Video: Thaum twg JJ Thomson ua haujlwm?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Tus kws tshawb fawb Askiv Askiv Joseph John (J. J.) Thomson ( 1856 -1940) tau ua ntau qhov kev sim hauv xyoo 1897 tsim los kawm txog qhov xwm txheej ntawm hluav taws xob tawm hauv lub tshuab nqus tsev cathode-duab tshav, thaj chaw tau tshawb xyuas los ntawm ntau tus kws tshawb fawb thaum lub sijhawm.
Ib yam li ntawd ib tug yuav nug, JJ Thomson ua haujlwm qhov twg?
J. J. Thomson yug rau lub Kaum Ob Hlis 18, 1856, hauv Cheetham Hill, Askiv , thiab tau mus kawm Trinity College ntawm Cambridge , qhov chaw uas nws yuav los rau lub taub hau ntawm Cavendish Laboratory. Nws kev tshawb fawb Nyob rau hauv cathode rays coj mus rau kev tshawb pom ntawm lub electron, thiab nws nrhiav kev nrhav ntxiv hauv kev tshawb nrhiav atomic qauv.
Qhov thib ob, JJ Thomson atomic theory yog dab tsi? Cov ntsiab lus. J. J. Thomson tus kev sim nrog cathode ray raj pom tias tag nrho atoms muaj me me tsis zoo them subatomic hais los yog electrons. Thomson npaj lub plum pudding qauv ntawm lub atom , uas muaj qhov tsis zoo-them electrons embedded nyob rau hauv ib tug zoo-them "kua zaub."
Raws li txoj cai, JJ Thomson nrhiav tau dab tsi thiab thaum twg?
Xyoo 1897, J. J. Thomson nrhiav pom cov hluav taws xob los ntawm kev sim nrog Crookes, lossis cathode ray, raj. Nws pom tias cathode rays tau raug nqi. Thomson pom tau hais tias tus qauv lees txais ntawm ib qho atom ua tsis suav rau qhov tsis zoo lossis qhov txiaj ntsig zoo.
Thaum twg JJ Thomson yug thiab tuag?
Kaum Ob Hlis 18, 1856, Cheetham Hill, Manchester, United Kingdom
Pom zoo:
Thaum twg JJ Thomson nrhiav tau lub isotope?
Nyob rau xyoo 1856 - 1940. J. J. Thomson coj kev tshawb fawb mus rau qhov siab tshiab nrog nws xyoo 1897 nrhiav pom ntawm cov hluav taws xob - thawj subatomic particle. Nws kuj pom thawj cov pov thawj tias cov khoom ruaj khov tuaj yeem muaj nyob hauv isotopes thiab tau tsim ib qho ntawm cov cuab yeej muaj zog tshaj plaws hauv kev tshuaj ntsuam chemistry - qhov loj spectrometer
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