Sundial - Revision history

Editor at 06:03, 18 September 2022

2022-09-18T06:03:25Z

← Older revision		Revision as of 06:03, 18 September 2022
Line 21:		Line 21:
	* [https://www.sundialzone.com/en/sundial https://www.sundialzone.com/en/sundial]		* [https://www.sundialzone.com/en/sundial https://www.sundialzone.com/en/sundial]
	* [https://www.sunearthtools.com/solar/build-sundial.php#top https://www.sunearthtools.com/solar/build-sundial.php#top]		* [https://www.sunearthtools.com/solar/build-sundial.php#top https://www.sunearthtools.com/solar/build-sundial.php#top]
		+	* [http://www.anselmi.vda.it/home.htm# http://www.anselmi.vda.it/home.htm#]

	= Related articles on Designing Buildings =		= Related articles on Designing Buildings =

Editor at 08:56, 22 July 2022

2022-07-22T08:56:01Z

← Older revision		Revision as of 08:56, 22 July 2022
Line 20:		Line 20:
	* [https://www.shadowspro.com/en/sundials.html https://www.shadowspro.com/en/sundials.html]		* [https://www.shadowspro.com/en/sundials.html https://www.shadowspro.com/en/sundials.html]
	* [https://www.sundialzone.com/en/sundial https://www.sundialzone.com/en/sundial]		* [https://www.sundialzone.com/en/sundial https://www.sundialzone.com/en/sundial]
		+	* [https://www.sunearthtools.com/solar/build-sundial.php#top https://www.sunearthtools.com/solar/build-sundial.php#top]

	= Related articles on Designing Buildings =		= Related articles on Designing Buildings =

Designing Buildings at 11:17, 8 July 2022

2022-07-08T11:17:31Z

← Older revision		Revision as of 11:17, 8 July 2022
Line 1:		Line 1:
	[[File:Sundial_mix.jpg\|link=File:Sundial_mix.jpg]]		[[File:Sundial_mix.jpg\|link=File:Sundial_mix.jpg]]

−	A sundial is an instrument used to show the time of day~~, it~~ does so using a spike or triangle (a gnomon) that protrudes from a horizontal or vertical plate, ~~creating~~ a shadow which indicates the time. It is one of the earliest devices relating to the study of time (horology) and was used by the ancient Egyptians and Babylonians (1500 BC). The art or science of constructing sundials is called this gnomonics, named after the central part used to cast the shadow.	+	A sundial is an instrument used to show the time of day. It does so using a spike or triangle (a gnomon) that protrudes from a horizontal or vertical plate, casting a shadow which indicates the time. It is one of the earliest devices relating to the study of time (horology) and was used by the ancient Egyptians and Babylonians (1500 BC). The art or science of constructing sundials is called this gnomonics, named after the central part used to cast the shadow.

−	Solar time is derived from the Sun's position, by counting one hour of time every 15° of hour angle, as Earth is rotating around its axis in 24 hours, which gives 360°/24 h = 15°/hour. On a sundial, the noon line corresponds to the moment of culmination of the Sun, when it crosses the local meridian. This sort of time depends on the location or longitude. The designer must calculate a longitude correction for a given location, by comparing the longitude to the reference meridian (CET meridian is 15° East), the time~~,by example~~ in Exeter, Devon might be up to 15 minutes later than that ~~of Greenwhich at certain points~~. So sundials are based on the equation of time plus a longitudinal correction.	+	Solar time is derived from the Sun's position, by counting one hour of time every 15° of hour angle, as Earth is rotating around its axis once every 24 hours, which gives 360°/24 h = 15°/hour. On a sundial, the noon line corresponds to the moment of culmination of the Sun, when it crosses the local meridian. This sort of time depends on the location or longitude. The designer must calculate a longitude correction for a given location, by comparing the longitude to the reference meridian (CET meridian is 15° East). For example, the time in Exeter, Devon might be up to 15 minutes later than that in Greenwich. So sundials are based on the equation of time plus a longitudinal correction.

−	In the UK, the world heritage site, Stonehenge, built in the Neolithic period (2500 BC), is a form of sundial with each of the 30 upright stones representing one day within a repeating 30-day month. Twelve rotations of the Circle equates to 12 months, forming a solar year (which is 365 days, not 360).	+	In the UK, the world heritage site, Stonehenge, built in the Neolithic period (2500 BC), is thought to be a form of sundial with each of the 30 upright stones representing one day within a repeating 30-day month. Twelve rotations of the Circle equates to 12 months, forming a solar year (which is 365 days, not 360).

