2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Tam sim no tau pom ib zaj yeeb yaj kiab ntawm hluav taws xob. … Nrog rau kev siv thev naus laus zis tshiab los tsim cov pulses luv luv los ntawm lub teeb laser hnyav, thiaj li hu ua attosecond pulses, cov kws tshawb fawb ntawm Lund University Kws Qhia Ntawv ntawm Engineering hauv Sweden tau tswj xyuas lub zog hluav taws xob thawj zaug.
Puas yog ib qho hluav taws xob pom?
Electrons yog cov subatomic hais uas orbit lub nucleus ntawm ib lub atom. … Cov orbits tsis pom txoj hauv kev zoo li lub orbit ntawm lub ntiaj teb lossis lub cev xilethi-aus. Yog vim li cas yog tias atoms me me tsis zoo thiab qhov zoo tshaj plaws microscopes tuaj yeem pom ntau ntawm atoms ntawm qhov ntsuas.
Peb puas tuaj yeem pom cov hluav taws xob nrog lub tshuab tsom?
Lub peev xwm ntawm lub tshuab ntsuas hluav taws xob ntsuas hluav taws xob rau cov duab ntau cov qauv ua rau nws muaj ntau yam. … Thiab zoo li kis tau tus mob microscopes, nws kuj muaj qhov zoo txaus daws teeb meem los tsim cov duab ntawm atoms. Txawm tias tag nrho cov kev txhim kho no, electron microscopes tsis yog, qhov tseeb, thawjntsuas "pom" atoms.
tib neeg puas pom cov hluav taws xob?
Peb tsis tuaj yeem pom cov subatomic hais ncaj qha, tab sis tsuas yog tuaj yeem cuam tshuam los ntawm kev soj ntsuam ntawm qhov cuam tshuam tsis ncaj xws li lem. Yog tias muaj ntau thiab lawv tab tom tso qee cov hluav taws xob, thiab yog tias peb ci qee cov hluav taws xob rau tom qab ntawd thiab tau txais cov lus teb rov qab qhov no kuj yuav ua rau pom zoo.
Yuav ua li cas peb thiaj paub tias muaj hluav taws xob?
Thomson, tusBritish physicist uas nrhiav tau lub electron nyob rau hauv 1897, ua pov thawj tias atoms yuav muab faib, raws li lub Chemical Heritage Foundation. Nws muaj peev xwm txiav txim siab txog lub neej ntawm electrons los ntawm kawm txog cov khoom ntawm hluav taws xob tawm hauv cov hlab ntsha cathode.
Pom zoo:
Puas muaj leej twg muaj txoj sia nyob tsis muaj tus kab mob vwm?
Kev Kho Mob Tsis Paub: Tsuas yog Ib Tus Neeg Muaj sia nyob tus kab mob vwm yam tsis muaj tshuaj tiv thaiv - Tab sis ua li cas? Plaub xyoos tom qab nws yuav luag tuag los ntawm tus kab mob vwm, Jeanna Giese tau raug tshaj tawm raws li thawj tus neeg paub tias tau muaj tus kab mob no tsis tau txais tshuaj tiv thaiv.
Koj puas pom leej twg pom koj cov nkoj?
Fleet sau tuaj yeem pom leej twg saib lawv cov Fleets, suav nrog cov nyiaj uas muaj kev tiv thaiv Tweets, los ntawm nias rau hauv lawv cov Fleets thiab coj mus rhaub rau ' Pom Los Ntawm' cov ntawv hauv qab. Koj puas pom leej twg saib koj cov nkoj?
Puas muaj leej twg puas tau pom astatine?
Txij li thaum nws tau pom thawj zaug hauv xyoo 1940, astatine tau xav tias yog qhov tsawg tshaj plaws ntawm txhua yam tshwm sim hauv ntiaj teb. … Zoo, yog vim tsis muaj leej twg tau pom astatine. Astatine tuaj yeem pom qhov twg? Astatine tsuas pom tau ntawm lub ntiaj teb tom qab kev lwj ntawm thorium thiab uranium.
Puas muaj leej twg puas tau pom lub hnub qub tawg?
Astronomers tau pom cov ntaub ntawv tawg supernova - qhov loj tshaj plaws puas tau pom. Qhov zoo tshaj plaws stellar tawg tau tso tawm lub teeb txaus los npog nws lub galaxy tag nrho, outshining ib txwm supernovae los ntawm 500 zaug. Puas pom lub hnub qub tawg?
Leej twg thawj zaug pom electron?
Joseph John Thomson (J. J. Thomson, 1856-1940; saib daim duab ntawm American Institute of Physics) tau lees paub dav dav tias yog tus neeg nrhiav pom hluav taws xob. Leej twg hu ua electron? (Lub sij hawm "electron" yog coined nyob rau hauv 1891 los ntawm G.
