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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Moonrise
From: Frank Reed CT
Date: 2006 Mar 20, 21:27 EST
From: Frank Reed CT
Date: 2006 Mar 20, 21:27 EST
Not to be a spoilsport, but... photo? That's just a bit of digital art, isn't it? A fantasy world with a giant moon, a distant sun, and an unknown sea. Pretty, yes. But fantasy. Be thankful the Moon (the real Earth's moon) is only half a degree wide in our skies. If it were close enough to appear even two degrees wide, the ocean tides would rise and fall with an average range of about 200 feet. The tide-generating acceleration is proportional to the mean density of the tide-producing object and also proportional to that object's apparent angular diameter cubed (2 degrees is 4x bigger, so tides 64x larger in range). -FER 42.0N 87.7W, or 41.4N 72.1W. www.HistoricalAtlas.com/lunars
