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Re: Refraction
From: Marcel Tschudin
Date: 2005 Aug 7, 12:54 +0300
From: Marcel Tschudin
Date: 2005 Aug 7, 12:54 +0300
George wrote: > My best answer to Robert's enquiry is that he is likely to see unexpected > values of dip whenever there are mirage-type effects near the horizon; > when > distant ships appear to have expanded upperworks or float above the > horizon. What weather conditions give rise to such effects, I don't know. > But if there are no nearby vessels to show up such effects, just a clear > horizon, how can you tell? This refers to terrestrial refraction. > Marcel Tschudin wrote- > >>I think you might have more success to ask this question some >>meteorologist. >>As already mentioned temperature inversions are very much disturbing. A >>meteorologist may tell you all the signs of this like e.g. type of clouds >>etc. May be you can start here >>http://www.net-weather.co.uk/forum/index.php? These thoughts referred to astronomical refraction Marcel