¹ Source: wiktionary.com
Definition of Librations
1. libration [n] - See also: libration
Lexicographical Neighbors of Librations
Literary usage of Librations
Below you will find example usage of this term as found in modern and/or classical literature:
1. The Moon: Her Motions, Aspect, Scenery, and Physical Condition by Richard Anthony Proctor, Lewis Morris Rutherfurd (1892)
"As yet we have taken no account whatever of the lunar librations. ... But the
lunar librations correspond to an actual change of place on the observer's ..."
2. An Elementary Treatise on Astronomy: In Four Parts. Containing a Systematic by William Augustus Norton (1853)
"There are three librations of the moon, that is, a vibratory motion of its spots
from three distinct causes. (1.) The moon's motion of rotation being ..."
3. A Treatise on Astronomy for the Use of Colleges and Schools by Hugh Godfray (1886)
"librations. 306. The moon always presents the same, or very nearly the same, face
to an observer; the mountains and valleys which cover the surface of our ..."
4. The Moon and the Condition and Configurations of Its Surface by Edmund Neison (1876)
"... whereas the lunar librations introduce complications whose effects are only
with difficulty to be understood.1 The effects of the lunar libration are in ..."
5. An Introduction to Astronomy by Forest Ray Moulton (1916)
"The result of the moon's librations is that there is only 41 per cent of its
surface which is never seen, while 41 per cent is always in sight, ..."
6. A Treatise on Astronomy by Elias Loomis (1870)
"234 librations of the moon.—Although it is true that nearly the same hemisphere
of the moon is always turned toward the earth, yet the moon has apparently a ..."
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