Cov txheej txheem:
Video: Dab tsi ua rau muaj kev tawm tsam nuclear?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Nuclear tshuaj tiv thaiv . Hauv nuclear physics, ib cov tshuaj tiv thaiv nuclear yog ib txoj kev uas ob nuclei los yog nuclear particles sib tsoo, tsim cov khoom sib txawv dua li cov khoom pib. Hauv paus ntsiab lus a tshuaj tiv thaiv tuaj yeem koom nrog ntau tshaj ob qhov sib tsoo, tab sis qhov xwm txheej zoo li no tsis tshua muaj.
Tib neeg kuj nug, ua li cas cov tshuaj tiv thaiv nuclear tshwm sim?
A cov tshuaj tiv thaiv nuclear yog ntawm nws qhov yooj yim tshaj plaws tsis muaj dab tsi ntau tshaj li ib tshuaj tiv thaiv txheej txheem uas tshwm sim hauv ib atomic nucleus. Lawv feem ntau coj qhov chaw thaum lub nucleus ntawm ib lub atom tau smacked los ntawm ib tug subatomic particle (feem ntau yog ib tug "dawb neutron," ib tug luv luv-nyob neutron tsis khi rau ib tug uas twb muaj lawm nucleus) los yog lwm yam nucleus.
Tom qab ntawd, lo lus nug yog, yuav ua li cas koj nres qhov kev tawm tsam nuclear? Rau ib nuclear reactor , cov tshuaj tiv thaiv ib txwm nres Thaum cov neeg ua haujlwm ntxig neutron absorbing tswj rods rau hauv reactor . Qhov no tshem tawm cov neutrons txaus los ntawm cov saw hlau sib npaug tshuaj tiv thaiv yog li ntawd cov reactor ua subcritical. Tom qab accounting rau ncua neutrons, lub tshuaj tiv thaiv nres . Lub sijhawm.
Yog li ntawd, 4 hom kev tawm tsam nuclear yog dab tsi?
Plaub hom tshuaj tiv thaiv tseem ceeb uas yuav tau them rau hauv chav tsev no yog:
- Fission.
- fusion.
- Nuclear Decay.
- Kev hloov pauv.
Vim li cas loj poob rau hauv kev tawm tsam nuclear?
Qhov tseeb pawg yog ib txwm tsawg dua qhov sib npaug ntawm tus kheej cov khoom ntawm cov protons thiab neutrons vim lub zog raug tshem tawm thaum lub nucleus tsim. Qhov no pawg , lub npe hu ua pawg defect, yog ploj lawm nyob rau hauv lub resulting nucleus thiab sawv cev rau lub zog tso tawm thaum lub nucleus tsim.
Pom zoo:
Dab tsi yog qhov tseem ceeb ntawm kev tawm hauv cov crystal kev loj hlob tsis muaj kev cuam tshuam?
Nws yog ib qho tseem ceeb uas yuav tsum tau ua kom qhov kev sim npog kom tsis txhob muaj plua plav thiab lwm yam khoom siv tsis xav tau los ntawm kev cuam tshuam kev loj hlob siv lead ua. Saib xyuas kev tsim cov muaju ntawm cov hlua txhua hnub. Sab laug tsis muaj kev cuam tshuam, cov muaju yuav tsum loj dua txhua hnub kom txog thaum cov tshuaj qhuav qhuav
Nws txhais li cas hais tias peb txhua tus muaj qhov kev tawm tsam rau kev txawj ntse?
Hauv cov noob caj noob ces, cov tshuaj tiv thaiv kab mob (tseem hu ua ntau yam ntawm cov tshuaj tiv thaiv) yog thaum cov phenotype (cov yam ntxwv qhia) ntawm cov kab mob nyob ntawm ob qho tib si ntawm lub cev cov yam ntxwv ntawm caj ces (genotype) thiab ib puag ncig. Piv txwv li, ob tug nus muag tau tsa ua ke tuaj yeem muaj qhov sib txawv IQs thiab cov txuj ci ntuj
Cov anemones muaj cov yam ntxwv dab tsi uas tso cai rau lawv tawm tsam ib leeg?
Hom: A. elegantissima
Yuav tsum muaj zog dab tsi los tswj qhov ceev ntawm qhov khoom yog tias tsis muaj kev tawm tsam?
Yog tias tsis muaj kev tawm tsam ces tsis tas yuav tsum muaj lub zog los tswj qhov ceev ntawm cov khoom. Raws li Newton thawj txoj cai lij choj, lub cev nyob rau hauv cov lus tsa suab nyob twj ywm thiab lub cev atrest nyob twj ywm kom txog thaum thiab tshwj tsis yog ua raws li qee qhov kev quab yuam sab nraud
Cov tshuaj dab tsi tuaj yeem txav mus rau hauv lossis tawm ntawm cov hlwb los ntawm kev nthuav tawm?
Dej, carbon dioxide, thiab oxygen yog ib qho ntawm ob peb yam yooj yim molecules uas muaj peev xwm hla lub cell membrane los ntawm diffusion (los yog ib hom diffusion hu ua osmosis). Diffusion yog ib txoj hauv kev ntawm kev txav ntawm cov khoom nyob rau hauv cov hlwb, nrog rau txoj kev rau cov me me molecules tseem ceeb hla lub cell membrane