Refraction - Revision history

Divenal: /* Index of Refraction */ trivial - don't repeat "degree" in adjacent sentences.

2020-06-12T08:54:09Z

Index of Refraction: trivial - don't repeat "degree" in adjacent sentences.

← Older revision		Revision as of 08:54, 12 June 2020
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	== Index of Refraction ==		== Index of Refraction ==

	The '''Refractive Index''' (or '''Index of Refraction''') of a material is the degree to which the speed of light is reduced in that material, relative to vacuum. The ~~degree~~ (and direction) of the bending at the interface is dictated by the relative values of the Refractive Indices.		The '''Refractive Index''' (or '''Index of Refraction''') of a material is the degree to which the speed of light is reduced in that material, relative to vacuum. The amount (and direction) of the bending at the interface is dictated by the relative values of the Refractive Indices.

	The Refractive Index of air is close to 1 ; that of glass is around 1.5. The higher the Refractive Index, the thinner a lens needs to be in order to achieve a given [[Focal Length]]. Higher refractive index is not always better however, the Refractive Index typically varies depending on the wavelength of light, which means that different colors of the spectrum will bend to different degrees, leading to [[Chromatic Aberration]].		The Refractive Index of air is close to 1 ; that of glass is around 1.5. The higher the Refractive Index, the thinner a lens needs to be in order to achieve a given [[Focal Length]]. Higher refractive index is not always better however, the Refractive Index typically varies depending on the wavelength of light, which means that different colors of the spectrum will bend to different degrees, leading to [[Chromatic Aberration]].

NottNott at 16:21, 11 June 2020

2020-06-11T16:21:29Z

← Older revision		Revision as of 16:21, 11 June 2020
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	~~{{Active discussion}}~~
	'''Refraction''' is the bending of light as it passes from one medium into another, and is the underlying mechanism by which a [[Lens]] is able to focus light.		'''Refraction''' is the bending of light as it passes from one medium into another, and is the underlying mechanism by which a [[Lens]] is able to focus light.

NottNott: Reverted edits by NottNott (talk) to last revision by Divenal

2020-06-11T15:48:35Z

Reverted edits by NottNott (talk) to last revision by Divenal

← Older revision		Revision as of 15:48, 11 June 2020
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			{{Active discussion}}
	'''Refraction''' is the bending of light as it passes from one medium into another, and is the underlying mechanism by which a [[Lens]] is able to focus light.		'''Refraction''' is the bending of light as it passes from one medium into another, and is the underlying mechanism by which a [[Lens]] is able to focus light.

NottNott: Text replacement - "{{Active discussion}}" to ""

2020-06-11T15:42:08Z

Text replacement - "{{Active discussion}}" to ""

← Older revision		Revision as of 15:42, 11 June 2020
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	~~{{Active discussion}}~~
	'''Refraction''' is the bending of light as it passes from one medium into another, and is the underlying mechanism by which a [[Lens]] is able to focus light.		'''Refraction''' is the bending of light as it passes from one medium into another, and is the underlying mechanism by which a [[Lens]] is able to focus light.

Divenal at 14:46, 11 June 2020

2020-06-11T14:46:06Z

← Older revision		Revision as of 14:46, 11 June 2020
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			{{Active discussion}}
	'''Refraction''' is the bending of light as it passes from one medium into another, and is the underlying mechanism by which a [[Lens]] is able to focus light.		'''Refraction''' is the bending of light as it passes from one medium into another, and is the underlying mechanism by which a [[Lens]] is able to focus light.

Dlskidmore: formatting

2020-06-11T04:12:00Z

formatting

← Older revision		Revision as of 04:12, 11 June 2020
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			'''Refraction''' is the bending of light as it passes from one medium into another, and is the underlying mechanism by which a [[Lens]] is able to focus light.

	== Index of Refraction ==		== Index of Refraction ==

	~~'''Refraction''' is the bending of light as it passes from one medium into another, and is the underlying mechanism by which a [[Lens]] is able to focus light.~~ The '''Refractive Index''' (or '''Index of Refraction''') of a material is the degree to which the speed of light is reduced in that material, relative to vacuum. The degree (and direction) of the bending at the interface is dictated by the relative values of the Refractive Indices.		The '''Refractive Index''' (or '''Index of Refraction''') of a material is the degree to which the speed of light is reduced in that material, relative to vacuum. The degree (and direction) of the bending at the interface is dictated by the relative values of the Refractive Indices.

	~~The Refractive Index of air is close to 1 ; that of glass is around 1.5. The higher the Refractive Index, the thinner a lens needs to be in order to achieve a given [[Focal Length]]~~.

	The Refractive Index typically varies depending on the wavelength of light, which means that different colors of the spectrum will bend to different degrees, leading to [[Chromatic Aberration]].		The Refractive Index of air is close to 1 ; that of glass is around 1.5. The higher the Refractive Index, the thinner a lens needs to be in order to achieve a given [[Focal Length]]. Higher refractive index is not always better however, the Refractive Index typically varies depending on the wavelength of light, which means that different colors of the spectrum will bend to different degrees, leading to [[Chromatic Aberration]].

