Learn That Word
Join now

A diagramatic representation of a Galilean refractor.
Source: http://en.wiktionary.org/wiki/File:Galileantelescope.png
Author: Tamasflex

LearnThatWord and the Open Dictionary of English are programs by LearnThat Foundation, a 501(c)3 nonprofit.

Questions? Feedback? We want to hear from you!
Email us or click here for instant support.

Copyright © 2005 and after - LearnThat Foundation. Patents pending.