Income statement - Revision history

70.162.224.253: add comma per MoS

2015-01-09T18:00:12Z

add comma per MoS

← Older revision		Revision as of 20:00, 9 January 2015
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	~~Hello~~, I~~'m Joanne, a 23 year old from Richey, United States~~.~~<br>My hobbies include (but are not limited to) Poker, Vehicle restoration~~ and ~~watching The Simpsons~~.~~<br><br>My homepage~~ ..~~. [~~http://~~tags.mathtag~~.com~~/view/img/?strat=289819&cr=533361&supply=9990&rand=&redir=~~http://~~bestpricecoach~~.com ~~greatest tote value~~]		High there, I am Adrianne and I totally dig that name. Vermont has always been my very home and I true love every day living in this case. Gardening is what I do every week. I am a people manager only soon I'll be by myself. You can find my web property here: http://circuspartypanama.com<br><br>Also visit my webpage [http://circuspartypanama.com clash of clans trainer]

en>NeocNeoc: /* Bottom line */ Small typographic changes

2014-02-25T11:55:19Z

Bottom line: Small typographic changes

← Older revision		Revision as of 13:55, 25 February 2014
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	~~{{See also\|Light intensity (disambiguation)}}~~		Hello, I'm Joanne, a 23 year old from Richey, United States.<br>My hobbies include (but are not limited to) Poker, Vehicle restoration and watching The Simpsons.<br><br>My homepage ... [http://tags.mathtag.com/view/img/?strat=289819&cr=533361&supply=9990&rand=&redir=http://bestpricecoach.com greatest tote value]
	~~In [[Photometry (optics)\|photometry]]~~, '''luminous intensity''' is a measure of the [[wavelength]]-weighted [[Power (physics)\|power]] emitted by a [[light source]] in a particular direction per unit [[solid angle]], based on the [[luminosity function]], a ~~standardized model of the sensitivity of the [[human eye]]. The [[SI]] unit of luminous intensity is the [[candela]] (cd), an [[SI base unit]].~~

	Photometry deals with the measurement of visible light as perceived by human eyes. The human eye can only see light in the [[visible spectrum]] and has different sensitivities to [[light]] of different wavelengths within the spectrum. When adapted for bright conditions ([[photopic vision]]), the eye is most sensitive to greenish-yellow light at 555 nm. Light with the same [[radiant intensity]] at other wavelengths has a lower luminous intensity. The curve which measures the response of the human eye to light is a defined standard, known as the [[luminosity function]]. ~~This curve, denoted ''V''(λ) or~~ <~~math~~>~~\textstyle \overline{y}~~(~~\lambda~~)~~</math>~~, is based on an average of widely differing experimental data from scientists using different measurement techniques. For instance, the measured responses of the eye to violet light varied by a factor of ten.

	~~==Relationship to other measures==~~
	Luminous intensity should not be confused with another photometric unit, [[luminous flux]], which is the total perceived power emitted in all directions. Luminous intensity is the perceived power ''per unit solid angle''. If a lamp has a 1 lumen bulb and the optics of the lamp are set up to focus the light evenly into a 1 [[steradian]] beam, then the beam would have a luminous intensity of 1 candela. If the optics were changed to concentrate the beam into 1/2 steradian then the source would have a luminous intensity of 2 candela. The ~~resulting beam is narrower and brighter, though its luminous flux remains unchanged.~~

	~~Luminous intensity is also not the same as the [[radiant intensity]], the corresponding objective [[physical quantity]] used in the measurement science of [[radiometry]].~~

	~~==Units==~~
	Like other SI base units, the candela has an [[operational definition]]—it is defined by the description of a physical process that will produce one candela of luminous intensity. By definition, if one constructs a light source that emits monochromatic green light with a frequency of 540 THz, and that has a radiant intensity of 1/683 [[watt]]s per [[steradian]] in a given direction, that light source will emit one candela in the specified direction.<~~ref~~>~~{{Cite web~~
	~~\| title = Base unit definitions: Candela~~
	~~\| work = The NIST Reference on Constants, Units, and Uncertainty~~
	~~\| url = http://physics.nist.gov/cuu/Units/candela.html~~
	~~\| accessdate = 8 February 2008~~
	}}<~~/ref~~>

	The frequency of light used in the definition corresponds to a wavelength of 555 nm, which is near the peak of the eye's response to light. If the source emitted uniformly in all directions, the total [[radiant flux]] would be about 18.40 mW, since there are 4π steradians in a sphere. ~~A typical candle produces very roughly one candela of luminous intensity.~~

