2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
In 1948–1950, Raimond Castaing, saib xyuas los ntawm André Guinier, tsim thawj lub tshuab hluav taws xob "microsonde électronique" (electron microprobe) ntawm ONERA.
electron microprobe siv rau dab tsi?
Ib qho khoom siv hluav taws xob micro-analyzer yog cov cuab yeej microbeam siv feem ntau rau qhov hauv qhov chaw tsis muaj kev puas tsuaj tshuaj ntsuam xyuas cov qauv ntsuas ntsuas. EPMA kuj tseem hu ua electron microprobe, lossis tsuas yog sojntsuam. Nws yog lub hauv paus zoo ib yam li SEM, nrog rau kev muaj peev xwm ntxiv ntawm kev tshuaj xyuas tshuaj.
Electron microprobe tsom xam yog dab tsi?
Electron microprobe tsom xam (EMPA) muab cov ntaub ntawv ntawm cov tshuaj muaj pes tsawg leeg ntawm cov zaub mov thiab lawv cov kev sib raug zoo hauv archaeological ceramicslos ntawm kev siv cov nqaj nqaim hluav taws xob los txhawb cov emission ntawm X-rays.
Yuav ua li cas lub tshuab tsom iav yog lub microprobe?
Electron microprobes tau nruab nrog optical microscopesco-axial rau cov kab hluav taws xob tau teeb tsa hauv txoj hauv kev uas thaum tus qauv saum npoo yog nyob rau hauv kev ua kom pom tseeb nrog cov khoom siv kho qhov muag / lub koob yees duab, nws kuj yog nyob rau hauv X-ray tsom xam, piv txwv li, nws nyob ntawm Rowland lub voj voog.
Leej twg tsim lub SEM?
Siv cov khoom siv hluav taws xob, uas muaj qhov luv luv luv dua li lub teeb, nws tuaj yeem daws cov khoom ntawm tus kheej ntawm qhov kev nthuav dav dua. Plaub xyoos tom qab, Max Knoll nrhiav pom ib txoj hauv kev los cheb ib lub teeb hluav taws xob hla lubnto ntawm tus qauv, tsim thawj scanning electron microscope (SEM) cov duab.
Pom zoo:
Dab tsi yog qhov txawv ntawm lub tshuab hluav taws xob thiab lub tshuab hluav taws xob?
Gramophone: Txhua lub suab kaw suab, lossis cov cuab yeej ua si yav dhau los-cov suab kaw, tshwj xeeb tshaj yog tias nws siv lub tiaj tiaj tiaj. Phonograph: Txhua lub suab kaw suab, lossis cov cuab yeej siv rau kev ua si cov suab uas tau kaw dhau los, tshwj xeeb tshaj yog tias nws siv lub tog raj kheej tig.
Puas yog lub tshuab hluav taws xob xav tau lub tshuab hluav taws xob?
Diesels tsis xav tau lawv - pob tseg li qub / tshuab tawm li qub yog tsim los rau qhov chaw nruab nrab ntawm lub turbo thiab lub throttle. Nyob rau hauv ib tug petrol engine, ntawm siab boost, thaum koj snap lub throttle kaw lub turbo tseem tig.
Puas hluav taws xob hluav taws xob puas tsim hluav taws xob?
Coal feem ntau siv roj los tsim hluav taws xobhauv Tebchaws Meskas. Hauv cov chaw tsim hluav taws xob hluav taws xob hluav taws xob, cov hluav taws xob bituminous, subbituminous thee, lossis lignite raug hlawv. Cov cua kub uas tsim los ntawm kev sib xyaw ntawm cov thee yog siv los hloov cov dej mus rau hauv qhov chaw siab zog, uas tsav lub turbine, uas tsim hluav taws xob.
Lub tshuab hluav taws xob hluav taws xob tsim hluav taws xob li cas?
Piav seb lub twj hluav taws xob hluav taws xob tsim hluav taws xob hla lub membrane li cas. Los ntawm pum electrons hla lub membrane, sab uas cov electrons raug tshem tawm muaj qhov zoo dua, thaum sab tau txais cov hluav taws xob ntau muaj qhov tsis zoo.
Puas yog lub tshuab hluav taws xob puas muaj lub tshuab hluav taws xob?
Vim li cas lub tshuab hluav taws xob sab hauv combustion yuav tsum tsis muaj lub tshuab hluav taws xob los ua kom cov roj tsis zoo li roj av? Spark plugs yog siv nyob rau hauv cov roj cav mus ignite cov pa roj sib tov whereas nyob rau hauv diesel engines lub xub ntiag ntawm lub txim plugs yog tsis tsim nyog.