−	The oldest sundials measuring shorter time cycles to be found in the UK are the tide dial of Bewcastle Cross, Cumbria, dating from the 7th century, and the Boyne Valley sundial in Ireland, a sundial stone believed to be over 5000 years old~~, along with others. A tide, mass or scratch dial is a type of sundial that has the canonical hours instead or in addition to the standard hours of daylight marked~~.	+	The oldest sundials measuring shorter time cycles to be found in the UK are the tide dial of Bewcastle Cross, Cumbria, dating from the 7th century, and the Boyne Valley sundial in Ireland, a sundial stone believed to be over 5000 years old.

−	~~Today sundials can be found as features of historical buildings and landscapes~~, ~~often as single horizontal standalone features in gardens~~ or ~~incorporated into building facades as vertical sundials. A map showing sundials~~ of ~~interest around~~ the ~~UK can be viewed via The British Sundial Society, along with history, guidance and advice. Sundials can also be added as interesting features~~ to ~~modern homes or as home educational design projects, guidance given below~~.	+	A tide, mass or scratch dial is a type of sundial that has the canonical hours instead or in addition to the standard hours of daylight marked.

−	~~= External Links =~~	+	Today sundials can be found as features of historical buildings and landscapes, often as single horizontal standalone features in gardens or incorporated into building facades as vertical sundials. Sundials can also be added as interesting features to modern homes or as home educational design projects.

−	~~[https://sundialsoc~~.~~org.uk/dials-filter/ https://sundialsoc.org.uk/dials-filter/]~~	+	A map showing sundials of interest around the UK can be viewed via The British Sundial Society, along with history, guidance and advice.

−	~~[https://www.shadowspro.com/en/sundials.html https://www.shadowspro.com/en/sundials.html]~~	+	= External links =

−	[https://www.sundialzone.com/en/sundial https://www.sundialzone.com/en/sundial]	+	* [https://sundialsoc.org.uk/dials-filter/ https://sundialsoc.org.uk/dials-filter/]
		+	* [https://www.shadowspro.com/en/sundials.html https://www.shadowspro.com/en/sundials.html]
		+	* [https://www.sundialzone.com/en/sundial https://www.sundialzone.com/en/sundial]

	= Related articles on Designing Buildings =		= Related articles on Designing Buildings =

−	* Conservation area.
−	* Conservation officer.
	* Brise soleil.		* Brise soleil.
	* Designing daylight solutions for commercial buildings.		* Designing daylight solutions for commercial buildings.
−	* 'England's Post-War Listed Buildings'.
−	* EN 17037 Daylight in buildings.
−	* G-value.
−	* Heritage at Risk Register.
−	* Guidance on Alterations to Listed Buildings.
	* Historic England.		* Historic England.
	* Listed Building Heritage Partnership Agreements.		* Listed Building Heritage Partnership Agreements.
−	* Local Listed Building Consent Orders.
−	* Local interest list.
	* Large scale solar thermal energy.		* Large scale solar thermal energy.
−	* Low-e glass.
−	* Natural ventilation.
−	* Part L.
	* Passive building design.		* Passive building design.
	* Protection of historic statues, plaques, memorials and monuments.		* Protection of historic statues, plaques, memorials and monuments.
	* Scheduled monuments.		* Scheduled monuments.
−	* Shading coefficient.
−	* Solar chimney.
	* Solar photovoltaics.		* Solar photovoltaics.
−	* Thermal optical properties.
−	* Trombe wall.
−	* The history of listed buildings.
−	* Urban heat island effect.
	* Visible light.		* Visible light.

	[[Category:DCN_Definition]] [[Category:DCN_Product_Knowledge]] [[Category:Definitions]] [[Category:History]] [[Category:Products_/_components]]		[[Category:DCN_Definition]] [[Category:DCN_Product_Knowledge]] [[Category:Definitions]] [[Category:History]] [[Category:Products_/_components]]

Editor at 19:35, 5 July 2022

2022-07-05T19:35:35Z

← Older revision		Revision as of 19:35, 5 July 2022
Line 1:		Line 1:
−	[[File:~~Sundial mix~~.jpg]]	+	[[File:Sundial_mix.jpg\|link=File:Sundial_mix.jpg]]

−	A sundial is an instrument used to show the time of day, it does so using a spike or triangle (a gnomon) that protrudes from a horizontal or vertical plate creating a shadow which indicates the time. ~~As such it~~ is one of the earliest devices ~~that relates~~ to the study of time (horology) and was used by the ancient Egyptians and Babylonians (1500 BC). The art or science of constructing sundials is called gnomonics, named after the ~~Gnomon which is~~ used to cast the shadow.	+	A sundial is an instrument used to show the time of day, it does so using a spike or triangle (a gnomon) that protrudes from a horizontal or vertical plate, creating a shadow which indicates the time. It is one of the earliest devices relating to the study of time (horology) and was used by the ancient Egyptians and Babylonians (1500 BC). The art or science of constructing sundials is called this gnomonics, named after the central part used to cast the shadow.

