Video: Puas yog quarks indivisible?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Raws li peb paub, quarks yog sib cais ; i.e., quarks yog cov teeb meem me tshaj plaws hauv lub nucleus. Peb qhov kev nkag siab tam sim no yog qhov quark yog qhov zoo li cov ntsiab lus uas tsis muaj qhov dav!
Ib yam li ntawd, puas muaj dab tsi me dua li lub quark?
A quark yog ib qho tseem ceeb particle uas yog me dua txhua yam ntsuas peb tam sim no muaj tab sis qhov ntawd txhais tau li cas muaj tsis muaj dab tsi me me ? Tom qab qhov kev tshawb pom ntawm quarks nyob rau hauv cov protons thiab neutrons thaum ntxov 1970s, ib txhia theorists pom zoo quarks tej zaum lawv tus kheej muaj cov khoom hu ua 'preons'.
quarks puas tuaj yeem tawg? Peb ua tau coj lub atom thiab pom tias nws yog tsim los ntawm protons, neutrons, thiab electrons. Ib yam li electrons, quarks tau tsi be tawg los yog vim lawv ua tau tsi be tawg lwm yam ntxiv, quarks thiab electrons raug xa mus rau "fundamental particles".
Qhov thib ob, quarks yog dab tsi?
Quark
| Ib tug proton yog tsim los ntawm ob lub quarks, ib tug down quark, thiab cov gluons uas kho cov rog "binding" lawv ua ke. Kev xaiv xim ntawm tus kheej quarks yog arbitrary, tab sis tag nrho peb xim yuav tsum muaj nyob. | |
|---|---|
| Kev sib xyaw | Elementary particle |
| Hom | 6 (nce, nqis, coj txawv txawv, ntxim nyiam, hauv qab, thiab sab saum toj) |
Puas yog quarks ua suab?
Ob leeg protons thiab neutrons yog ua tawm ntawm quarks thiab gluons. Cov quarks - raws li kev paub niaj hnub no - tsis muaj dab tsi ua nrog suab (kev vibrations ntawm huab cua molecules). Txawm li cas los xij, qee qhov kev xav (tseem tsis tau lees paub) qhia tias lawv yuav yog kev vibrations ntawm ntau qhov chaw. Txoj kev xav hu ua Superstring Theory.
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