Difference between revisions of "Fermion"
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===Meaning=== | ===Meaning=== | ||
'''Fermions''' are a group of [[Subatomic Particle|subatomic particles]] which are not able to exist in the same place at the same time as one another. | '''Fermions''' are a group of [[Subatomic Particle|subatomic particles]] which are not able to exist in the same place at the same time as one another. | ||
| + | ''NB: This definition is loose and inaccurate, but sufficient at this stage. It is more accurate to state that they are 'half-integer spin' and unable to have the same 'quantum state' as one another.'' | ||
===About Fermions=== | ===About Fermions=== | ||
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:**[[Muon]] - A type of [[lepton]] often referred to as a 'heavy electron' same [[Electrical Charge|charge]] as an [[electron]] (-1.60x10<sup>-19</sup>) but a [[mass]] 206 times the [[mass]] of an [[electron]]. | :**[[Muon]] - A type of [[lepton]] often referred to as a 'heavy electron' same [[Electrical Charge|charge]] as an [[electron]] (-1.60x10<sup>-19</sup>) but a [[mass]] 206 times the [[mass]] of an [[electron]]. | ||
:**[[Neutrino]] - A type of [[lepton]] with zero [[Electrical Charge|charge]] and negligible [[mass]]. | :**[[Neutrino]] - A type of [[lepton]] with zero [[Electrical Charge|charge]] and negligible [[mass]]. | ||
| − | :*[[Quark]]s - A group of [[Subatomic Particle|subatomic particles]] believed to be [[Fundamental Particle|fundamental]] but have never been observed on their own. They always exists in either a triplet of [[quark]]s or a [[quark]]-[[antiquark]] pair. | + | :*[[Quark]]s - A group of [[Subatomic Particle|subatomic particles]] believed to be [[Fundamental Particle|fundamental]] but have never been observed on their own. They always exists in either a triplet of [[quark]]s or a [[quark]]-[[antiquark]] pair. (''NB: A [[quark]]-[[antiquark]] pair known as a [[meson]] is a type of [[boson]].'') |
:*[[Hadron]]s - [[Subatomic Particle|Subatomic particles]] made of [[quark]]s. | :*[[Hadron]]s - [[Subatomic Particle|Subatomic particles]] made of [[quark]]s. | ||
:**[[Baryon]]s - A type of [[hadron]] made of 3 [[quark]]s. | :**[[Baryon]]s - A type of [[hadron]] made of 3 [[quark]]s. | ||
:***[[Proton]] - A type of [[baryon]] with a [[mass]] of 1.67x10<sup>-27</sup> and a [[Electrical Charge|charge]] of 1.60x10<sup>-19</sup>, made of 2 [[Up-quark]]s and 1 [[Down-quark]]. | :***[[Proton]] - A type of [[baryon]] with a [[mass]] of 1.67x10<sup>-27</sup> and a [[Electrical Charge|charge]] of 1.60x10<sup>-19</sup>, made of 2 [[Up-quark]]s and 1 [[Down-quark]]. | ||
:***[[Neutron]] - A type of [[baryon]] with a [[mass]] of 1.67x10<sup>-27</sup> and zero [[Electrical Charge|charge]], made of 2 [[Down-quark]]s and 1 [[Up-quark]]. | :***[[Neutron]] - A type of [[baryon]] with a [[mass]] of 1.67x10<sup>-27</sup> and zero [[Electrical Charge|charge]], made of 2 [[Down-quark]]s and 1 [[Up-quark]]. | ||
Revision as of 12:12, 18 July 2019
Key Stage 5
Meaning
Fermions are a group of subatomic particles which are not able to exist in the same place at the same time as one another. NB: This definition is loose and inaccurate, but sufficient at this stage. It is more accurate to state that they are 'half-integer spin' and unable to have the same 'quantum state' as one another.
About Fermions
- Subatomic particles are divided into two major categories; fermions and bosons. Bosons, in contrast to fermions, can exist in the same place at the same time as one another.
- The fermions include:
- Leptons - A group of fundamental particles
- Quarks - A group of subatomic particles believed to be fundamental but have never been observed on their own. They always exists in either a triplet of quarks or a quark-antiquark pair. (NB: A quark-antiquark pair known as a meson is a type of boson.)
- Hadrons - Subatomic particles made of quarks.