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.
