An Etymological Dictionary of Astronomy and Astrophysics
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فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory

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Number of Results: 5 Search : outer
outer
  بیرونی   
biruni (#)

Fr.: externe   

Being or located on or toward the outside; external.

out + -er suffix of comparative degree of adjectives.

external.

outer core
  مغزه‌ی ِ بیرونی   
maqze-ye biruni

Fr.: noyau externe   

The upper zone of the → Earth's core, just below the → mantle, extending from a depth of about 2900 km to 5100 km. It is presumed to be → liquid because it sharply reduces → compressional wave velocities and does not transmit → shear waves. Its density is from 9 to 11 g/cm3. The → temperature ranges from 4400 °C in the outer areas to 6100 °C near the → inner core. Since shear waves do not propagate through a fluid, the Earth's outer core is considered to be liquid because the shear wave velocity is zero. Convection motion within the outer core, along with the rotation of the Earth creates an effect that maintains the Earth's → magnetic field.

outer; → core.

outer Lindblad resonance (OLP)
  باز‌آوایی ِ لیندبلاد ِ برونی   
bâzâvâyi-ye Lindblad-e boruni

Fr.: résonance de Lindblad externe   

A → Lindblad resonance expressed by: Ωp = Ω + κ/m.

outer; → Lindblad resonance.

outer planet
  سیاره‌یِ بیرونی   
seyyâre-ye biruni (#)

Fr.: planète extérieure   

A planet that revolves around the Sun beyond the → asteroid belt, namely → Jupiter, → Saturn, → Uranus, and → Neptune.

out; → planet.

outer space
  فضا، برون-فضا، فضای ِ بیرونی   
fazâ, borun-fazâ, fazâ-ye biruni

Fr.: espace, espace extra-atmosphérique   

The space beyond the Earth's atmosphere.

outer; → space.