Colour in the built environment - Revision history

Editor at 18:24, 1 December 2021

2021-12-01T18:24:07Z

← Older revision		Revision as of 18:24, 1 December 2021
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	* Magenta + cyan = blue		* Magenta + cyan = blue

−	= Related articles on Designing Buildings ~~Wiki~~ =	+	= Related articles on Designing Buildings =

	* Colour Rendering Index CRI.		* Colour Rendering Index CRI.
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	* Dichroic reflector.		* Dichroic reflector.
	* Discharge lamp.		* Discharge lamp.
		+	* Electromagnetic spectrum.
	* Extra-low voltage lamps.		* Extra-low voltage lamps.
	* General lighting v task lighting.		* General lighting v task lighting.

Designing Buildings at 09:31, 12 December 2020

2020-12-12T09:31:10Z

← Older revision		Revision as of 09:31, 12 December 2020
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	* Visible light.		* Visible light.

−	[[Category:Theory]] [[Category:Design]]	+	[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:Theory]] [[Category:Design]]

Editor at 18:00, 21 May 2020

2020-05-21T18:00:22Z

← Older revision		Revision as of 18:00, 21 May 2020
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	{\|		{\|
−	\| [[File:~~Thermal wavelengths of the electromagnetic spectrum~~.jpg]]	+	\| [[File:Thermal_wavelengths_of_the_electromagnetic_spectrum.jpg\|link=File:Thermal_wavelengths_of_the_electromagnetic_spectrum.jpg]]
	\|-		\|-
	\| The full electromagnetic spectrum. Visible light falls within the range of wavelengths from approximately 380 - 740 nanometers (nm), between the infrared and ultraviolet wavebands.		\| The full electromagnetic spectrum. Visible light falls within the range of wavelengths from approximately 380 - 740 nanometers (nm), between the infrared and ultraviolet wavebands.
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	= Related articles on Designing Buildings Wiki =		= Related articles on Designing Buildings Wiki =

		+	* Colour Rendering Index CRI.
	* Daylight benefits in healthcare buildings.		* Daylight benefits in healthcare buildings.
	* Daylight factor.		* Daylight factor.

Designing Buildings: moved Colour to Colour in the built environment

2020-01-29T07:08:29Z

moved Colour to Colour in the built environment

← Older revision

Revision as of 07:08, 29 January 2020

Designing Buildings at 14:50, 3 July 2019

2019-07-03T14:50:02Z

← Older revision		Revision as of 14:50, 3 July 2019
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−	[[File:Swatch-~~1086730 640~~.jpg]]	+	[[File:Swatch-1086730_640.jpg\|link=File:Swatch-1086730_640.jpg]]

	Everything that an individual perceives visually that is not to do with their perception of shape, size, surface texture, tone and motion of objects can be termed ‘colour’. Excluding colour-blind people, everything that we see has some colour associated with it. Some substances, such as oxygen, are colourless.		Everything that an individual perceives visually that is not to do with their perception of shape, size, surface texture, tone and motion of objects can be termed ‘colour’. Excluding colour-blind people, everything that we see has some colour associated with it. Some substances, such as oxygen, are colourless.
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	Visual light comprises a wide range of different colours which can be seen by using a prism to split it into its constituent colours. This range of colours is called a ‘spectrum’ and the colours, each with a different wavelength, are always in the same order, from red at one end through orange, yellow, green, blue, indigo to violet at the other end. Red is associated with long waves, green with medium-length and blue with short waves.		Visual light comprises a wide range of different colours which can be seen by using a prism to split it into its constituent colours. This range of colours is called a ‘spectrum’ and the colours, each with a different wavelength, are always in the same order, from red at one end through orange, yellow, green, blue, indigo to violet at the other end. Red is associated with long waves, green with medium-length and blue with short waves.
		+
		+	{\|
		+	\| [[File:Thermal wavelengths of the electromagnetic spectrum.jpg]]
		+	\|-
		+	\| The full electromagnetic spectrum. Visible light falls within the range of wavelengths from approximately 380 - 740 nanometers (nm), between the infrared and ultraviolet wavebands.
		+	\|}

	In reality, there are many, many different colours in the spectral range because it is seamless, as one colour gradually merges into the next. Each colour has its own wavelength of light which stimulates the cone cells (colour receptors) in the human eye in a different way to produce the various sensations of colour. So, when we say that ‘the banana is yellow’, it would be more accurate to say that a sensation of yellow is generated by an area of the retina (at the back of the eye) that corresponds to where light rays from the banana are being received.		In reality, there are many, many different colours in the spectral range because it is seamless, as one colour gradually merges into the next. Each colour has its own wavelength of light which stimulates the cone cells (colour receptors) in the human eye in a different way to produce the various sensations of colour. So, when we say that ‘the banana is yellow’, it would be more accurate to say that a sensation of yellow is generated by an area of the retina (at the back of the eye) that corresponds to where light rays from the banana are being received.
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	= Related articles on Designing Buildings Wiki =		= Related articles on Designing Buildings Wiki =

−	* Ballast or control gear.
	* Daylight benefits in healthcare buildings.		* Daylight benefits in healthcare buildings.
	* Daylight factor.		* Daylight factor.
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	* Rights to light.		* Rights to light.
	* The Anatomy of Colour.		* The Anatomy of Colour.
		+	* Visible light.

