Iji iko eme ihe ọhụrụ

1, ojiji nke arụmọrụ nke iko: mmiri ọṅụṅụ, nchekwa mmiri, nchekwa, nhazi ifuru, ịzụ ụmụ ahụhụ, ịzụ azụ, ịtinye pen, ịgwakọta (tinye ihe na iko iko ma ọ bụ ịma jijiji), karịa olu;

2, ojiji nke enyo enyo anya Njirimara: ala nke iko dị ka concave na convex na-ebuli elu, condenser, iko ahụ dị ka refractor;

3. Na-eji arụ ọrụ egwu egwu nke iko: tinye n'ime mmiri nke omimi dị iche iche iji mee Ngwa egwu egwu (dị ka chimes) ma kwughachi iko efu;

3, iji ihe eji eme ihe nke iko: ịkụ ndị mmadụ, karịa ịtụba tere aka, na-agbachitere elu, ntu obere mbọ, na-egweri ụmụ ahụhụ, na-egweri ntụ ntụ, na-agbaji ihe ndị a na-egbutu, dị ka ngwá agha onwe-agbachitere, akara;

4, jiri udi nke arụmọrụ iko: see okirikiri, see ahịrị kwụ ọtọ na ihe ndị ọzọ.