Kev hloov pauv ntawm cov duab thaij duab uas suav nrog tib neeg lub cev lub cev thiab cov kab hluav taws xob ncaj nraim yog muab los ntawm cov hauv qab no : (photometric unit)=(radiometric unit) x (683) x V () qhov twg V() yog 'Photopic Teb,' qhia ua ntej thiab qhia peb tias qhov muag tau txais txiaj ntsig li cas…
Dab tsi yog qhov txawv ntawm radiometry thiab photometry?
Qhov txawv ntawm radiometry thiab photometry yog qhov radiometry suav nrog tag nrho cov hluav taws xob kho qhov muag (thiab feem ntau suav nrog kev ntsuas ntsuas qhov ntsuas), thaum photometry cuam tshuam nrog qhov pom spectrum hnyav los ntawm cov lus teb. ntawm qhov muag.
Yuav ua li cas koj hloov radiant siv rau irradiance?
Ntawm qhov deb d los ntawm ib qhov chaw nrog radiant siv kuv, ib cheeb tsam cheeb tsam nrog nws ib txwm kev taw qhia ntawm lub kaum sab xis θ tiv thaiv kev taw qhia mus rau qhov chaw tau txais ib qho irradiance E=I cos θ / d 2.
Lub teeb piav qhia radiometry thiab photometry yog dab tsi?
Radiometry yog kev tshawb fawb ntawm kev ntsuas lub teeb nyob rau hauv ib feem ntawm cov electromagnetic spectrum … Irradiance yog qhov siv ntawm lub teeb thiab ntsuas hauv watts ib square meter. Photometry yog dab tsi? Photometry yog kev tshawb fawb ntawm kev ntsuas pom lub teeb nyob rau hauv cov chav uas hnyav raws li qhov rhiab heev ntawm tib neeg lub qhov muag.
plaub qhov loj photometric yog dab tsi?
Photometry muaj plaub lub tswv yim, uas yog luminous flux, luminous siv, illuminance, thiab luminance.