Luminance vs Illuminance
Luminance thiab illuminance yog ob lub ntsiab lus tseem ceeb uas tau tham hauv physics. Luminance yog tus nqi ntawm lub teeb lub zog uas yog tsim los ntawm ib tug nto los yog ib yam khoom. Illuminance yog tus nqi ntawm lub teeb lub zog teeb meem ntawm ib qho chaw. Lub ntsiab lus ntawm luminance thiab illuminance yog dav siv nyob rau hauv kev lag luam xws li physics, photography, chemistry, engineering, astronomy, astrophysics thiab ntau lwm yam. Nyob rau hauv tsab xov xwm no, peb yuav tham txog dab tsi luminance thiab illuminance yog dab tsi, lub ntsiab lus ntawm luminance thiab illuminance, units ntawm kev ntsuas siv nyob rau hauv ntsuas luminance thiab illuminance, lawv daim ntawv thov, thiab thaum kawg kev sib piv ntawm luminance thiab illuminance. Qhov sib txawv ntawm luminance thiab illuminance yog cov ntsiab lus ntawm qhov kawg.
Luminance yog dab tsi?
Luminance yog ib lub tswv yim uas tau siv dav hauv physics. Luminance yog tus nqi ntawm lub teeb pom los ntawm ib tug tib neeg lub qhov muag tawm los ntawm ib tug tiaj tus. Luminance yog qhov luminous siv nyob rau hauv ib cheeb tsam ntawm lub teeb mus rau hauv ib qho kev taw qhia. Lub luminance ntsuas ntau npaum li cas lub zog luminous yuav pom los ntawm qhov nruab nrab tib neeg lub qhov muag los ntawm ib lub kaum ntse ntse.
Chav tsev SI rau ntsuas luminance yog candela ib square meter, uas yog denoted li cd / m2. CGS chav ntsuas ntsuas luminance yog hu ua stilb uas yog sib npaug rau candela ib square centimeter. Chav tsev SI kuj sib npaug rau ib “nit”.
Luminance yog ib qho khoom tseem ceeb hauv kev yees duab vim nws piav qhia txog lub teeb uas yuav siv rau hauv kev tsim duab. Lub input luminance ntawm lub zoo tagnrho optical system yog sib npaug zos rau cov zis luminance ntawm lub system. Nyob rau hauv ib qho kev ua tau zoo, qhov tso zis luminance yog ib txwm me dua qhov input luminance. Daim duab tsis tuaj yeem ci ntau dua li qhov nws tus kheej.
Luminance feem ntau yuam kev rau luminosity thiab illuminance vim hais lus zoo sib xws, tab sis peb cov no yog tag nrho ntawm ib leeg.
Illuminance yog dab tsi?
Illuminance yog ib lo lus uas feem ntau txhais yuam kev li luminance lossis luminosity. Illuminance ntsuas qhov teeb meem ntawm lub teeb ntawm ib qho chaw. Nyob rau hauv lwm yam lus, illuminance ntsuas tus nqi ntawm lub teeb illuminating saum npoo. Qhov no yog hnyav los ntawm lub wavelength, los them rau qhov rhiab heev ntawm tib neeg lub qhov muag. Illuminance txhais tau tias yog tag nrho cov teeb meem luminance flux ntawm qhov chaw muab rau ib cheeb tsam.
Illuminance yog ntsuas hauv lux lossis lumens ib square meter. SI unit of illuminance is cd.sr.m-2.
Illuminance yog siv dav hauv kev yees duab los ntsuas lub teeb ci ntsa iab ntawm qhov chaw thaij duab. Lub teeb pom kev ntau dhau yuav ntxuav tawm tag nrho cov ntsiab lus ntawm qhov chaw thaum lub teeb pom kev me me yuav nyuaj rau pom.
Qhov txawv ntawm luminance thiab Illuminance yog dab tsi?
• Luminance yog ib qhov ntau uas txheeb xyuas qhov ntau npaum li cas ntawm lub teeb tawm ntawm qhov chaw whereas illuminance yog qhov ntau uas qhia lub teeb ci ntsa iab saum npoo.
• Luminance nyob ntawm qhov xwm thiab cov khoom ntawm qhov chaw whereas illuminance ntawm ib qhov chaw tsis nyob ntawm qhov xwm ntawm qhov chaw.
