Njengesidingo seeukungezwanisi-avingsisihlahlalubusuku iyaqhubeka ikhula, ukukalwa kwe-lumens kudlala indima ebalulekile ekuhloleni ukusebenza kwezixazululo zokukhanyisa ezihambisana nemvelo. Ngokuqhathanisa ukuphuma kwe-lumen kwamalambu endabuko e-incandescent nalokho okuhlukile kwe-LED noma i-CFL yesimanje, izinhlangano nabathatha izinqumo bangenza izinqumo ezinolwazi ukuze banciphise ukusetshenziswa kwamandla futhi banciphise umthelela wendawo.
Njengoba sonke sazi, njengoba ubuchwepheshe buqhubeka buthuthuka, ukusebenza komkhiqizo kuzothuthuka kancane kancane. Kodwa-ke, ngokuthuthuka kwe-inthanethi, imikhiqizo iyaxutshwa, futhi idatha engamanga yenza abantu bamangale. Konke lokhu kwenza kube nzima ngathi ukukhetha imikhiqizo ehlangabezana nezidingo zethu. Amakhasimende ami amaningi awacacile ngomqondo we-lumens futhi ahlala engibuza ukuthi akhona yini amalambu ane-lumens ayi-10,000 noma ngaphezulu kwezi-10,000. Kuhlanganiswe nalo mphumela, ukuze wenze amakhasimende abe nomqondo ocacile we-lumens.
Okokuqala, ama-lumens (okuchazwa ngokuthi lm) amelela inani eliphelele lokukhanya okubonakalayo okukhishwa umthombo wokukhanya ngesikhathi seyunithi ngayinye. Ngokwabantu abavamile, imayelana nokukhanya kwesibani. Ngokungafani nama-watts, akala amandla asetshenziswa isibani, ama-lumens alinganisela ngokuqondile ukukhanya kokukhanya okukhiqizwayo. Lo mehluko ubalulekile ngoba uvumela abathengi ukuthi benze izinqumo ezicacile lapho bekhetha imikhiqizo yokukhanyisa, baqinisekise ukuthi bakhetha ukukhanya okulungile kwezidingo zabo ezithile.
Umqondo we-lumens usekelwe ku-photometry, isayensi egxile ekulinganiseni ukukhanya okubonakalayo okubonwa iso lomuntu. Ngokuhlola nokuhlaziya okuqinile kwesayensi, abacwaningi baye basungula izindlela ezimisiwe zokunquma ngokunembile ukuphuma kwe-lumen yemithombo yokukhanya ehlukahlukene. Le ndlela yesayensi iqinisekisa ukuvumelana nokuthembeka kokulinganisa kwe-lumen, ukuhlinzeka abathengi ngesisekelo esithembekile sokuqhathanisa imikhiqizo ehlukene yokukhanyisa.
Kodwa ama-lumens nawo anemikhawulo ethile yokusetshenziswa. Eqinisweni, ezimakethe zanamuhla, abantu bahlala bebona amathoshi amakwe ngamalumens ayi-10,000 noma amakhulu ezinkulungwane zamalumens. Kodwa empeleni, kunzima ukuthi amathoshi afinyelele kuleli zinga le-lumens, ingasaphathwa eyokuligcina. Ngisho noma kunamazinga aphezulu anjalo, njengama-lumens angu-10,000, ubude bawo obukhulu bumayelana nomzuzwana owodwa, futhi lapho umsebenzisi evula inkinobho, kungcono ukuvala amehlo akho, ngoba lokhu kukhanya kuzolimaza amehlo akho. Lapho ifinyelela umzuzwana owodwa, ukukhanya kwe- uokunyebkwesokudlafi-lashlightizokwehla kancane kancane ngokuhamba kwesikhathi, futhi ezinye zizokwehla kakhulu. Uma i-flashlight ifuna ukusetshenziswa ngokuqhubekayo kuma-lumens angu-10,000, ukupakishwa kwayo kwangaphandle kuzoshisa, futhi ngokubekezelelana kwesikhumba somuntu, akunakwenzeka ukuyibamba futhi uzozilimaza. Futhi ubuchwepheshe obukhona manje abukwazi ukuhlangabezana nale mfuneko. Uma ukhanyisa ama-lumens angu-10,000 okukhanya ephepheni, iphepha lizovutha ngokuqondile ngemva kwemizuzu embalwa.
Kodwa kukhona nezinto ezifinyelela emashumini ezinkulungwane zama-lumens, njengehighpukweletawnomalukukhanya, futhisolarpukweletalamp, kodwa akubona bonke abakwazi ukufinyelela lokho. Uma ufuna ithoshi lilondoloze inani elithile lokukhanya ngokuqhubekayo, i-500LM kuya ku-1000LM empeleni iyisinqumo esihle. Futhi ukukhanya kulobu bubanzi sekuvele kukhanya kakhulu. Uma usebenzisa ithoshi, ukupakishwa kwalo kwangaphandle kuzoshisa kancane, kodwa umzimba womuntu awukuzwa. Ithoshi liyashisa ngoba ukusetshenziswa kwalo okuqhubekayo kokukhanya okuphezulu kuzodala ukushisa kunqwabelene futhi kuqhubeke ukusabalala ku-flashlight. Ngokombono osebenzayo, ukuqonda ama-lumens kubalulekile ekukhetheni isisombululo sokukhanyisa esihlangabezana nezidingo ezithile. Isibonelo, lapho ukhetha isibani segumbi lokuphumula, abantu bangabhekisela esilinganisweni se-lumen ukuze bahlulele izinga lokukhanya elisifanela kangcono isikhala. Ngokufanayo, ezindaweni ezingaphandle njengezingadi noma izindlela, ukuphuma kwe-lumensolarlandscapelukukhanyaingacatshangelwa ngokucophelela ukuze kuzuzwe ukukhanya okufunayo. Ngokufaka umqondo wama-lumens enqubweni yokuthatha izinqumo, abantu bangathuthukisa ukukhetha kokukhanyisa ukuze kusebenze kanye nokonga kwamandla.
Isikhathi sokuthumela: Jul-11-2024