	Prior to the definition of the candela, variety of units for luminous intensity were used in various countries. These were typically based on the brightness of the flame from a "standard candle" of defined composition, or the brightness of an incandescent filament of specific design. One of the best-known of these standards was the [[England\|English]] standard: [[candlepower]]. ~~One candlepower was the light produced by a pure [[spermaceti]] candle weighing one sixth of a pound and burning at a rate of 120 [[Grain (mass)\|grains]] per hour~~. ~~Germany, Austria, and Scandinavia used the~~ [~~[Hefnerkerze]], a unit based on the output of a [[Hefner lamp]].<ref>{{Cite web\|url=~~http://~~www~~.~~sizes~~.com/~~units~~/~~hefner.htm \|title=Hefner unit, or Hefner candle \|work=Sizes.com \|date=30 May 2007 \|accessdate=25 February 2009}}<~~/ref> In 1881, [[Jules Violle]] proposed the ''[[Violle]]'' as a unit of luminous intensity, and it was notable as the first unit of light intensity that did not depend on the properties of a particular lamp. All of these units were superseded by the definition of the candela.

	==~~Usage~~==
	~~The luminous intensity for monochromatic light of a particular wavelength~~ &~~lambda; is given by~~

	~~:<math>I_\mathrm{v}~~ = ~~683 \cdot \overline{y}(\lambda) \cdot I_\mathrm{e},</math>~~

	~~where~~

	:~~''I''<sub>v</sub> is the luminous intensity in candelas (cd),~~
	~~:''I''<sub>e</sub> is the radiant intensity in watts per steradian (W~~/~~sr),~~
	~~:<math>\textstyle \overline{y}(\lambda)<~~/~~math> is the [[Luminosity function\|standard luminosity function]]~~.

	~~If more than one wavelength is present (as is usually the case), one must sum or integrate over the [[spectrum]] of wavelengths present to get the luminous intensity:~~

	~~<!-- TBD: Is integral from 0 to infinity really correct, or should it better be 380nm to 780nm here? -->~~
	~~:<math>I_\mathrm{v} = 683 \int^\infin_0 \overline{y}(\lambda) \cdot \frac{dI_\mathrm{e}(\lambda)}{d\lambda} \, d\lambda.</math>~~

	~~==See also==~~
	*[[Radiance]]
	*[[Brightness]]

	~~==References==~~
	~~<references/>~~

	~~{{SI_light_units}}~~
	~~{{Use dmy dates\|date=September 2010}}~~
	~~<!--Category-->~~
	~~{{DEFAULTSORT:Luminous Intensity}}~~
	~~[[Category:Physical quantities]]~~
	~~[[Category:Photometry]~~]

en>Widr: Reverted edits by 109.239.92.107 (talk) to last version by Gilderien

2014-01-07T15:18:46Z

Reverted edits by 109.239.92.107 (talk) to last version by Gilderien

← Older revision		Revision as of 17:18, 7 January 2014
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	~~My name~~ is ~~Dorothy Dahlen but everybody calls me Dorothy~~. I'm from ~~Great Britain~~. I'~~m studying at~~ the ~~high school (final year)~~ and ~~I play~~ the ~~Harp for 9 years~~. ~~Usually I choose songs from my famous films~~ :D. <br>~~I have two sister~~. ~~I like Genealogy~~, ~~watching TV~~ (~~Doctor Who~~) and ~~Herping~~.<~~br><br~~>My web ~~page - [~~http://www.~~xfire~~.com/~~blog~~/~~anyawillcock~~/~~8059177 ear plugs~~]		{{See also\|Light intensity (disambiguation)}}
			In [[Photometry (optics)\|photometry]], '''luminous intensity''' is a measure of the [[wavelength]]-weighted [[Power (physics)\|power]] emitted by a [[light source]] in a particular direction per unit [[solid angle]], based on the [[luminosity function]], a standardized model of the sensitivity of the [[human eye]]. The [[SI]] unit of luminous intensity is the [[candela]] (cd), an [[SI base unit]].

			Photometry deals with the measurement of visible light as perceived by human eyes. The human eye can only see light in the [[visible spectrum]] and has different sensitivities to [[light]] of different wavelengths within the spectrum. When adapted for bright conditions ([[photopic vision]]), the eye is most sensitive to greenish-yellow light at 555 nm. Light with the same [[radiant intensity]] at other wavelengths has a lower luminous intensity. The curve which measures the response of the human eye to light is a defined standard, known as the [[luminosity function]]. This curve, denoted ''V''(λ) or <math>\textstyle \overline{y}(\lambda)</math>, is based on an average of widely differing experimental data from scientists using different measurement techniques. For instance, the measured responses of the eye to violet light varied by a factor of ten.

