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Nishondihandai rang

Nishondihandai rang dar astronomiya, farqi qadrhoi sitoravist, ki dar du intervali darozihoi mavj hosil meshavand; khususiyati asosii taqsimoti energiyaro dar spektri jirmi osmoni va rangi on­ro ifoda mekunad. Mafhumi «Nishondihandai rang»- ro ibtidoi asri 20 astronomi nemis K. Shvarsshild ba ilm dokhil namud. To solhoi 50-umi asri 20 Nishondihandai pangi inter­nasionali mamul bud, ki farqi qadrhoi sitoravii internasionalii fotografi va fotoviaualiro ifoda mekard. Dar mamultarin sistemai fotometrii astronomiyai muosir IVU odatan Nishondihandai rangi  I-V va V-V istifoda meshavand, ki ba qadrhoi sitoravii sohahoi ultrabunafsh (I), kabud (V) va zardi (V) spektr muvofiq meoyand. Nishondihandai rangro yo bo usuli fotografi va yo bo usuli fotoelektri muayyan kardan mumkin ast. Nishondihandai rang hangomi omuzishi furuburdi rushnoii bayni sitoraho va sistemahoi onho va digar obektho istifoda me­shavad.

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SAFAVIYa

SAFAVIYa yake az silsilahoi tasavvufro guyand, ki dar davrai harakati payravoni mazhabi shia (asri XIII) …