Thermionic emission tshwm sim hauv cov hlau uas tau rhuab mus rau qhov kub siab heev. Nyob rau hauv lwm yam lus, thermionic emission tshwm sim, thaum loj npaum li cas ntawm sab nraud zog nyob rau hauv daim ntawv ntawm tshav kub yog muab rau cov dawb electrons nyob rau hauv cov hlau.
Lub hauv paus ntawm cov thermionic emission yog dab tsi?
Thermionic emission, tso tawm ntawm cov khoom siv hluav taws xob los ntawm cov khoom siv hluav taws xob, dav siv los ua cov khoom siv hluav taws xob hauv cov raj siv hluav taws xob (xws li cov raj duab hauv TV) hauv kev siv hluav taws xob thiab kev sib txuas lus. Qhov tshwm sim tau pom thawj zaug (1883) los ntawm Thomas A.
Vim li cas thiaj li thermionic emission tshwm sim?
Thermionic emission yog emission ntawm electrons los ntawm cov hlau rhuab (cathode). … Raws li qhov kub nce, cov electrons saum npoo nce zog. Lub zog tau txais los ntawm qhov chaw electrons tso cai rau lawv txav mus deb ntawm qhov chaw yog li ua rau emission.
Dab tsi yog daim ntawv thov ntawm thermionic emission?
Piv txwv daim ntawv thov ntawm thermionic emission muaj xws li lub tshuab nqus tsev, diode li qub, cathode ray tube, electron tubes, electron microscopes, X-ray raj, thermionic converters, thiab electrodynamic tethers.
Qhov twg thermionic emission tshwm sim hauv xray raj?
Nyob rau hauv lub cim ntawm X-ray ntau lawm, ib tug cathode filamentmachined nyob rau hauv lub khob cathode yog qhib, ua rau kub kub ntawm lub cathode filament. Cov cua sov ntawm cov filament ua rau kev tso tawm ntawmelectrons hauv cov txheej txheem hu ua thermionic emission.
