Njengoba isidingo seeukungezwani komzimbasukulondolozasisihlahlalukukhanya Njengoba kuqhubeka nokukhula, ukulinganiswa kwama-lumens kudlala indima ebalulekile ekuhloleni ukusebenza kahle kwezixazululo zokukhanyisa ezinobungani nemvelo. Ngokuqhathanisa umphumela we-lumen wezibani zendabuko ze-incandescent nowezinye izindlela zesimanje ze-LED noma ze-CFL, izinhlangano kanye nabenzi bezinqumo bangenza izinqumo ezinolwazi zokunciphisa ukusetshenziswa kwamandla nokunciphisa umthelela emvelweni.
Njengoba sonke sazi, njengoba ubuchwepheshe buqhubeka nokuthuthuka, ukusebenza komkhiqizo kuzothuthuka kancane kancane. Kodwa-ke, ngokuthuthuka okukhulayo kwe-inthanethi, imikhiqizo iyaxutshwa, futhi idatha engamanga yenza abantu bamangale. Konke lokhu kwenza kube nzima ngathi ukukhetha imikhiqizo ehlangabezana nezidingo zethu. Iningi lamakhasimende ami alicaci kahle ngomqondo wama-lumen futhi lihlala lingibuza ukuthi kukhona yini izibani ezinama-lumen ayi-10,000 noma ama-lumen angaphezu kuka-10,000. Kuhlanganiswe nalo mphumela, ukuze amakhasimende abe nomqondo ocacile wama-lumen.
Okokuqala, ama-lumens (avezwa njenge-lm) amelela inani eliphelele lokukhanya okubonakalayo okukhishwa umthombo wokukhanya ngeyunithi ngayinye. Ngokwesimo se-layman, kumayelana nokukhanya kwesibani. Ngokungafani nama-watts, alinganisa amandla asetshenziswa yibhalbhu, ama-lumens alinganisa ngqo ukukhanya kokukhanya okukhiqizwayo. Lo mehluko ubalulekile ngoba uvumela abathengi ukuthi benze izinqumo ezicacile lapho bekhetha imikhiqizo yokukhanyisa, beqinisekisa ukuthi bakhetha ukukhanya okulungile ngezidingo zabo ezithile.
Umqondo we-lumens usekelwe ku-photometry, isayensi egxile ekulinganiseni ukukhanya okubonakalayo okubonwa yiso lomuntu. Ngokuhlolwa okuqinile kwesayensi nokuhlaziya, abacwaningi basungule izindlela ezijwayelekile zokunquma ngokunembile ukuphuma kwe-lumen kwemithombo ehlukahlukene yokukhanya. Le ndlela yesayensi iqinisekisa ukuvumelana nokuthembeka kokulinganiswa kwe-lumen, inikeza abathengi isisekelo esithembekile sokuqhathanisa imikhiqizo ehlukene yokukhanya.
Kodwa ama-lumen nawo anemikhawulo ethile yokusetshenziswa. Eqinisweni, emakethe yanamuhla, abantu bahlala bebona ama-flashlight aphawulwe ngama-lumen ayi-10,000 noma amakhulu ezinkulungwane zama-lumen. Kodwa empeleni, kunzima ngama-flashlight ukufinyelela leli zinga lama-lumen, ingasaphathwa eyokuligcina. Ngisho noma kunezinga eliphezulu kangaka, njenge-lumen eziyi-10,000, ubude balo obuphezulu bungaba umzuzwana owodwa, futhi lapho umsebenzisi evula iswishi, kungcono ukuvala amehlo akho, ngoba lokhu kukhanya kuzolimaza amehlo akho. Uma kufinyelela umzuzwana owodwa, ukukhanya kwe uI-Ltrabkwesokudlafisibani selasheizoncipha kancane kancane ngokuhamba kwesikhathi, kanti ezinye zizoncipha kakhulu. Uma ithoshi lifuna ukusetshenziswa njalo kuma-lumens ayi-10,000, ukupakishwa kwalo kwangaphandle kuzoshisa, futhi ngokubekezelelana kwesikhumba somuntu, akunakwenzeka ukulibamba futhi kuzozilimaza. Futhi ubuchwepheshe bamanje abukwazi ukuhlangabezana nale mfuneko. Uma ukhanyisa ama-lumens ayi-10,000 ephepheni, iphepha lizovutha ngqo ngemva kwemizuzu embalwa.
Kodwa kukhona nezinto ezifinyelela amashumi ezinkulungwane zama-lumens, njengehighpobolekiwewumsebenzilizibani, futhisilangapobolekiweli-amp, kodwa akubona bonke abangafinyelela lokho. Uma ufuna ithoshi ligcine inani elithile lokukhanya njalo, kusuka ku-500LM kuya ku-1000LM empeleni kuyisinqumo esihle. Futhi ukukhanya kulolu hlu sekuvele kukhanya kakhulu. Uma usebenzisa ithoshi, ukupakishwa kwalo kwangaphandle kuzoshisa kancane, kodwa umzimba womuntu awukwazi ukukuzwa. Ithoshi liyashisa ngoba ukusetshenziswa kwalo okuqhubekayo kokukhanya okuphezulu kuzobangela ukuthi ukushisa kuqongeleleke futhi kuqhubeke nokusabalala kuthoshi. Ngokombono osebenzayo, ukuqonda ama-lumen kubalulekile ekukhetheni ikhambi lokukhanyisa elihlangabezana nezidingo ezithile. Isibonelo, lapho ukhetha isibani segumbi lokuphumula, abantu bangabhekisela esilinganisweni se-lumen ukuze bahlulele izinga lokukhanya elifanelana kahle nesikhala. Ngokufanayo, ezindaweni zangaphandle njengengadi noma izindlela, umphumela we-lumen wesilangali-andscapelukukhanyisakungacatshangelwa ngokucophelela ukuze kufezwe ukukhanya okufiswayo. Ngokufaka umqondo wama-lumens enkambisweni yokwenza izinqumo, abantu bangenza ngcono ukukhetha kokukhanya ukuze kusebenze kahle futhi kusetshenziswe kahle amandla.
Isikhathi sokuthunyelwe: Julayi-11-2024