Thermionic emission, tso tawm ntawm electrons los ntawm cov khoom siv cua sov, dav siv los ua ib qhov chaw ntawm electrons nyob rau hauv cov pa electron raj (xws li, TV duab raj) hauv kev lag luam 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.
Thermionic emission tshwm sim nyob qhov twg?
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.
Qhov txawv ntawm photoemission thiab thermal emission yog dab tsi?
Photoemission tshwm sim thaum lub tshuab hluav taws xob nqus cov hluav taws xob photonic uas tso cai rau cov hluav taws xob tawm saum lub tshuab nqus tsev. Thermionic emission yog txheej txheem uas lub zog thermal ua rau nthuav dav ntawm cov khoom siv hluav taws xob xws li qee lub zog hluav taws xob ntau dua yuav tawm mus rau hauv lub tshuab nqus tsev.
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, cathoderay tube, electron tubes, electron microscopes, X-ray tubes, thermionic converters, and electrodynamic tethers.
