Cross-multiplication - Revision history

en>Cydebot: Robot - Speedily moving category Fractions to :Category:Fractions (mathematics) per CFDS.

2014-11-11T01:35:06Z

Robot - Speedily moving category Fractions to Category:Fractions (mathematics) per CFDS.

← Older revision		Revision as of 03:35, 11 November 2014
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	The name of the ~~author~~ is ~~Numbers~~. My working day occupation ~~is a librarian~~. ~~Years in the past we moved to~~ North Dakota ~~and~~ I love ~~every day residing here. One of the issues she enjoys most~~ is ~~to do aerobics and now she is attempting to earn money~~ with it.<br><br>~~Visit~~ my web page ~~...~~ std ~~testing at home,~~ [http://~~facehack~~.~~ir/index~~.~~php?do=~~/~~blog~~/20/~~what~~-~~you~~-~~have~~-to-do-~~facing~~-~~candida/ Going at facehack.ir~~],		The name of the writer is Figures. Bookkeeping is her working day occupation now. North Dakota is her beginning place but she will have to transfer 1 day or an additional. What I love doing is taking part in baseball but I haven't produced a dime with it.<br><br>Here is my web page; home std test [[http://www.crmidol.com/discussion/19701/how-tell-if-woman-interested-or-sexually-captivated-you visit the next website page]]

en>SimonTrew: /* top */ effect -> calculation

2014-03-01T14:22:35Z

top: effect -> calculation

← Older revision		Revision as of 16:22, 1 March 2014
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	~~[[File:Polyconic projection SW.jpg\|300px\|thumb\|American polyconic projection~~ of the ~~world]]~~		The name of the author is Numbers. My working day occupation is a librarian. Years in the past we moved to North Dakota and I love every day residing here. One of the issues she enjoys most is to do aerobics and now she is attempting to earn money with it.<br><br>Visit my web page ... std testing at home, [http://facehack.ir/index.php?do=/blog/20/what-you-have-to-do-facing-candida/ Going at facehack.ir],
	'''Polyconic''' can refer either to a class of [[map projection]]s or to a specific projection known less ambiguously as the American Polyconic. Polyconic as a class refers to those projections whose parallels are all non-concentric circular arcs, except for a straight equator, and the centers of these circles lie along a central axis. This description applies to projections in equatorial aspect.<ref>''An Album of Map Projections'' (US Geological Survey Professional Paper 1453), John P. Snyder & Philip M. Voxland, 1989, p. 4.</ref>

	~~As a specific projection, the American Polyconic~~ is ~~conceptualized as "rolling" a cone tangent to the Earth at all parallels of latitude, instead of a single cone as in a normal conic projection~~. ~~Each parallel~~ is a ~~circular arc of true scale~~. ~~The scale is also true on the central meridian of the projection. The projection was~~ in ~~common use by many map-making agencies of~~ the ~~United States from the time of its proposal by [[Ferdinand Rudolph Hassler]] in 1825 until the middle of the 20th century~~.~~<ref>''Flattening the Earth: Two Thousand Years of Map Projections'', John P. Snyder, 1993, pp. 117-122, ISBN 0-226-76747-7.</ref>~~

	~~The projection is defined by:~~

	~~:<math>x = \cot(\varphi) \sin((\lambda - \lambda_0)\sin(\varphi))\,</math>~~

	~~:<math>y = \varphi-\varphi_0 + \cot(\varphi) (1 - \cos((\lambda - \lambda_0)\sin(\varphi)))\,</math>~~

	~~where <math>\lambda</math> is the longitude~~ of the ~~point to be projected; <math>\varphi</math>~~ is ~~the latitude of the point~~ to ~~be projected; <math>\lambda_0</math> is the longitude of the central meridian,~~ and ~~<math>\varphi_0</math>~~ is ~~the latitude chosen~~ to ~~be the origin at <math>\lambda_0</math>~~. ~~To avoid division by zero, the formulas above are extended so that if~~ <~~math~~>~~\varphi = 0~~<~~/math> then <math>x = \lambda</math> and <math>y = 0</math~~>.

