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#Mon Aug 09 11:50:40 CEST 2010
Text__bZR7MKObEd-WfYQ0GneCwQ_text=<p>The halves of a dissected objective are displaced to match images of adjacent stars; the size of the displacement is a measure of their angular distance. Since this distance changes as the Earth moves through space, even astronomical distances can be determined with the heliometer.</p>
Text__bZR7MKObEd-WfYQ0GneCwQ_title=Heliometer