			==Relationship to other measures==
			Luminous intensity should not be confused with another photometric unit, [[luminous flux]], which is the total perceived power emitted in all directions. Luminous intensity is the perceived power ''per unit solid angle''. If a lamp has a 1 lumen bulb and the optics of the lamp are set up to focus the light evenly into a 1 [[steradian]] beam, then the beam would have a luminous intensity of 1 candela. If the optics were changed to concentrate the beam into 1/2 steradian then the source would have a luminous intensity of 2 candela. The resulting beam is narrower and brighter, though its luminous flux remains unchanged.

			Luminous intensity is also not the same as the [[radiant intensity]], the corresponding objective [[physical quantity]] used in the measurement science of [[radiometry]].

			==Units==
			Like other SI base units, the candela has an [[operational definition]]—it is defined by the description of a physical process that will produce one candela of luminous intensity. By definition, if one constructs a light source that emits monochromatic green light with a frequency of 540 THz, and that has a radiant intensity of 1/683 [[watt]]s per [[steradian]] in a given direction, that light source will emit one candela in the specified direction.<ref>{{Cite web
			\| title = Base unit definitions: Candela
			\| work = The NIST Reference on Constants, Units, and Uncertainty
			\| url = http://physics.nist.gov/cuu/Units/candela.html
			\| accessdate = 8 February 2008
			}}</ref>

			The frequency of light used in the definition corresponds to a wavelength of 555 nm, which is near the peak of the eye's response to light. If the source emitted uniformly in all directions, the total [[radiant flux]] would be about 18.40 mW, since there are 4π steradians in a sphere. A typical candle produces very roughly one candela of luminous intensity.

			Prior to the definition of the candela, variety of units for luminous intensity were used in various countries. These were typically based on the brightness of the flame from a "standard candle" of defined composition, or the brightness of an incandescent filament of specific design. One of the best-known of these standards was the [[England\|English]] standard: [[candlepower]]. One candlepower was the light produced by a pure [[spermaceti]] candle weighing one sixth of a pound and burning at a rate of 120 [[Grain (mass)\|grains]] per hour. Germany, Austria, and Scandinavia used the [[Hefnerkerze]], a unit based on the output of a [[Hefner lamp]].<ref>{{Cite web\|url=http://www.sizes.com/units/hefner.htm \|title=Hefner unit, or Hefner candle \|work=Sizes.com \|date=30 May 2007 \|accessdate=25 February 2009}}</ref> In 1881, [[Jules Violle]] proposed the ''[[Violle]]'' as a unit of luminous intensity, and it was notable as the first unit of light intensity that did not depend on the properties of a particular lamp. All of these units were superseded by the definition of the candela.

			==Usage==
			The luminous intensity for monochromatic light of a particular wavelength λ is given by

			:<math>I_\mathrm{v} = 683 \cdot \overline{y}(\lambda) \cdot I_\mathrm{e},</math>

			where

			:''I''<sub>v</sub> is the luminous intensity in candelas (cd),
			:''I''<sub>e</sub> is the radiant intensity in watts per steradian (W/sr),
			:<math>\textstyle \overline{y}(\lambda)</math> is the [[Luminosity function\|standard luminosity function]].

			If more than one wavelength is present (as is usually the case), one must sum or integrate over the [[spectrum]] of wavelengths present to get the luminous intensity:

			<!-- TBD: Is integral from 0 to infinity really correct, or should it better be 380nm to 780nm here? -->
			:<math>I_\mathrm{v} = 683 \int^\infin_0 \overline{y}(\lambda) \cdot \frac{dI_\mathrm{e}(\lambda)}{d\lambda} \, d\lambda.</math>

			==See also==
			*[[Radiance]]
			*[[Brightness]]

			==References==
			<references/>

			{{SI_light_units}}
			{{Use dmy dates\|date=September 2010}}
			<!--Category-->
			{{DEFAULTSORT:Luminous Intensity}}
			[[Category:Physical quantities]]
			[[Category:Photometry]]

35.8.85.184: /* Irregular items */

2012-08-09T17:47:58Z

Irregular items

New page

My name is Dorothy Dahlen but everybody calls me Dorothy. I'm from Great Britain. I'm studying at the high school (final year) and I play the Harp for 9 years. Usually I choose songs from my famous films :D. <br>I have two sister. I like Genealogy, watching TV (Doctor Who) and Herping.<br><br>My web page - [http://www.xfire.com/blog/anyawillcock/8059177 ear plugs]