An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian

فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory

   Homepage   
   


A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Number of Results: 4 Search : south pole
geographic south pole
  قطب ِ دشتر ِ زمین‌نگاریک   
qotb-e daštar-e zaminnegârik

Fr.: pôle sud géographique   

south pole.

geographic; → south; → pole.

magnetic south pole
  قطب ِ دشتر ِ مغناتیسی   
qotab-e daštar-e meqnâtisi

Fr.: pôle sud magnétique   

The → counterpart of the → magnetic north pole. It lies near the → geographic north pole.

magnetic; → south; → pole.

south pole
  قطب ِ دشتر   
qotb-e daštar

Fr.: pôle Sud   

1) An → imaginary point in the → southern hemisphere representing the intersection of the → Earth's → rotation axis with the → globe with the → celestial sphere.
2) For a → magnet, the pole which points toward the geographic south.
3) In a → magnetic field, the point which receives a → line of force coming from the → north pole.

south; → pole.

South Pole Star
  ستاره‌ی ِ قطب ِ دشتر   
setâre-ye qotb-e daštar

Fr.: étoile du pôle sud   

A star that would mark the south → celestial pole. Presently no bright visible star is situated along the → rotation axis of the Earth in the southern hemisphere. But, because of the Earth's → axial precession, about 7,000 years from now the star → Delta Velorum in the constellation → Vela, the Sail, will come to within 0.2 degrees of the South Celestial Pole (around the year 9250 B.C.). That is closer to marking the celestial pole than → Polaris or → Sirius ever do during their reigns as pole stars! Sirius will become the South Pole Star some 60 thousand years from now (around the year 66270 B.C.). In that time, Sirius will come to within 1.6 degrees of the South Celestial Pole.

south; → celestial; → pole.