Ngaba uyayiqonda “i-lumen” ekufuneka isibane siyazi?

Ekuthengweni kwengaphandleintlokoizibanekwayeukukhempishaIzibane zihlala zibona igama elithi “lumen”, ngaba uyaliqonda?

IiLumens = Ukuphuma kokukhanya. Ngamazwi alula, iiLumens (ezichazwa yi-lm) ziyindlela yokulinganisa inani lilonke lokukhanya okubonakalayo (kwiliso lomntu) okuvela kwisibane okanye kumthombo wokukhanya.

Okuninziindawo eqhelekileyo yangaphandleukukhempishaukukhanya, isibane sentloko okanye ilaphuIzixhobo zezibane ze-LED, ezisebenzisa amandla amancinci kwaye ngenxa yoko zine-watt-rating ephantsi. Oku kwenza ii-watts esasizisebenzisa ukulinganisa ukukhanya kwebhalbhu yesibane zingasasebenzi, ngoko ke abavelisi batshintshela kwi-lumens.

I-Lumen, iyunithi ebonakalayo echaza ukuhamba kokukhanya, ilinganiswa ngo-“lm”, isishunqulelo se-“lumen”. Okukhona ixabiso le-lumen liphezulu, kokukhona ibhalbhu ikhanya ngakumbi. Ukuba awuqinisekanga ngamanani e-lumen, le tshati yezibane ze-incandescent ukuya kwi-LED inokukunika ingcaciso. Oko kukuthi, xa ufuna i-LED enokufezekisa isiphumo sesibane se-incandescent se-100W, khetha i-LED ye-16-20W kwaye uya kufumana ukukhanya okufanayo.

Ngaphandle, ngokweentlobo ezahlukeneyo zemisebenzi ngokubanzi kufuneka amanqanaba ahlukeneyo e-lumen, ungabhekisa kule datha ilandelayo: ukukhempisha ebusuku: malunga ne-lumen ezili-100 ukuhamba intaba ebusuku, ukunqumla (ukuqwalasela utshintsho lwemozulu olufana nemvula kunye nenkungu): 200~500 i-lumen malunga nokubaleka kwindlela okanye eminye imidyarho yasebusuku: 500~1000 i-lumen yobuchwephesha yokukhangela nokusindisa ebusuku: ngaphezulu kwe-lumen ezili-1000

Lumka xa usebenzisaizibane zezibane zangaphandle(ingakumbi abo bane-lumens ephezulu), musa ukubakhomba emehlweni abantu. Ukukhanya okugqamileyo kakhulu kunokubangela umonakalo emehlweni abantu.