Ẓeṛ aɣbalu n Akdu uɣmir

[[Tugna:Diámetro angular.png|thumb|]]
'''Akdu uɣmir''' i kra n tfekka d [[akdu]] imeẓri n tfekka seg kra n wadeg yettwakten d tiɣmert.<ref>{{Tanagit s web|akala=https://www.bartbusschots.ie/s/2013/06/08/photographing-satellites/|Azwel=Photographing Satellites|azemz=8 June 2013|anafsar=| akala n ufaylu = https://web.archive.org/web/20180629131502/https://www.bartbusschots.ie/s/2013/06/08/photographing-satellites/ | azemz n ufaylu = 29 yunyu 2018 }}</ref>
Akdu uɣmir yettusemres deg [[tasnallunt|tesnallunt]] i wakken ad imel akat n [[tafekka tagnnawt|tfekkiwin]] deg [[tallunt]] 

== Tiftarin tusnakin ==
Asiden n ukdu uɣmir n kra n talɣa d ayen izemren ad yili s usemres n wassaɣ:
:<math>\delta = 2 \arctan \left(\frac{1}{2}\,d / D \right),</math>
Anda 
<math>\delta</math> ukdu uɣmir
<math>d</math> d <math>D</math> d akdu imeẓri d westum ɣef tfekka yettwaktan s yiwet n tigget ya mi ara ad yili <math>D</math> yugar s waṭas  <math>d</math>, d ayen izemren ad yili usades n watig <math>\delta</math> s wassaɣ <math>\delta = d / D</math> anda atig n tiɣmert [[akat|tettwaket]] s [[Radyan|uradyan]].

I lment n tfekkiwin timezzayin ilan (yesɛan) akdu-ines imdetti yegda <math>d_\mbox{act}</math> akdu uɣmir yettwafk-d s wassaɣ:

:<math>\delta = 2 \arcsin \left(\frac{1}{2}\,d_\mbox{act} / D \right).</math>

== Ẓeṛ daɣen ==

== Imniren ==
[[Taggayt:tiɣemrin]]
[[Taggayt:Tanzallunt]]