Light metering: Theory na Practice

Ìhè - a anụ ahụ ịdị ukwuu, ji ruru nke ìhè agbanwe oge merenụ n'elu ya ebe. Ọ na-ghọtara na n'elu ụgbọelu kwesịrị perpendicular ìhè axis nke eruba.

E wezụga ịdị ọcha ụkpụrụ ozugbo mmadụ n'ụzọ ìhè n'ihe eji na anụmanụ husbandry na-eke a kwesịrị ekwesị microclimate Improvement, na ozuzu akwarium azu na osisi maka cultivation nke potted osisi, na-akọwa àgwà nke foto na video ngwá, tinyere a video camera onyunyo.

isi mmalite nke ìhè

Ọ maara na e nwere a eke na mụọ ọkụ. Ọ na-emepụta ihe kwesịrị ekwesị ìhè isi mmalite: na-ezo aka eke ihere ìhè nke elu-igwe, nke N'ezie, anyanwụ na-egosipụta ìhè nke ọnwa. Ru isi mmalite - dị iche iche na oriọna (incandescent oriọna, orùrù oriọna, fluorescent), TV ákwà na kọmputa.

Gịnị mere anyị mkpa tụọ illuminance

Ọkụ - otu n'ime ihe ndị kasị mkpa ahụ ike na-egosi, nke na-adabere na na ụmụ mmadụ ike. ìhè n'ihe - usoro a gụnyere na SanPin (ịdị ọcha ụkpụrụ na norms), jiri nlezianya mere na ọrụ par na nha nke etoju nke mkpọtụ, vibration, ájá na gas ofufe.

Dọkịta na-ekwu na enweghị oti mkpuchi na gụnyere a gụnyere ya ná visual acuity, ike ọgwụgwụ, belata ịta na n'ozuzu arụpụtaghị pụrụ ọbụna ime ka ihe mberede. The ụmụ anụmanụ na nnụnụ ìhè erughi-akpata ibu ọrịa, mmepe nke a ọjọọ set nke uka nke ahụ, ọnwụ nke arụpụtaghị (maka anụmanụ) na ikike mụta nwa.

Olee na ihe nkeji tụrụ, anụ ahụ a buru ibu

Light metering ngwaọrụ a rụrụ, nke a na-akpọ ìhè mita, a obere ngwaọrụ nke bụ ụdị nke a photometer. Modern elu-ọgwụgwụ cell phones gụnyere nzacha. Unit ìhè n'ihe mba na mba usoro nke nkeji (SI) - ụlọ, nke bụ a ruru nke 1 square mita ka lumen n'elu ebe. The lumens tụrụ ìhè agbanwe oge ego. The American na British usoro eji ndị dị otú ahụ e ji atụ unit e ji atụ illuminance ka lumens kwa square ụkwụ, ụkwụ-candela (ogo ìhè si ìhè isi ike nke 1 candela, spaced 1 ụkwụ n'elu).

Olee otú bụ ìhè n'ihe? Nke a na-eme iji ìhè mita, mita ga-abụ onye ikpeazụ na a kehoraizin ọnọdụ, etinye ya na chọrọ ebe nke ụlọ. N'ihi na ụlọ na anụ ụlọ ụlọ ọrụ, e nwere ndị pụrụ iche kenyere ala ụkpụrụ na ebe akara jikoro. Jiri ntụziaka na ngwaọrụ mgbe n'itinye nozulu ga-atụle attenuation akpata site nke N'ihi na uba. Mgbe ahụ, dị iche iche formulas na-gbakọọ na kacha nta, nkezi, kacha ìhè, nakwa dị ka ndị ruru nke eke ìhè.