Video: Thaum twg JJ Thomson nrhiav tau lub isotope?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Nyob 1856 – 1940.
J. J. Thomson coj science mus rau qhov siab tshiab nrog nws 1897 nrhiav pom ntawm cov electron - thawj subatomic particle. Nws kuj pom thawj cov pov thawj tias cov ntsiab lus ruaj khov tuaj yeem muaj nyob li isotopes thiab tau tsim ib qho ntawm cov cuab yeej muaj zog tshaj plaws hauv kev tshuaj ntsuam chemistry - qhov loj spectrometer
Yog li ntawd, JJ Thomson nrhiav tau ob yam dab tsi?
Xyoo 1897, J. J. Thomson nrhiav pom cov electron los ntawm kev sim nrog Crookes, lossis cathode ray, raj. Nws pom tau tias cov kab hluav taws xob cathode tau raug them tsis zoo. Tsis tas li ntawd, nws kuj tau kawm txog qhov zoo ntawm cov khoom siv hauv neon gas.
Kuj Paub, JJ Thomson yog leej twg thiab nws nrhiav tau dab tsi? J. J. Thomson yug lub Kaum Ob Hlis 18, 1856, hauv Cheetham Hill, England, thiab tau mus kawm Trinity College ntawm Cambridge, qhov twg nws yuav tuaj rau lub taub hau Cavendish Laboratory. Nws txoj kev tshawb fawb hauv cathode rays coj mus rau nrhiav pom ntawm electron, thiab nws nrhiav kev tshiab ntxiv hauv kev tshawb nrhiav atomic qauv.
Raws li txoj cai, thaum twg JJ Thomson nrhiav tau lub tshuab hluav taws xob?
1897
JJ Thomson atomic txoj kev xav yog dab tsi?
Cov ntsiab lus. J. J. Thomson tus kev sim nrog cathode ray raj pom tau 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."
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