▁Iran . ▁At ▁the ▁ 2 0 0 6 ▁census , ▁its ▁population ▁was ▁ 3 9 5 , 1 4 9 , ▁in ▁ 1 0 2 , 7 1 4 ▁families . ▁ ▁The ▁District ▁has ▁one ▁city : ▁Z an jan . ▁The ▁District ▁has ▁six ▁rural ▁districts ▁( de h est an ): ▁Bon ab ▁R ural ▁District , ▁B ugh da ▁K and i ▁R ural ▁District , ▁Mo je zat ▁R ural ▁District , ▁Q ol tu q ▁R ural ▁District , ▁T ah am ▁R ural ▁District , ▁and ▁Z an jan r ud - e ▁B ala ▁R ural ▁District . ▁ ▁References ▁▁ ▁Category : D istrict s ▁of ▁Z an jan ▁Province ▁Category : Z an jan ▁County <0x0A> </s> ▁A ▁h odos cope ▁( from ▁the ▁Greek ▁" hod os " ▁for ▁way ▁or ▁path , ▁and ▁" sk op os " ▁an ▁observer ) ▁is ▁an ▁instrument ▁used ▁in ▁particle ▁detect ors ▁to ▁detect ▁passing ▁charged ▁particles ▁and ▁determine ▁their ▁traject ories . ▁ ▁H odos cop es ▁are ▁character ized ▁by ▁being ▁made ▁up ▁of ▁many ▁segments ; ▁the ▁combination ▁of ▁which ▁segments ▁record ▁a ▁detection ▁is ▁then ▁used ▁to ▁infer ▁where ▁the ▁particle ▁passed ▁through ▁h odos cope . ▁ ▁The ▁typical ▁det ector ▁segment ▁is ▁a ▁piece ▁of ▁sc int ill ating ▁material , ▁which ▁em its ▁light ▁when ▁a ▁particle ▁passes ▁through ▁it . ▁ ▁The ▁sc int ill ation ▁light ▁can ▁be ▁converted ▁to ▁an ▁elect