	[[Category:Theory]] [[Category:Design]]		[[Category:Theory]] [[Category:Design]]

Designing Buildings at 14:47, 3 July 2019

2019-07-03T14:47:37Z

← Older revision		Revision as of 14:47, 3 July 2019
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−	Everything that an individual perceives visually that is not to do with their perception of shape, size, surface texture and motion of objects can be termed ‘colour’. Excluding colour-blind people, everything that we see has some colour associated with it. Some substances, such as ~~air~~, are colourless.	+	[[File:Swatch-1086730 640.jpg]]
		+
		+	Everything that an individual perceives visually that is not to do with their perception of shape, size, surface texture, tone and motion of objects can be termed ‘colour’. Excluding colour-blind people, everything that we see has some colour associated with it. Some substances, such as oxygen, are colourless.

	For colour to be perceived or to cause a sensation of colour, the following conditions must be satisfied:		For colour to be perceived or to cause a sensation of colour, the following conditions must be satisfied:

−	* Light of a certain wavelength must be reflected ~~off the~~ object ~~(the~~ wavelength will determine whether that colour is green, red or blue or a combination of these), and	+	* Light (a form of electromagnetic radiation) of a certain wavelength must be emitted, transmitted or reflected by an object. The wavelength will determine whether that colour is green, red or blue or a combination of these, and
	* A properly functioning physiological system must be possessed by the individual to allow colour to be perceived.		* A properly functioning physiological system must be possessed by the individual to allow colour to be perceived.

−	Colour can only be perceived due to the presence of light and most light sources produce different light wave combinations~~. The colours we know are associated with different wavelengths of light: red is associated with long waves, green with medium-length and blue with short waves~~.	+	Colour can only be perceived due to the presence of light and most light sources produce different light wave combinations.

−	~~Normal~~ light comprises a wide range of different colours which can be seen by using a prism to split it into its ~~visible~~ constituent colours. This range of colours is called a ‘spectrum’ and the colours, each with a different wavelength, are always in the same order, from red at one end through orange, yellow, green, blue, indigo to violet at the other end.	+	Visual light comprises a wide range of different colours which can be seen by using a prism to split it into its constituent colours. This range of colours is called a ‘spectrum’ and the colours, each with a different wavelength, are always in the same order, from red at one end through orange, yellow, green, blue, indigo to violet at the other end. Red is associated with long waves, green with medium-length and blue with short waves.

−	In reality, there are many, many different colours in the spectral range because it is seamless, as one colour gradually merges into the next. Each colour has its own wavelength of light which stimulates the cone cells (colour receptors) in the human eye ~~(by electromagnetic radiation)~~ in a different way to produce the various sensations of colour.	+	In reality, there are many, many different colours in the spectral range because it is seamless, as one colour gradually merges into the next. Each colour has its own wavelength of light which stimulates the cone cells (colour receptors) in the human eye in a different way to produce the various sensations of colour. So, when we say that ‘the banana is yellow’, it would be more accurate to say that a sensation of yellow is generated by an area of the retina (at the back of the eye) that corresponds to where light rays from the banana are being received.
−		+
−	So, when we say that ‘the banana is yellow’, it would be more accurate to say that a sensation of yellow is generated by an area of the retina (at the back of the eye) that corresponds to where light rays from the banana are being received.	+

	= Primary colours =		= Primary colours =
−
−	~~These are colours that can be mixed – whether they are visible light or pigments – to create other colours.~~

	White light contains three primary colours: red, green and blue. These colours are ‘primary’ as they are colours in their own right and cannot be replicated by mixing other colours of light. When the three are recombined, they yield white light – a process called ‘additive colour’ which is used in projectors and computer monitors. They can be combined to create any other colour (except black) and are also referred to as ‘spectral’ colours. When combined the result is:		White light contains three primary colours: red, green and blue. These colours are ‘primary’ as they are colours in their own right and cannot be replicated by mixing other colours of light. When the three are recombined, they yield white light – a process called ‘additive colour’ which is used in projectors and computer monitors. They can be combined to create any other colour (except black) and are also referred to as ‘spectral’ colours. When combined the result is:
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	= Subtractive primary colours =		= Subtractive primary colours =

