Talk:Vertical deflection

Never knew about this subject. Seems pretty cool though the article is heavy on jargon and is not targeted at someone without some knowledge in the field already. Not saying the information should be trimmed, just assume the reader knows less about it. The only reason I knew what a zenith is by my background in astronomy but I doubt it is common knowledge as the article appears to assume.21:45, 28 Oct 2004 (UTC)129.42.208.182