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#1
June 23rd 18, 03:47 AM
posted to uk.sci.weather
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Refraction really does happen
On both Thursday and Friday evenings I was able to see the setting sun when its calculated geometrical altitude was -0.5°. From my front bedroom window the land slopes to the NW but at a shallow angle (about 0.7°) and there are useful gaps in the trees. The height of this viewpoint only adds 0.1-0.2 degree to the dip of the horizon.
I shall probably be able to do this observation Saturday night, Sunday night and far as I can see, for ever. Soil is now like concrete (heavy clay over chalk). Tudor Hughes, Hamsey Green, Warlingham, Surrey, 557 ft, 170 m. |
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