2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Lub SI chav nyob ntawm qhov tawm ntawm qhov hluav taws xob yog qhov watt ib square meter (W/m 2) , thaum lub spectral tawm hauv zaus yog watt ib square meter ib hertz (W·m−2·Hz− 1) thiab cov spectral tawm hauv wavelength yog watt ib square meter ib 'meter' (W·m−3 )-feem ntau cov watt ib square meter ib nanometer (W·m−2·nm− 1).
Yuav ua li cas yog tus qauv ntawm radiant flux?
W=J/s . M⋅L2⋅T-3. Radiant zog emissions, reflected, kis los yog tau txais, ib chav tsev lub sij hawm. Qhov no qee zaum kuj hu ua "radiant power". Spectral flux.
Koj suav li cas radiant flux ceev?
Qhov ntom rau qhov tshwm sim flux ntawm qhov chaw hu ua Irradiance. Qhov ntom rau flux tawm ntawm qhov chaw hu ua Emittance lossis Exitance. 500 deg K Page 6 CE 603 Photogrammetry II Hloov cov units ntawm S(λ) los ntawm kev sib npaug ntawm 1E-06, hloov mus rau spectral exitance, M(λ) los ntawm kev sib npaug ntawm pi.
Dab tsi yog qhov tawm ntawm lub teeb ci laser?
Radiant tawm (los yog emittance) yog ib lub sij hawm ntawm radiometry thiab yog txhais raws li lub radiant flux (optical zog=lub zog ib lub sij hawm) uas yog emissions los ntawm tej nto (xws li. ntawm lub teeb ci) ib cheeb tsam.
Kev siv zog ntawm lub zog hluav taws xob yog dab tsi?
Nyob hauv radiometry, radiant siv yog theradiant flux emitted, reflected, kis los yog tau txais, ib unit khoom lub kaum sab xis, thiab spectral siv yog lub radiant siv ib unit zaus los yog wavelength, nyob ntawm seb lub spectrum yog npaum li cas los ntawm ntau zaus los yog wavelength.
Pom zoo:
Yuav ua li cas txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau pom kev pom?
Txawm li cas los xij, corneal collagen cross-linking - cov txheej txheem qib siab tau pom zoo los ntawm US Food and Drug Administration (FDA) hauv xyoo 2016 - tuaj yeem txhim kho qhov pom kev hauv cov neeg mob txhua hnub nyoog. Corneal collagen cross-linking (CXL) tsis yog kho rau keratoconus, tab sis nws tuaj yeem pab tiv thaiv tus mob kom tsis txhob mob hnyav.
Koj puas tuaj yeem foob rau kev tawm tsam kev tawm tsam?
Txoj xov zoo rau cov neeg xauj tsev feem ntau yog kev tawm tsam tus tswv tsev yog txhaum cai hauv ntau lub xeev-cov tswv tsev uas koom nrog nws tuaj yeem nres thiab / lossis foob, qee zaum kom tau nyiaj ntau. Yuav ua li cas txiav txim siab tawm tsam kev tawm tsam?
Puas nivea txawm thiab radiant darken ntawm daim tawv nqaij?
NIVEA qhov txiaj ntsig zoo SPF 15 pab tiv thaiv koj cov tawv nqaij los ntawm kev phom sij ntawm UVA / UVB rays uas ua rau tawv nqaij tawv thiab kev puas tsuaj thaum lub sijhawm. … Puas Nivea txawm thiab radiant zoo rau cov tawv nqaij tsaus?
Nyob rau hauv qhov kev txiav txim siab yog qhov kev sib tw yog kev tawm tsam kev tawm tsam?
Lub Ntiaj Teb Beat paub txog nws tsis lees paub cov khoom siv thiab cov qauv niaj hnub, kev sim tshuaj, thiab kev ywj pheej ntawm sab ntsuj plig thiab kev sib deev. Nws hloov zuj zus nyob rau xyoo 1960 los ua ib feem ntawm hippie thiab loj dua counterculture txav.
Qhov twg yog qhov kev txiav txim siab rau kev tsis lees paub thiab rau kev ua kom muaj kev tawm tsam ntawm kev tawm tsam?
Kev qhuab ntuas tau siv los ntawm cov thawj coj loj hauv cov tub rog Romanrau txim rau cov koom haum lossis pab pawg loj ua txhaum cai, xws li kev ua phem, kev tawm tsam, kev tawm tsam, thiab kev tsis ncaj ncees, thiab rau lub pacification ntawm rebellious legions.
