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Index of Subjects Here in Samsonville (pop. 200) I guess the conditions were just right at the time. Thanks for the info. By the way, to me it appeared colour-less, but my daughters (23 & 25) and my wife all said they could see colours. Billy > Hi all: > > From p.189 of the 2008 RASC Handbook (section written by Roy Bishop): > > ==== > 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: > >> 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? >> >> >>> Northern Lights ? >>> DW >>> >>> bdigout@seaside.ns.ca wrote: >>> >>>> 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 >>>> >>> >> >> > > ======================================================================== > == > 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 > ======================================================================== > == > >
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