	There is also an element of reflection at the boundary between two media. (Think of how a window into a dark room acts as a mirror on a bright day.) This can be reduced using an '''Anti Reflective Coating''' - a thin film of a material with a Refractive Index of an intermediate value.		There is also an element of reflection at the boundary between two media. (Think of how a window into a dark room acts as a mirror on a bright day.) This can be reduced using an '''Anti Reflective Coating''' - a thin film of a material with a Refractive Index of an intermediate value.

Dlskidmore: a little more fluff, cross link to related topics

2020-06-11T02:24:51Z

a little more fluff, cross link to related topics

← Older revision		Revision as of 02:24, 11 June 2020
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	== Trial Refraction ==		== Trial Refraction ==
	The term Refraction (and also ''Refractrometry'') is also used as the study of the [[Refractive state]] of the eye, by which an [[optometrist]] determines your [[~~prescription~~]].		The term Refraction (and also ''Refractrometry'') is also used as the study of the [[Refractive state]] of the eye, by which an [[optometrist]] determines your ideal [[correction]] for "best corrected [[visual acuity]]". You can do your own trial refraction at home with a [[trial lens kit]].

	[[Category:Articles]]		[[Category:Articles]]

Dlskidmore: headers

2020-06-11T02:22:05Z

headers

← Older revision		Revision as of 02:22, 11 June 2020
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			== Index of Refraction ==

	'''Refraction''' is the bending of light as it passes from one medium into another, and is the underlying mechanism by which a [[Lens]] is able to focus light. The '''Refractive Index''' (or '''Index of Refraction''') of a material is the degree to which the speed of light is reduced in that material, relative to vacuum. The degree (and direction) of the bending at the interface is dictated by the relative values of the Refractive Indices.		'''Refraction''' is the bending of light as it passes from one medium into another, and is the underlying mechanism by which a [[Lens]] is able to focus light. The '''Refractive Index''' (or '''Index of Refraction''') of a material is the degree to which the speed of light is reduced in that material, relative to vacuum. The degree (and direction) of the bending at the interface is dictated by the relative values of the Refractive Indices.

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	There is also an element of reflection at the boundary between two media. (Think of how a window into a dark room acts as a mirror on a bright day.) This can be reduced using an '''Anti Reflective Coating''' - a thin film of a material with a Refractive Index of an intermediate value.		There is also an element of reflection at the boundary between two media. (Think of how a window into a dark room acts as a mirror on a bright day.) This can be reduced using an '''Anti Reflective Coating''' - a thin film of a material with a Refractive Index of an intermediate value.

			== Trial Refraction ==
	The term Refraction (and also ''Refractrometry'') is also used as the study of the [[Refractive state]] of the eye, by which an [[optometrist]] determines your [[prescription]].		The term Refraction (and also ''Refractrometry'') is also used as the study of the [[Refractive state]] of the eye, by which an [[optometrist]] determines your [[prescription]].

	[[Category:Articles]]		[[Category:Articles]]

Viceroy Sam: added Category:Articles using HotCat

2020-06-08T14:26:40Z

added Category:Articles using HotCat

← Older revision		Revision as of 14:26, 8 June 2020
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	The term Refraction (and also ''Refractrometry'') is also used as the study of the [[Refractive state]] of the eye, by which an [[optometrist]] determines your [[prescription]].		The term Refraction (and also ''Refractrometry'') is also used as the study of the [[Refractive state]] of the eye, by which an [[optometrist]] determines your [[prescription]].

			[[Category:Articles]]

Divenal: linkify Lens

2020-06-03T21:54:47Z

linkify Lens

← Older revision		Revision as of 21:54, 3 June 2020
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	'''Refraction''' is the bending of light as it passes from one medium into another, and is the underlying mechanism by which a ~~lens~~ is able to focus light. The '''Refractive Index''' (or '''Index of Refraction''') of a material is the degree to which the speed of light is reduced in that material, relative to vacuum. The degree (and direction) of the bending at the interface is dictated by the relative values of the Refractive Indices.		'''Refraction''' is the bending of light as it passes from one medium into another, and is the underlying mechanism by which a [[Lens]] is able to focus light. The '''Refractive Index''' (or '''Index of Refraction''') of a material is the degree to which the speed of light is reduced in that material, relative to vacuum. The degree (and direction) of the bending at the interface is dictated by the relative values of the Refractive Indices.

	The Refractive Index of air is close to 1 ; that of glass is around 1.5. The higher the Refractive Index, the thinner a lens needs to be in order to achieve a given [[Focal Length]].		The Refractive Index of air is close to 1 ; that of glass is around 1.5. The higher the Refractive Index, the thinner a lens needs to be in order to achieve a given [[Focal Length]].