Video: Yuav ua li cas cov neeg pom ci nyob rau hauv qhov tsaus ntuj?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Phosphors muab lub teeb pom kev tom qab muaj zog. Qhov no txhais tau tias lawv muaj rau tsau lub teeb rau ib pliag ua ntej lawv yuav ci hauv qhov tsaus ntuj . Qee zaum glow-hauv-qhov-dub khoom yuav nkaus xwb ci ntsa iab qaug zog heev rau ib lub sij hawm luv luv. Feem ntau, koj muaj rau muab lawv tso rau hauv ib qho heev tsaus ntuj qhov chaw pom lawv cov zaub ntsuab ci ntsa iab.
Ua kom pom qhov no, nws ua haujlwm li cas ci hauv qhov tsaus ntuj?
Luv teb: Tej yam uas ci hauv qhov tsaus ntuj muaj cov khoom hu ua phosphor, uas muaj peev xwm ua kom lub teeb ci tom qab nws tau ua kom muaj zog. Cov khoom zoo li no ua ntej nqus lub zog rau lub sijhawm ntev thaum raug lub teeb thiab tom qab ntawd radiate pom lub teeb nyob rau hauv tsaus ntuj.
Tsis tas li ntawd, dab tsi lub ntsiab yog ci nyob rau hauv qhov tsaus ntuj? tritium - radioactive isotope ntawm hydrogen, feem ntau pom hauv phom pom thiab saib. radon - cov xim no glows nyob ntawm nws qhov kub thiab txias. Nws yog phosphorescent daj nyob ze nws qhov chaw khov, dhau los ua xim liab raws li nws tau txias dua. radium - ci ntsuab vim yog phosphor uas yog siv los tso tawm teeb.
Ib sab saum toj no, tib neeg cov tawv nqaij puas ci hauv qhov tsaus ntuj?
Cov tib neeg lub cev lus ci ntsa iab , emitting ib tug pom lub teeb nyob rau hauv tsis tshua muaj heev me me ntawm theem uas nce thiab poob nrog rau hnub, cov kws tshawb fawb tam sim no qhia. Cov kev tshawb fawb yav dhau los tau pom tias lub cev tawm lub teeb pom kev, 1,000 lub sij hawm qis dua li cov qib uas peb qhov muag liab qab yog qhov nkag siab.
Puas yog lub hnub ci ci ci hauv qhov tsaus ntuj?
Cov khoom yuav tsum yog raug nqi nyob rau hauv ncaj qha hnub ci los yog teeb pom kev zoo rau 2-3 teev rau qhov siab tshaj plaws ci ntsa iab . Rau qhov zoo ci ntsa iab , nqi nyob rau hauv lub teeb ncaj qha.
Pom zoo:
Yuav ua li cas cov txheej txheem ntawm cell faib nyob rau hauv eukaryotes feem ntau zoo ib yam li cell faib nyob rau hauv prokaryotes?
Tsis zoo li eukaryotes, prokaryotes (uas suav nrog cov kab mob) tau txais ib hom kev faib cell hu ua binary fission. Hauv qee qhov, cov txheej txheem no zoo ib yam li mitosis; Nws yuav tsum tau rov ua dua ntawm cov cell chromosomes, cais ntawm cov theej DNA, thiab kev sib cais ntawm niam txiv cell cytoplasm
Vim li cas cov hnub ci pom kev tsaus ntuj hauv cov duab ntawm lub hnub?
Tag nrho cov nyob rau hauv tag nrho cov, sunspots tshwm tsaus nti vim hais tias cov yog darker tshaj qhov chaw nyob ib ncig ntawm. Lawv tsaus dua vim lawv txias dua, thiab lawv txias dua vim muaj cov hlau nplaum sib nqus hauv lawv
Lub ntsiab lus twg yog pom nyob rau hauv qhov tsuas yog nyob rau hauv tebchaw quizlet?
Halogens yeej ib txwm pom nyob rau hauv cov xwm txheej incompounds vim hais tias halogens yog heev reactivenonmetals
Puas yog cov ntsiab lus uas muaj cov tshuaj lom neeg zoo sib xws yuav pom nyob rau tib lub sijhawm lossis hauv tib pab pawg piav qhia koj cov lus teb?
Qhov no yog vim hais tias cov tshuaj muaj zog nyob ntawm tsis muaj valence electrons. Raws li nyob rau hauv ib pawg tag nrho cov ntsiab lus muaj tib yam tsis muaj valence electron uas yog vim li cas lawv muaj cov tshuaj zoo sib xws tab sis nyob rau hauv ib lub sij hawm tsis muaj valence electron sib txawv uas yog vim li cas lawv txawv nyob rau hauv chemical zog
Dab tsi yog qhov teeb meem ntawm lub teeb nyob rau hauv lub ntuj hmo ntuj hu ua?
Gegenschein, tseem hu ua Counterglow, oval thaj ntawm faint luminosity raws nraim rau lub hnub nyob rau hauv lub hmo ntuj. Lub thaj ntawm lub teeb yog li faint nws tuaj yeem pom tsuas yog thaum tsis muaj lub hli, nyob deb ntawm lub nroog teeb, thiab nrog lub qhov muag yoog rau qhov tsaus ntuj