−	Solar time is derived from the Sun's position, by counting one hour of time every 15° of hour angle as Earth is rotating around its axis in 24 hours, which gives 360°/24 h = 15°/hour. On a sundial, the noon line corresponds to the moment of culmination of the Sun, when it crosses the local meridian~~. This line is always contained in the North-South plane and is always vertical on a vertical sundial, regardless of its orientation~~. This sort of time depends on the location or longitude. ~~One calculates~~ a longitude correction for a given location, by comparing the longitude to the reference meridian (CET meridian is 15° East), the time, ~~for~~ example in Exeter, Devon might be up to 15 minutes later than that of Greenwhich. So sundials are based on the equation of time plus a longitudinal correction.	+	Solar time is derived from the Sun's position, by counting one hour of time every 15° of hour angle, as Earth is rotating around its axis in 24 hours, which gives 360°/24 h = 15°/hour. On a sundial, the noon line corresponds to the moment of culmination of the Sun, when it crosses the local meridian. This sort of time depends on the location or longitude. The designer must calculate a longitude correction for a given location, by comparing the longitude to the reference meridian (CET meridian is 15° East), the time,by example in Exeter, Devon might be up to 15 minutes later than that of Greenwhich at certain points. So sundials are based on the equation of time plus a longitudinal correction.

−	In the UK, the world heritage site, ~~Stonhenge~~, built in the Neolithic period (2500 BC), is a form of sundial with each of the 30 upright stones representing one day within a repeating 30-day month~~, twelve~~ rotations of the Circle equates to 12 months, forming a solar year (which is 365 days, not 360). The oldest sundials measuring shorter time cycles to be found in the UK the a tide dial which is part of Bewcastle Cross, Cumbria, dating from the 7th century, and the Boyne Valley sundial in Ireland, a Sundial Stone believed to be over 5000 years old along with many others. A tide, mass or scratch dial is a type of sundial that has the canonical hours instead or in addition to the standard hours of daylight marked on it.	+	In the UK, the world heritage site, Stonehenge, built in the Neolithic period (2500 BC), is a form of sundial with each of the 30 upright stones representing one day within a repeating 30-day month. Twelve rotations of the Circle equates to 12 months, forming a solar year (which is 365 days, not 360).

−	Today sundials can be found as features of historical buildings and landscapes, often as single horizontal standalone features in gardens or incorporated into building facades as vertical sundials. A map showing sundials of interest around the UK can be viewed via The British Sundial Society, along with history, guidance and advice. Sundials can also be added as interesting features to modern homes or as home educational design projects.	+	The oldest sundials measuring shorter time cycles to be found in the UK are the tide dial of Bewcastle Cross, Cumbria, dating from the 7th century, and the Boyne Valley sundial in Ireland, a sundial stone believed to be over 5000 years old, along with others. A tide, mass or scratch dial is a type of sundial that has the canonical hours instead or in addition to the standard hours of daylight marked.
		+
		+	Today sundials can be found as features of historical buildings and landscapes, often as single horizontal standalone features in gardens or incorporated into building facades as vertical sundials. A map showing sundials of interest around the UK can be viewed via The British Sundial Society, along with history, guidance and advice. Sundials can also be added as interesting features to modern homes or as home educational design projects, guidance given below.

	= External Links =		= External Links =

Editor at 13:28, 5 July 2022

2022-07-05T13:28:23Z

← Older revision		Revision as of 13:28, 5 July 2022
Line 1:		Line 1:
		+	[[File:Sundial mix.jpg]]
		+
	A sundial is an instrument used to show the time of day, it does so using a spike or triangle (a gnomon) that protrudes from a horizontal or vertical plate creating a shadow which indicates the time. As such it is one of the earliest devices that relates to the study of time (horology) and was used by the ancient Egyptians and Babylonians (1500 BC). The art or science of constructing sundials is called gnomonics, named after the Gnomon which is used to cast the shadow.		A sundial is an instrument used to show the time of day, it does so using a spike or triangle (a gnomon) that protrudes from a horizontal or vertical plate creating a shadow which indicates the time. As such it is one of the earliest devices that relates to the study of time (horology) and was used by the ancient Egyptians and Babylonians (1500 BC). The art or science of constructing sundials is called gnomonics, named after the Gnomon which is used to cast the shadow.