	~~==See also==~~
	~~{{Portal\|Atlas}}~~
	* [[List of map projections]]

	~~==References==~~
	~~{{reflist}}~~

	~~==External links==~~
	*{{Mathworld\|PolyconicProjection}}
	* [http://www.~~radicalcartography~~.~~net/?projectionref Table of examples and properties of all common projections]~~, ~~from radicalcartography.net~~
	* [http://~~www~~.~~uff~~.br/~~mapprojections~~/~~Polyconic_en.html An interactive Java Applet~~ to ~~study the metric deformations of the Polyconic Projection]~~.

	~~{{Map Projections}}~~

	~~[[Category:Cartographic projections~~]]

	~~{{cartography-stub}}~~

216.164.60.116: /* Rule of Three */

2013-12-01T12:39:32Z

Rule of Three

← Older revision		Revision as of 14:39, 1 December 2013
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	~~She~~ is ~~recognized by~~ the ~~name~~ of ~~Myrtle Shryock~~. ~~Body developing~~ is ~~what my family members and I appreciate~~. ~~My day job~~ is ~~a meter reader~~. ~~California~~ is where ~~her house~~ is ~~but she needs~~ to ~~transfer because~~ of ~~her family~~.<br><br>~~My web-site;~~ [http://~~muzikoman~~.~~com~~/~~profile-682~~/~~info~~/ ~~std home test~~]		[[File:Polyconic projection SW.jpg\|300px\|thumb\|American polyconic projection of the world]]
			'''Polyconic''' can refer either to a class of [[map projection]]s or to a specific projection known less ambiguously as the American Polyconic. Polyconic as a class refers to those projections whose parallels are all non-concentric circular arcs, except for a straight equator, and the centers of these circles lie along a central axis. This description applies to projections in equatorial aspect.<ref>''An Album of Map Projections'' (US Geological Survey Professional Paper 1453), John P. Snyder & Philip M. Voxland, 1989, p. 4.</ref>

			As a specific projection, the American Polyconic is conceptualized as "rolling" a cone tangent to the Earth at all parallels of latitude, instead of a single cone as in a normal conic projection. Each parallel is a circular arc of true scale. The scale is also true on the central meridian of the projection. The projection was in common use by many map-making agencies of the United States from the time of its proposal by [[Ferdinand Rudolph Hassler]] in 1825 until the middle of the 20th century.<ref>''Flattening the Earth: Two Thousand Years of Map Projections'', John P. Snyder, 1993, pp. 117-122, ISBN 0-226-76747-7.</ref>

			The projection is defined by:

			:<math>x = \cot(\varphi) \sin((\lambda - \lambda_0)\sin(\varphi))\,</math>

			:<math>y = \varphi-\varphi_0 + \cot(\varphi) (1 - \cos((\lambda - \lambda_0)\sin(\varphi)))\,</math>

			where <math>\lambda</math> is the longitude of the point to be projected; <math>\varphi</math> is the latitude of the point to be projected; <math>\lambda_0</math> is the longitude of the central meridian, and <math>\varphi_0</math> is the latitude chosen to be the origin at <math>\lambda_0</math>. To avoid division by zero, the formulas above are extended so that if <math>\varphi = 0</math> then <math>x = \lambda</math> and <math>y = 0</math>.

			==See also==
			{{Portal\|Atlas}}
			* [[List of map projections]]

			==References==
			{{reflist}}

			==External links==
			*{{Mathworld\|PolyconicProjection}}
			* [http://www.radicalcartography.net/?projectionref Table of examples and properties of all common projections], from radicalcartography.net
			* [http://www.uff.br/mapprojections/Polyconic_en.html An interactive Java Applet to study the metric deformations of the Polyconic Projection].

			{{Map Projections}}

			[[Category:Cartographic projections]]

			{{cartography-stub}}

en>JohnBlackburne: Reverted good faith edits by 187.104.81.130 (talk): Nothing to do with the mathematical topic. (TW)

2012-07-07T00:02:48Z

Reverted good faith edits by 187.104.81.130 (talk): Nothing to do with the mathematical topic. (TW)

New page

She is recognized by the name of Myrtle Shryock. Body developing is what my family members and I appreciate. My day job is a meter reader. California is where her house is but she needs to transfer because of her family.<br><br>My web-site; [http://muzikoman.com/profile-682/info/ std home test]