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Index of Subjects --Apple-Mail-44-848370889 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=ISO-8859-1; delsp=yes; format=flowed Hi everyone: The only thing I could add to Davids' explanation is the a lot of =20 people thing that above the Arctic Circle, it is pitch black around the =20= December solstice. Even if the sun stays below the horizon, as it does =20= just north of the Arctic Circle, there is a large area of "dusk" sky in =20= that area which provides "just after sunset" illumination all day as =20 the brightest area near the Sun goes around the horizon in a circle. To actually get round-the-clock total darkness, you have to go 12=B0 =20 north of the Arctic Circle, so that the Sun is far enough below the =20 horizon to put no light in the sky at all. Pat On Mar 22, 2007, at 11:53 AM, David & Alison Webster wrote: > Hi All, Mar 22, 2007 > A physical model, such as an apple on a tilted wire for the earth =20= > and a bare light bulb, in an otherwise dark room, for the sun, helps =20= > to visualize this. > > The area nearest the north pole, as John implies, is the first to =20= > get 24-hr sunlight (early spring) and by the summer solstice this zone = =20 > of constant daylight has extended downward to the arctic circle.As the = =20 > season advances to fall, the zone of 24-hr light moves back up to the =20= > pole and then, in the period from autumnal equinox to winter solstice, = =20 > 24-hr darkness first arrives at the pole and then extends downward to =20= > the arctic circle. > > Yt, Dave Webster, Kentville > > John Sollows wrote: > >> To: Andy >> >> >> From: John >> >> >> date: march 21/07 >> >> >> This morning on CBC radio, they talked with a person who lives way up = =20 >> north. (I didn't catch the location, but they said it was the most =20= >> northerly year-round settlement in Canada). >> >> The settl;ement in question was Grise Fjord, on the southern coast of = =20 >> Ellesmere island. If Alert lights up about now, I suppose Grise =20 >> lighting up a week later makes sense! >> > > > > =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=20 =3D=3D Patrick Kelly Director of Computer Facilities =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=20 =3D=3D Faculty of Architecture and Planning Dalhousie University =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=20 =3D=3D PO Box 1000 Stn Central 5410 Spring Garden Road Halifax, Nova Scotia B3J 2X4 Halifax, Nova Scotia B3J 2X4 Canada Canada =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=20 =3D=3D Phone:(902) 494-3294 FAX:(902) 423-6672 E-mail:patrick.kelly@dal.ca =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=20 =3D=3D --Apple-Mail-44-848370889 Content-Transfer-Encoding: quoted-printable Content-Type: text/enriched; charset=ISO-8859-1 Hi everyone: The only thing I could add to Davids' explanation is the a lot of people thing that above the Arctic Circle, it is pitch black around the December solstice. Even if the sun stays below the horizon, as it does just north of the Arctic Circle, there is a large area of "dusk" sky in that area which provides "just after sunset" illumination all day as the brightest area near the Sun goes around the horizon in a circle. To actually get round-the-clock total darkness, you have to go 12=B0 north of the Arctic Circle, so that the Sun is far enough below the horizon to put no light in the sky at all. Pat On Mar 22, 2007, at 11:53 AM, David & Alison Webster wrote: <excerpt>Hi All, Mar 22, 2007 A physical model, such as an apple on a tilted wire for the earth and a bare light bulb, in an otherwise dark room, for the sun, helps to visualize this. The area nearest the north pole, as John implies, is the first to get 24-hr sunlight (early spring) and by the summer solstice this zone of constant daylight has extended downward to the arctic circle.As the season advances to fall, the zone of 24-hr light moves back up to the pole and then, in the period from autumnal equinox to winter solstice, 24-hr darkness first arrives at the pole and then extends downward to the arctic circle. Yt, Dave Webster, Kentville John Sollows wrote: <excerpt>To: Andy =20 From: John =20 date: march 21/07 =20 This morning on CBC radio, they talked with a person who lives way up north. (I didn't catch the location, but they said it was the most northerly year-round settlement in Canada).=20 =20 The settl;ement in question was Grise Fjord, on the southern coast of Ellesmere island. If Alert lights up about now, I suppose Grise lighting up a week later makes sense! </excerpt> </excerpt><fontfamily><param>Courier</param> = =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D Patrick Kelly Director of Computer Facilities = =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D Faculty of Architecture and Planning Dalhousie University = =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D PO Box 1000 Stn Central 5410 Spring Garden Road Halifax, Nova Scotia B3J 2X4 Halifax, Nova Scotia B3J 2X4 Canada Canada = =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D Phone:(902) 494-3294 FAX:(902) 423-6672 =20 E-mail:patrick.kelly@dal.ca = =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D </fontfamily> --Apple-Mail-44-848370889--
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