−	In pigments, dyes and inks the primary colours are usually considered to be red, blue and yellow. These can be mixed to produce any other colour and are known as subtractive primary colours because each colour that is a combination is the result of subtracting (or absorbing) from white light – whether partially or completely – some wavelengths of light and not others~~. In other words, it is the creation of colour by subtraction~~. This is used by painters ~~(red, yellow and blue)~~ and printers ~~(magenta, yellow and cyan)~~. If all three colours are mixed, a black colour is created. By mixing the basic ~~material~~ colours (cyan, magenta and yellow), the result is:	+	In pigments, dyes and inks the primary colours are usually considered to be red, blue and yellow. These can be mixed to produce any other colour and are known as subtractive primary colours because each colour that is a combination is the result of subtracting (or absorbing) from white light – whether partially or completely – some wavelengths of light and not others. This is used by painters and printers. If all three colours are mixed, a black colour is created. By mixing the basic printer colours (cyan, magenta and yellow), the result is:

	* Yellow + magenta = red		* Yellow + magenta = red

Editor: Created page with "Everything that an individual perceives visually that is not to do with their perception of shape, size, surface texture and motion of objects can be termed ‘colour’. Excludi..."

2019-06-20T16:59:39Z

Created page with "Everything that an individual perceives visually that is not to do with their perception of shape, size, surface texture and motion of objects can be termed ‘colour’. Excludi..."

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Everything that an individual perceives visually that is not to do with their perception of shape, size, surface texture and motion of objects can be termed ‘colour’. Excluding colour-blind people, everything that we see has some colour associated with it. Some substances, such as air, are colourless.

For colour to be perceived or to cause a sensation of colour, the following conditions must be satisfied:

* Light of a certain wavelength must be reflected off the object (the wavelength will determine whether that colour is green, red or blue or a combination of these), and
* A properly functioning physiological system must be possessed by the individual to allow colour to be perceived.

Colour can only be perceived due to the presence of light and most light sources produce different light wave combinations. The colours we know are associated with different wavelengths of light: red is associated with long waves, green with medium-length and blue with short waves.

Normal light comprises a wide range of different colours which can be seen by using a prism to split it into its visible constituent colours. This range of colours is called a ‘spectrum’ and the colours, each with a different wavelength, are always in the same order, from red at one end through orange, yellow, green, blue, indigo to violet at the other end.

In reality, there are many, many different colours in the spectral range because it is seamless, as one colour gradually merges into the next. Each colour has its own wavelength of light which stimulates the cone cells (colour receptors) in the human eye (by electromagnetic radiation) in a different way to produce the various sensations of colour.

So, when we say that ‘the banana is yellow’, it would be more accurate to say that a sensation of yellow is generated by an area of the retina (at the back of the eye) that corresponds to where light rays from the banana are being received.

= Primary colours =

These are colours that can be mixed – whether they are visible light or pigments – to create other colours.

White light contains three primary colours: red, green and blue. These colours are ‘primary’ as they are colours in their own right and cannot be replicated by mixing other colours of light. When the three are recombined, they yield white light – a process called ‘additive colour’ which is used in projectors and computer monitors. They can be combined to create any other colour (except black) and are also referred to as ‘spectral’ colours. When combined the result is:

* Green + red = yellow
* Blue + red = magenta
* Blue + green = cyan

= Subtractive primary colours =

In pigments, dyes and inks the primary colours are usually considered to be red, blue and yellow. These can be mixed to produce any other colour and are known as subtractive primary colours because each colour that is a combination is the result of subtracting (or absorbing) from white light – whether partially or completely – some wavelengths of light and not others. In other words, it is the creation of colour by subtraction. This is used by painters (red, yellow and blue) and printers (magenta, yellow and cyan). If all three colours are mixed, a black colour is created. By mixing the basic material colours (cyan, magenta and yellow), the result is:

* Yellow + magenta = red
* Yellow + cyan = green
* Magenta + cyan = blue

= Related articles on Designing Buildings Wiki =

* Ballast or control gear.
* Daylight benefits in healthcare buildings.
* Daylight factor.
* Daylight lighting systems.
* Dichroic reflector.
* Discharge lamp.
* Extra-low voltage lamps.
* General lighting v task lighting.
* Illuminance.
* Lamps.
* Lamp efficacy.
* Light pollution.
* Lighting.
* Lighting energy numeric indicator LENI.
* Lighting of construction sites.
* Luminaire efficacy.
* Rights to light.
* The Anatomy of Colour.

[[Category:Theory]] [[Category:Design]]