|About Us | What's New | Search | Site Map | Contact Us|
You are not logged in. [Log In] Wordsmith.org Forums English as a global language libration Register Forums Calendar Active Threads Search Forum Help
#125657 - 03/21/04 03:26 PM libration Joined: Jan 2001
Posts: 13,858 wwh
Joined: Jan 2001
Date: Sat Nov 1 00:03:06 EST 1997
li.bra.tion n. A very slow oscillation, real or apparent, of a satellite as viewed from the larger celestial body around which it revolves.[Lat. libratio, oscillation [librare, to balance [libra, balance]
Ernan McMullin, Galileo Galilei (1564-1642)., Vol. 10, Colliers Encyclopedia CD-ROM, 02-28-1996.
"After its appearance, Galileo made his last observational discovery, the libration (a slight apparent rotational variation) of the moon."
An effect caused by the apparent wobble of the Moon as it orbits the Earth. The Moon always keeps the same side toward the Earth, but due to libration, 59% of the Moon's surface can be seen over a period of time.
Moderated by Jackie
Forum Statistics Forums16Topics13,879Posts224,115Members9,030 Most Online3,341
Dec 9th, 2011
Newest Members santo, piostylist, prgill, thefoeller, Ajubdeen
9030 Registered Users
Who's Online Now 0 registered members (), 53 guests, and 2 spiders. Key: Admin, Global Mod, Mod
Top Posters(30 Days) LukeJavan8 35may2point0 18
Top Posters(All Time) wwh 13,858Faldage 13,803Jackie 11,613tsuwm 10,538LukeJavan8 9,036wofahulicodoc 7,604Buffalo Shrdlu 7,210AnnaStrophic 6,511Wordwind 6,296of troy 5,400
Forum Rules · Mark All Read Contact Us · Wordsmith.org · Top