देशान्तर
deshantar glob par uttar se dakshin ki or khianchi jane vali kalpanik rekhaean hai. ye rekhaean samanantar nahian hoti haian. prithvi ke bicho-bich 0 digri par khianchi gee ye rekhaean 'madhyahn rekha' ya 'grinavich rekha' kahalati haian. duniya ka manak samay bhi isi rekha se nirdharit kiya jata hai.
- ek deshantar ka antar hone par samay mean 4 minat ka antar hota hai. chooanki prithvi pashchim se poorab ki or ghoomati hai. phalatah poorab ki or badhane par pratyek deshantar par samay 4 minat badhata jata hai tatha pashchim mean jane par pratyek deshantar par samay 4 minat ghatata jata hai.
- deshantar rekhaean uttari tatha dakshini dhruv par ek bindu par mil jati haian.
- dhruvoan se vishuvat rekha ki or badhane par deshantaroan ke bich ki doori badhati jati hai.
- vishuvat rekha par inake bich ki doori adhikatam (111.32 kimi.) hoti hai.
- inaki kul sankhya 360 hai. ianglaind ke grinavich namak sthan se gujarane vali deshantar ko ‘pradhan deshantar’ ya 00 deshantar mana gaya hai.
- isaki bayian ki or ki rekhaean pashchimi deshantar aur dahini or ki rekhaean poorvi deshantar kahalati haian.
- deshantar ke adhar par hi kisi sthan ka samay jnat kiya jata hai.
- do deshantar rekhaoan ke bich ki doori 'gore' nam se jani jati hai.
- duniya ka manak samay bhi isi rekha se nirdharit kiya jata hai.
- landan ka shahar 'grinavich' isi rekha par sthit hai, isaliy ise grinavich rekha kahate hai.
- in deshantar rekhaoan ko madhyantar rekhaean bhi kaha jata hai kyoanki ek rekha par sthiti sabhi sthanoan par madhyanhn ya dopahar ek hi samay par hota hai.
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tika tippani aur sandarbh
sanbandhit lekh
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