libration — قاموس الإنجليزية

اسم

1. The act of librating.

   الاستعمال

   • معدود
   • غير معدود

2. The apparent wobble or variation in the visible side of the Moon that permanently faces the Earth, allowing observers on Earth to see, over a period of time, slightly more than half of the lunar surface.

   الاستعمال

   • معدود
   • غير معدود

3. A similar rotational or orbital characteristic of some other celestial body.

   الاستعمال

   • broadly
   • معدود
   • غير معدود

4. The oscillation of an angle about a stable equilibrium point.

   الاستعمال

   • معدود
   • غير معدود

5. A vibrational degree of freedom whereby a group of atoms partly rotates back and forth, similar to the Moon's motion.

   الاستعمال

   • معدود
   • غير معدود

6. A wavering between two opposing thoughts or choices.

   الاستعمال

   • معدود
   • مجازي
   • غير معدود

   أمثلة

   أمثلة إضافية (1)

   We may not quarrel with attempts to picture the libration of emotion which sways Clytaemestra as she veers from love for her husband to the desire to take vengeance upon him[…]

اسم

1. (astronomy) a real or apparent slow oscillation of a moon or satellite

   مصطلحات أعمّ

   oscillationvariation

   أمثلة

   the libration of the moon