Luminous Intensity - Revision history

Minsuids: Dictionary clean-up: identifier → urn:mrn:iala:dic:2-1-0035

2026-09-17T09:15:31Z

Dictionary clean-up: identifier → urn:mrn:iala:dic:2-1-0035

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	'''2-1-~~035~~		'''urn:mrn:iala:dic:2-1-0035'''

	Luminous Intensity (of a source, in a given direction) - The quotient of the luminous flux (dF) leaving the source, propagated in an element of solid angle containing the given direction, by the element of solid angle (dO). Luminous intensity is expressed in candelas.		Luminous Intensity (of a source, in a given direction) - The quotient of the luminous flux (dF) leaving the source, propagated in an element of solid angle containing the given direction, by the element of solid angle (dO). Luminous intensity is expressed in candelas.

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	'''2-1-035		'''2-1-035

	Luminous Intensity (of a source, in a given direction)		Luminous Intensity (of a source, in a given direction) - The quotient of the luminous flux (dF) leaving the source, propagated in an element of solid angle containing the given direction, by the element of solid angle (dO). Luminous intensity is expressed in candelas.

	The quotient of the luminous flux (dF) leaving the source, propagated in an element of solid angle containing the given direction, by the element of solid angle (dO).

	[[Image:Ch2_Fig1.jpg\|400px\|border]]		[[Image:Ch2_Fig1.jpg\|400px\|border]]

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	[[Category:Alphabetical Index]]		[[Category:Alphabetical Index]]
	[[Category:IALA Dictionary 1970-89 Edition]]		[[Category:IALA Dictionary 1970-89 Edition]]
			[[Category:IALA Dictionary 2023 Revision]]

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	The quotient of the luminous flux (dF) leaving the source, propagated in an element of solid angle containing the given direction, by the element of solid angle (dO).		The quotient of the luminous flux (dF) leaving the source, propagated in an element of solid angle containing the given direction, by the element of solid angle (dO).

	[[Image:Ch2_Fig1.jpg\|400px]]		[[Image:Ch2_Fig1.jpg\|400px\|border]]

Oferiks: 1 revision

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Oferiks at 12:00, 15 February 2009

2009-02-15T12:00:00Z

New page

'''2-1-035

Luminous Intensity (of a source, in a given direction)

The quotient of the luminous flux (dF) leaving the source, propagated in an element of solid angle containing the given direction, by the element of solid angle (dO).

[[Image:Ch2_Fig1.jpg|400px]]

Symbol: I

Unit: candela(cd)

Reference: C.I.E. (modified)

Note 1: If within a cone of finite solid angle O the luminous flux may be considered uniformly distributed, then the luminous intensity is given by

(Equation)

where F is the total luminous flux emitted within the solid angle.

Note 2: The term Candlepower designates a luminous intensity expressed in candelas.

{{IALAFooter}}

{{languages|Luminous Intensity}}
[[Category:2.1 Optics and Vision]]
[[Category:Alphabetical Index]]
[[Category:IALA Dictionary 1970-89 Edition]]