Khanya metering: Theory le Itloaetseng

Khanya - ena boholo ba 'mele, tšoauoa ka e karo-karolelano ea leseli ts'ebetsong ketsahalo holim'a sebakeng lona. Ha o ntse o ne a utloisisa hore holim sefofane e lokela ho ba perpendicular ho selekane leseli la phallo.

Ntle ho melao ea boitšoaro le ea bohloeki ka ho toba ho batho haholo khanya go lekanya sebelisoa ka husbandry phoofolo ho bōpa e loketseng microclimate Ntlafatso, ho ho ikatisa aquarium litlhapi le limela bakeng sa ho lema dimela potted, ho hlalosa litšobotsi tsa thepa ea lifoto 'me tsa video, ho akarelletsa le video khamera leihlo.

mehloli ea khanya

E o tsejoa hore ho na le mokhoa oa tlhaho le maiketsetso mabone. E baka e loketseng ho khanya mehloli: e bua ka tlhaho khanya ambient tsa leholimo, ya e le hantle, letsatsi le khanya a bonahatsa ea khoeli. mehloli maiketsetso - mabone fapaneng (mabone litleloubu, lero mabone, fluorescent), e hlahang lifiliming TV le lik'homphieutha.

Ke hobane'ng ha re lokela ho lekanya illuminance

Lighting - e mong oa litsupa bophelo bohlokoa ka ho fetisisa, e leng itšetlehile ka ho toba ka bophelo ba batho. khanya ea ho lekanya - Tsamaiso e kenyelelitsoe SanPin (melao ea tsamaiso bohloeki le ditlwaelo), ka hloko entsoeng ka par, mosebetsing le litekanyo tsa maemo la lerata, thothometsa, lerōle le ho silafatsoa khase.

Lingaka li re hore ho haella ha fana ka kgaso akarelletsa fokotsa ho acuity bonwang, mokhathala, fokotswa mahloriso le kakaretso tlhahiso ka 'na ka etsa hore le kotsi. Khaello liphoofolo le linonyana khanya e etsa hore mafu a kgolo ya ho ntshetsa pele a mpe sete ya boima ba 'mele, ho lahleheloa ke tlhahiso (bakeng sa liphoofolo tsa polasing) le bokhoni ba ho ikatisa.

Kamoo le ka seo diyuniti e lekanngoa, palo ena 'meleng

Khanya metering sesebediswa se entseng, e leng o bitsoa mitha leseli, e nkehang habobebe sesebelisoa eo ke mofuta oa photometer ka. Morao-rao liselefouno phahameng-qetellong li ne li akarelletsa filter. Unit khanya go lekanya tsamaisong ea machaba ea diyuniti (SI) - suite e, e leng karo-karolelano ea mitha lisekoere 1 ho lumen sebakeng feela. The lumens lekanya khanya ts'ebetsong chelete. Litsamaiso American le British hira joalo lekanya unit trust lekanya illuminance ka lumens ka maoto lisekoere, maoto-candela (tekanyo ea ho khanya ho tloha leseli mohloding matla a 1 candela, aroloa ka 1 maoto ho tloha holimo).

Kamoo ke ea ka tekanyo khanya? Sena se etsoa sebedisa mitha leseli, mitha e lokela ho ba ho qetela ba maemong a tshekaletseng, beha e ka ntlha lakatsa ea kamoreng. Bakeng sa meaho le mehaho ea liphoofolo tse ruiloeng, ho na le khethehileng e balletsweng ke melao-motheo ea puso mehato taolo. Sebelisa thupelo ea ho sesebediswa ha ho sebelisa nozzle lokela ho hopolwa attenuation Ntho e ke eo lebaka e eketseha. Ka mor'a moo, mekhoa e sa tšoaneng ba balwa bonyane, kakaretso, palo e kahodimodimo khanya, hammoho le karo-karolelano ea khanya ea tlhaho.