Video: Dab tsi yog qhov kev siv ntawm lub nqaj?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Beam siv zog . Beam siv yog txhais raws li cov khoom ntawm qhov ntau thiab zoo ntawm cov nqaj thaum raug txheeb ze rau ib cheeb tsam. Yog li ntawd, lub kev siv lub teeb yog cuam tshuam los ntawm nqaj zoo (kVp) as well as nqaj Qhov ntau (mAs).
Kuj tseem paub yog, ua li cas koj pom qhov siv ntawm lub teeb laser?
Nrov teb (1) Rau ib tug mem tes laser ; Lub zog yuav yog Zog / mem tes dav. Koj ua tau xam tus naj npawb ntawm photons siv qhov sib txheeb: n = (E x Laser Wavelength)/(hc) uas tig tawm mus txog 2x10^17 rau 100 mJ laser zog 500nm laser wavelength.
Ib yam li ntawd, unit of intensity yog dab tsi? Kev siv zog yog lub hom phiaj ntsuas ntawm lub sij hawm nruab nrab lub zog ceev ntawm nthwv dej ntawm ib qho chaw tshwj xeeb. The SI unit ntawm kev siv zog yog watt ib square meter.
Tsis tas li ntawd, kev siv hluav taws xob yog dab tsi?
Kev siv zog yog ib qho kev ntsuas ntawm cov hluav taws xob tsim tawm. Ntau yam cuam tshuam rau qhov zoo thiab kev siv zog ntawm beam. kV - qhov ntau dua qhov sib txawv ntawm lub raj, qhov ceev ntawm cov electrons txav thiab siab dua lub zog ntawm lub raj. X-Ray photons.
Cov mis rau lub teeb siv yog dab tsi?
Nyob rau hauv high-energy txwv, photons ua ntau zoo li hais dua nthwv dej. Cov kev siv zog txhais tau tias yog lub zog ntawm ib cheeb tsam, thiab lub zog yog txhais raws li lub zog ib lub sijhawm. Yog li: I = PA = EΔt1A.
Pom zoo:
Dab tsi yog qhov txawv ntawm qhov sib txawv ntawm qhov sib txawv thiab qhov sib txawv ntawm qhov ntab?
Integers thiab floats yog ob yam sib txawv ntawm cov ntaub ntawv tus lej. Ib tus lej (feem ntau hu ua anint) yog tus lej tsis muaj tus lej lej. Float isa floating-point number, uas txhais tau hais tias nws yog tus lej uas muaj tus lej lej. Floats siv thaum xav tau ntau dua
Dab tsi yog qhov kev sib raug zoo ntawm kev ua lej ntawm qhov kev nyuaj siab khov kho thiab Mollality?
Kev nyuaj siab qhov chaw khov kho yog cov cuab yeej sib koom ua ke pom hauv cov kev daws teeb meem uas tshwm sim los ntawm kev qhia txog cov kuab tshuaj molecules rau cov kuab tshuaj. Cov ntsiab lus khov ntawm cov kev daws yog tag nrho qis dua li cov kuab tshuaj ntshiab thiab yog ncaj qha proportional rau molality ntawm cov kuab tshuaj
Dab tsi yog qhov yuam kev loj tshaj plaws yog tias Irina ntsuas qhov ntev ntawm nws lub qhov rais li 3.35 feet qhov yuam kev loj tshaj plaws yog taw?
Kev daws: Qhov yuam kev loj tshaj plaws hauv kev ntsuas ntsuas tau txhais tias yog ib nrab ntawm qhov ntsuas ntsuas
Dab tsi yog qhov flux los ntawm lub voos xwmfab ntawm sab yog tias tus nqi ntawm Q yog ntawm ib qho ntawm nws lub ces kaum?
Raws li peb paub tias, tag nrho cov flux los ntawm tus nqi q yog q / ε 0 (Gauss txoj cai). Yog hais tias tus nqi yog nyob rau ntawm lub ces kaum ntawm lub voos xwmfab, ib co ntawm cov flux nkag mus rau hauv lub voos xwmfab thiab tawm los ntawm ib co ntawm nws lub ntsej muag. Tab sis qee qhov flux tsis nkag mus rau hauv lub voos xwmfab. Qhov 1/8th no yuav muab faib ua 3 ntu dua
Dab tsi yog qhov txawv ntawm instantaneous thiab nruab nrab ceev dab tsi yog qhov piv txwv loj tshaj ntawm kev ceev ceev?
Qhov nruab nrab ceev yog qhov ceev nruab nrab ntawm lub sijhawm. Instantaneous ceev yuav yog qhov ceev txhua qhov muab tam sim ntawd hauv lub sijhawm ntawd, ntsuas nrog lub ntsuas ntsuas lub sijhawm