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==== Rainbows at night: Observations of lunar rainbows are rare. The Moon is bright enough to produce a noticeable rainbow only when it is near its full phase. Also, people are usually indoors at night, and when they do step outside it is often into a light-polluted environment, which rules out any chance of seeing a lunar rainbow. Even when conditions are favourable, few people would notice a lunar rainbow because it is too dim to activate colour vision and therefore appears white. ==== Note, that like the Sun, to see a rainbow at night you would have to have your back to the Moon, and a line connecting the Moon and your head would point to the centre of the bow. Pat On Apr 19, 2008, at 7:21 PM, Margaret E.Millard wrote: <excerpt>out here along the shore often when there is a moon shining through either wispy low cloud or fog/mist there is quite often a moray or rainbow sometimes more clearly visible than others. I find my glasses, they have the sun protection built in, adds to it. Marg Millard, White Point, Queens http://margmillard.ca ----- Original Message ----- From: "David & Alison Webster" <<dwebster@glinx.com> To: <<naturens@chebucto.ns.ca> Sent: Saturday, April 19, 2008 11:20 AM Subject: Re: [NatureNS] rainbow at night? <excerpt>Northern Lights ? DW bdigout@seaside.ns.ca wrote: <excerpt>As we arrived home this evening in Samsonville at 9:00 P.M. there was a light arc in the nnw, going from the horizon up about 20 degrees and back to the horizon. There was a light mist at the time, but also a full moon. Does anybody have an idea what it might be? Billy </excerpt> </excerpt> </excerpt><fontfamily><param>Courier</param> ========================================================================== Patrick Kelly Director of Computer Facilities ========================================================================== Faculty of Architecture and Planning Dalhousie University ========================================================================== PO Box 1000 Stn Central 5410 Spring Garden Road Halifax, Nova Scotia B3J 2X4 Halifax, Nova Scotia B3J 2X4 Canada Canada ========================================================================== Phone:(902) 494-3294 FAX:(902) 423-6672 E-mail:patrick.kelly@dal.ca ========================================================================== </fontfamily> --Apple-Mail-31-717167488--
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