On the Equilibrium of Heterogeneous Substances - Revision history

en>Headbomb: Various citation cleanup + AWB fixes using AWB

2014-07-21T21:28:37Z

Various citation cleanup + AWB fixes using AWB

← Older revision		Revision as of 23:28, 21 July 2014
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	~~[[File:Wenner electrode array.svg\|thumb\|250px\|~~The '~~''Wenner electrode array''' consists of a line of four equally spaced electrodes. Current~~ is ~~injected through the outer electrodes~~ and ~~potential is measured between the inner electrodes~~.]]		The author's title is Andera and she thinks it sounds fairly great. For years she's been working as a travel agent. To climb is some thing I really enjoy performing. Her family life in Ohio but her spouse desires them to transfer.<br><br>Check out my webpage - best psychic readings ([http://hknews.classicmall.com.hk/groups/some-simple-tips-for-personal-development-progress/ what google did to me])
	~~An '''electrode array''~~' ~~is a configuration of [[electrode]]~~s ~~used for measuring either an [[electric current]] or [[voltage]]. Some electrode arrays can operate in~~ a ~~bidirectional fashion, in that they can also be used to provide a stimulating pattern of [[electric current]] or [[voltage]]~~.

	~~Common arrays include:~~
	*Schlumberger (Wenner)
	*Wenner alpha
	*Wenner beta
	*Wenner gamma
	*Pole-pole
	*Dipole-dipole
	*Pole-dipole
	*Equatorial dipole-dipole

	~~==Resistivity==~~
	~~Resistivity measurement of bulk materials~~ is a frequent application of electrode arrays. The figure shows a Wenner array, one of the possible ways of achieving this.<ref>Milsom, pp. 98–99.</ref> Injecting the current through electrodes separate from those being used for measurement of potential has the advantage of eliminating any inaccuracies caused by the injecting circuit resistance, particularly the contact resistance between the probe and the surface, which can be high. Assuming the material is homogenous, the resistivity is given by,

	~~:<math>\rho=2 \pi a \frac {V}{~~I~~} </math>~~

	~~Electrode arrays are widely used to measure resistivity in [[geophysics]] applications.<ref>Milsom, p~~. ~~98.</ref> It is also used~~ in ~~the semiconductor industry~~ to measure the bulk resistivity of silicon wafers, which in turn can be taken as a measure of the [[doping (semiconductor)\|doping]] that has been applied to the wafer, before further manufacturing processes are undertaken.<~~ref~~>~~Lark-Horovitz & Johnson, p. 54.~~<~~/ref~~>

	~~==See also==~~
	*[[Four-~~terminal sensing]]~~
	*[[Multielectrode array]]
	*[~~[Electrical resistivity measurement of concrete]]~~

	~~==References==~~
	~~{{reflist}}~~
	*Karl Lark-Horovitz, Vivian Annabelle Johnson, ''Methods of experimental physics: Solid state physics'', Academic Press, 1959 ISBN 0-12-475946-7.
	*{{cite book \|last=Loke \|first=M.H. \|title=Tutorial: 2-D and 3-D electrical imaging surveys \|year=2004 \|url=http://~~www~~.~~geoelectrical~~.com/~~coursenotes.zip \|format=PDF \|accessdate=2007~~-06-~~11 }}~~
	*John Milsom, ''Field geophysics'', John Wiley and Sons, 2003 ISBN 0-~~470~~-~~84347~~-0.



	~~{{electronics~~-~~stub}}~~

	~~[[Category:Geophysical imaging]~~]

en>Nanite: /* External links */ add archive.org links

2013-08-29T14:35:05Z

External links: add archive.org links

← Older revision		Revision as of 16:35, 29 August 2013
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	I'~~m Luther but I by no means truly liked~~ that ~~name~~. ~~Bookkeeping~~ is ~~what she does~~. The ~~factor she adores most~~ is ~~flower arranging and she~~ is ~~attempting~~ to ~~make it a occupation~~. ~~Her family members life~~ in ~~Delaware but she needs~~ to ~~transfer simply because~~ of ~~her family~~.<br><br>~~Also visit my homepage; auto warranty~~ [[http://~~Www~~.~~Gettingtherefromhere~~.~~info~~/~~User~~-~~Profile/userId/13851 see it here~~]]		[[File:Wenner electrode array.svg\|thumb\|250px\|The '''Wenner electrode array''' consists of a line of four equally spaced electrodes. Current is injected through the outer electrodes and potential is measured between the inner electrodes.]]
			An '''electrode array''' is a configuration of [[electrode]]s used for measuring either an [[electric current]] or [[voltage]]. Some electrode arrays can operate in a bidirectional fashion, in that they can also be used to provide a stimulating pattern of [[electric current]] or [[voltage]].

			Common arrays include:
			*Schlumberger (Wenner)
			*Wenner alpha
			*Wenner beta
			*Wenner gamma
			*Pole-pole
			*Dipole-dipole
			*Pole-dipole
			*Equatorial dipole-dipole

			==Resistivity==
			Resistivity measurement of bulk materials is a frequent application of electrode arrays. The figure shows a Wenner array, one of the possible ways of achieving this.<ref>Milsom, pp. 98–99.</ref> Injecting the current through electrodes separate from those being used for measurement of potential has the advantage of eliminating any inaccuracies caused by the injecting circuit resistance, particularly the contact resistance between the probe and the surface, which can be high. Assuming the material is homogenous, the resistivity is given by,

			:<math>\rho=2 \pi a \frac {V}{I} </math>

			Electrode arrays are widely used to measure resistivity in [[geophysics]] applications.<ref>Milsom, p. 98.</ref> It is also used in the semiconductor industry to measure the bulk resistivity of silicon wafers, which in turn can be taken as a measure of the [[doping (semiconductor)\|doping]] that has been applied to the wafer, before further manufacturing processes are undertaken.<ref>Lark-Horovitz & Johnson, p. 54.</ref>

			==See also==
			*[[Four-terminal sensing]]
			*[[Multielectrode array]]
			*[[Electrical resistivity measurement of concrete]]

			==References==
			{{reflist}}
			*Karl Lark-Horovitz, Vivian Annabelle Johnson, ''Methods of experimental physics: Solid state physics'', Academic Press, 1959 ISBN 0-12-475946-7.
			*{{cite book \|last=Loke \|first=M.H. \|title=Tutorial: 2-D and 3-D electrical imaging surveys \|year=2004 \|url=http://www.geoelectrical.com/coursenotes.zip \|format=PDF \|accessdate=2007-06-11 }}
			*John Milsom, ''Field geophysics'', John Wiley and Sons, 2003 ISBN 0-470-84347-0.



			{{electronics-stub}}

			[[Category:Geophysical imaging]]

en>Saehry: Moved from "Thermodynamics" category to subcategory.

2012-07-17T12:27:44Z

Moved from "Thermodynamics" category to subcategory.

New page

I'm Luther but I by no means truly liked that name. Bookkeeping is what she does. The factor she adores most is flower arranging and she is attempting to make it a occupation. Her family members life in Delaware but she needs to transfer simply because of her family.<br><br>Also visit my homepage; auto warranty [[http://Www.Gettingtherefromhere.info/User-Profile/userId/13851 see it here]]