en>Yamaguchi先生: Reverted edits by 94.37.245.132 (talk) to last version by 203.11.131.82

2015-01-08T00:45:18Z

Reverted edits by 94.37.245.132 (talk) to last version by 203.11.131.82

← Older revision		Revision as of 02:45, 8 January 2015
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	The ~~'''Blandford–Znajek process'''~~ is ~~a mechanism for~~ the ~~extraction~~ of ~~[[energy]]~~ from a ~~[[rotating black hole]]~~,<~~ref~~>~~{{Citation \|last1=Frolov \|first1=Valeri P. \|last2=Zelnikov \|first2=Andrei \|title=Introduction~~ to ~~Black Hole Physics \|publisher=Oxford University Press \|year=2011 \|location=Oxford \|url=~~http://~~books~~.~~google~~.com/~~books?id=r_l5AK9DdXsC&lpg=PA34 \|isbn=978-0-19-969229-3 \|zbl=1234~~.~~83001}}, (Chapter 8~~.~~9: Black Holes in External Magnetic Field)<~~/~~ref> introduced~~ by ~~[[Roger Blandford]]~~ and [~~[Roman Znajek]] in 1977~~.~~<ref>R~~. ~~D. Blandford~~ and R. L. ~~Znajek~~, ~~"Electromagnetic extraction~~ of ~~energy from Kerr black holes",~~ [http://~~adsabs~~.~~harvard.edu~~/~~abs/1977MNRAS~~.~~179~~..~~433B Mon~~. ~~Not~~. ~~R. Astr. Soc. 179:433-456 (1977)]~~<~~/ref~~> It is ~~one of~~ the ~~best explanations for~~ the ~~way~~ [~~[quasar]~~]s ~~are powered.<ref>~~http://~~everything2~~.com/~~title/Blandford%2520Znajek%2520process</ref> It requires an [[accretion disc~~]~~] with~~ a ~~strong polar magnetic field around~~ a ~~spinning black hole. The magnetic field extracts spin energy and~~ the ~~power can be estimated as~~ the ~~energy density at the speed of light cylinder times area:~~		Not all windscreens have to be replaced when damages takes place. In some cases, the glass can be fixed. Car glass repair work can be attained rapidly and with less aggravation than a full replacement. Repairs can only be done on laminated glass, however they do provide the benefit of creating a smaller carbon footprint than a full replacement which includes the disposal of the old glass. The system for repairing glass is basic and works by injecting liquid resin into the broken location of the glass. 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[http://tinyurl.com/nqbkz6z cheap ugg boots] When your broken window is out, they will then eliminate all splinters and broken glass from your car's interior with a really effective vacuum to make sure there is no harm or lacerations to future [http://tinyurl.com/nqbkz6z ugg outlet] travelers. Fitting the brand-new windscreen is a job for a proficient repair guy who will make sure that the glass is the correct kind [http://tinyurl.com/nqbkz6z cheap ugg boots] for your car's kind and model.<br><br>When having your auto-glass changed, or any glass for your van, it is not normally necessary for you to call your insurance company. The majority of car glass replacement companies have agreements with all the large insurance firms. If your insurance company has an [http://www.Tumblr.com/tagged/extra+payment extra payment] for glass repair or replacement, the auto-glass company will ask that you to pay this on completion of the task, however after that, all documentation will be taken care of by them. It is constantly a good idea to check out your policy documents prior to your repair person arrives to fix your vehicle glass so you will understand if there is any extra monies to give.

	: <~~math~~> ~~P=B^2\left(\frac{r}{r_c}\right)^4 r_c c=\frac{B^2 r^4 \omega^2}{c}~~<~~/math~~>

	~~where B~~ is the ~~magnetic field strength~~, ~~<math>r_c</math>~~ the ~~speed~~ of ~~light radius and ''ω''~~ the ~~angular velocity.<ref>Relativistic Astrophysics and Cosmology Lecture Notes~~, A. ~~Lasenby, Cambridge University, 2010-2011~~.~~</ref>~~

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

	~~{{DEFAULTSORT:Blandford-Znajek process}}~~
	~~[[Category:Black holes]]~~
	~~[[Category:Quasars\|*]]~~


	~~{{physics-stub}}~~
	~~{{astronomy-stub}}~~

en>RJSutter: Punctuation

2013-07-30T00:42:52Z

Punctuation

← Older revision		Revision as of 02:42, 30 July 2013
Line 1:		Line 1:
	~~Linking~~ [http://~~wiki~~.~~cyberneticstudios~~.~~org~~/~~index.php~~?~~title~~=~~User~~:~~William8188 orlando seo companies~~] ~~to an image~~, ~~use that on your website~~, ~~watching video on the Search Engine Strategies and PubCon~~ [http://~~brilliantpressrelease~~.~~com~~/~~Helpful-Questions-On-Finding~~-~~Core-Details-For-Seo-Services-Orlando.htm orlando seo services~~] ~~are undoubtedly~~ the ~~two of a webpage If you treasured this article and also you would like to get more info regarding~~ [http://~~www.xxxbum~~.com/~~user~~/~~INPK local seo orlando~~] ~~kindly visit~~ the ~~web site~~. .		The '''Blandford–Znajek process''' is a mechanism for the extraction of [[energy]] from a [[rotating black hole]],<ref>{{Citation \|last1=Frolov \|first1=Valeri P. \|last2=Zelnikov \|first2=Andrei \|title=Introduction to Black Hole Physics \|publisher=Oxford University Press \|year=2011 \|location=Oxford \|url=http://books.google.com/books?id=r_l5AK9DdXsC&lpg=PA34 \|isbn=978-0-19-969229-3 \|zbl=1234.83001}}, (Chapter 8.9: Black Holes in External Magnetic Field)</ref> introduced by [[Roger Blandford]] and [[Roman Znajek]] in 1977.<ref>R. D. Blandford and R. L. Znajek, "Electromagnetic extraction of energy from Kerr black holes", [http://adsabs.harvard.edu/abs/1977MNRAS.179..433B Mon. Not. R. Astr. Soc. 179:433-456 (1977)]</ref> It is one of the best explanations for the way [[quasar]]s are powered.<ref>http://everything2.com/title/Blandford%2520Znajek%2520process</ref> It requires an [[accretion disc]] with a strong polar magnetic field around a spinning black hole. The magnetic field extracts spin energy and the power can be estimated as the energy density at the speed of light cylinder times area:

			: <math> P=B^2\left(\frac{r}{r_c}\right)^4 r_c c=\frac{B^2 r^4 \omega^2}{c}</math>

			where B is the magnetic field strength, <math>r_c</math> the speed of light radius and ''ω'' the angular velocity.<ref>Relativistic Astrophysics and Cosmology Lecture Notes, A. Lasenby, Cambridge University, 2010-2011.</ref>

			== References ==
			{{reflist}}

			{{DEFAULTSORT:Blandford-Znajek process}}
			[[Category:Black holes]]
			[[Category:Quasars\|*]]


			{{physics-stub}}
			{{astronomy-stub}}

64.73.101.225 at 20:18, 25 January 2010

2010-01-25T20:18:13Z

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Omega ratio - Revision history

en>Yamaguchi先生: Reverted edits by 94.37.245.132 (talk) to last version by 203.11.131.82

en>RJSutter: Punctuation

64.73.101.225 at 20:18, 25 January 2010