fermion and boson difference can be well understood.
In laser the many photon particles having integer spin can be at the same phase at the same time.Phase bolte onek kichu mean kore jemon tader intensity ekoi hoi O tader wavelength O ekoi hoi; more precisely bolle wave function ekhoi hoi ja duti electron er khetre kokhono hoy na.
Ekti orbital e kebol duite electron thakte pare jader spin number ta eke oporer biporit. Orthat ekta +1/2 hole arekta -1/2. (Orbital holo Shell er upobivag jate electron der paor probability beshi)
Ei principle er ekta nam o ache "Pauli Exclusiion Principle"
Ar fermion ra eta mene chole ar boson ra eta mane na tara(boson) force mediating jemon graviton er karone jodi gravity bol karjokor hoy then graviton holo ekti Boson.
Shout aloud scream aloud let me hear you go

Dipan
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Re: Fundamental particles

Unread post by Dipan » Tue Feb 01, 2011 10:05 pm

OoOoOo...I know that e stay together in a orbital.But there is a distance between their position.If you want to set them without any distance will they stay together?They can't bcoz they contain same type of charge.I just wanted to say this.

tanvirab
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Re: Fundamental particles

Unread post by tanvirab » Wed Feb 02, 2011 12:08 am

Actually, properties of Fermion does not depend on the charge. Electrons cannot stay in the same orbital (with the same spin) for other fundamental reasons, not because of charge.

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leonardo shawon
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Re: Fundamental particles

Unread post by leonardo shawon » Wed Feb 02, 2011 12:14 am

does same thing happen for Proton??? as All positive charges stay together inside the nucleus.
Ibtehaz Shawon
BRAC University.

long way to go .....

tanvirab
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Re: Fundamental particles

Unread post by tanvirab » Wed Feb 02, 2011 12:33 am

Two protons cannot stay in the same state either. In the nucleus all protons are in different states. Same for neutrons. They are all Fermions.

On the other hand, photons are Bosons and one can have as many photons of the same state as they want.

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Abhijeet Dutta
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Re: Fundamental particles

Unread post by Abhijeet Dutta » Tue Mar 08, 2011 12:20 am

Quarks are the building blocks of Nuclei like Proton and neutron
Its explained by a highly impressive theory named Quantum Chromodynamics
See Protons can't be at the same phase too because they've activity going on inside thats famously known as swamping of colours where Quarks are held together by gulon
More decsicive question you could have asked why being neutral Neutrons have magnetic moment
that's also the activity of this elementary particle
And Guys this elementary things are well placed in the Standard Model of particles thats so successful in describing the 3 main forces till date except gravity
Shout aloud scream aloud let me hear you go

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