Editor at 13:19, 5 July 2022

2022-07-05T13:19:10Z

← Older revision		Revision as of 13:19, 5 July 2022
Line 1:		Line 1:
	A sundial is an instrument used to show the time of day, it does so using a spike or triangle (a gnomon) that protrudes from a horizontal or vertical plate creating a shadow which indicates the time. As such it is one of the earliest devices that relates to the study of time (horology) and was used by the ancient Egyptians and Babylonians (1500 BC). The art or science of constructing sundials is called gnomonics, named after the Gnomon which is used to cast the shadow.		A sundial is an instrument used to show the time of day, it does so using a spike or triangle (a gnomon) that protrudes from a horizontal or vertical plate creating a shadow which indicates the time. As such it is one of the earliest devices that relates to the study of time (horology) and was used by the ancient Egyptians and Babylonians (1500 BC). The art or science of constructing sundials is called gnomonics, named after the Gnomon which is used to cast the shadow.
		+
		+	Solar time is derived from the Sun's position, by counting one hour of time every 15° of hour angle as Earth is rotating around its axis in 24 hours, which gives 360°/24 h = 15°/hour. On a sundial, the noon line corresponds to the moment of culmination of the Sun, when it crosses the local meridian. This line is always contained in the North-South plane and is always vertical on a vertical sundial, regardless of its orientation. This sort of time depends on the location or longitude. One calculates a longitude correction for a given location, by comparing the longitude to the reference meridian (CET meridian is 15° East), the time, for example in Exeter, Devon might be up to 15 minutes later than that of Greenwhich. So sundials are based on the equation of time plus a longitudinal correction.

	In the UK, the world heritage site, Stonhenge, built in the Neolithic period (2500 BC), is a form of sundial with each of the 30 upright stones representing one day within a repeating 30-day month, twelve rotations of the Circle equates to 12 months, forming a solar year (which is 365 days, not 360). The oldest sundials measuring shorter time cycles to be found in the UK the a tide dial which is part of Bewcastle Cross, Cumbria, dating from the 7th century, and the Boyne Valley sundial in Ireland, a Sundial Stone believed to be over 5000 years old along with many others. A tide, mass or scratch dial is a type of sundial that has the canonical hours instead or in addition to the standard hours of daylight marked on it.		In the UK, the world heritage site, Stonhenge, built in the Neolithic period (2500 BC), is a form of sundial with each of the 30 upright stones representing one day within a repeating 30-day month, twelve rotations of the Circle equates to 12 months, forming a solar year (which is 365 days, not 360). The oldest sundials measuring shorter time cycles to be found in the UK the a tide dial which is part of Bewcastle Cross, Cumbria, dating from the 7th century, and the Boyne Valley sundial in Ireland, a Sundial Stone believed to be over 5000 years old along with many others. A tide, mass or scratch dial is a type of sundial that has the canonical hours instead or in addition to the standard hours of daylight marked on it.

−	Today sundials can be found as features of historical buildings and landscapes often as single horizontal standalone features in gardens or incorporated into building facades as vertical sundials. A map showing sundials of interest around the UK can be viewed via The British Sundial Society, along with history, guidance and advice.	+	Today sundials can be found as features of historical buildings and landscapes, often as single horizontal standalone features in gardens or incorporated into building facades as vertical sundials. A map showing sundials of interest around the UK can be viewed via The British Sundial Society, along with history, guidance and advice. Sundials can also be added as interesting features to modern homes or as home educational design projects.
		+
		+	= External Links =
		+
		+	[https://sundialsoc.org.uk/dials-filter/ https://sundialsoc.org.uk/dials-filter/]
		+
		+	[https://www.shadowspro.com/en/sundials.html https://www.shadowspro.com/en/sundials.html]
		+
		+	[https://www.sundialzone.com/en/sundial https://www.sundialzone.com/en/sundial]

	= Related articles on Designing Buildings =		= Related articles on Designing Buildings =

Editor at 13:02, 5 July 2022

2022-07-05T13:02:21Z

← Older revision		Revision as of 13:02, 5 July 2022
Line 1:		Line 1:
−	A sundial is an instrument used to show the time of day, it does so using a spike or triangle (a gnomon) that protrudes from a horizontal or vertical plate creating a shadow which indicates the time. As such it is one of the earliest devices that relates to the study of time (horology) and was used by the ancient Egyptians and Babylonians (1500 BC).	+	A sundial is an instrument used to show the time of day, it does so using a spike or triangle (a gnomon) that protrudes from a horizontal or vertical plate creating a shadow which indicates the time. As such it is one of the earliest devices that relates to the study of time (horology) and was used by the ancient Egyptians and Babylonians (1500 BC). The art or science of constructing sundials is called gnomonics, named after the Gnomon which is used to cast the shadow.

−	In the UK Stonhenge ~~itself~~, built in the Neolithic period (2500 BC), is a form of sundial with each of the 30 upright stones representing one day within a repeating 30-day month, twelve rotations of the Circle equates to 12 months, forming a solar year (which is 365 days, not 360). The oldest sundials measuring shorter time cycles to be found in ~~England is~~ a tide dial which is part of Bewcastle Cross, Cumbria, dating from the 7th ~~or 8th~~ century, ~~aswell as~~	+	In the UK, the world heritage site, Stonhenge, built in the Neolithic period (2500 BC), is a form of sundial with each of the 30 upright stones representing one day within a repeating 30-day month, twelve rotations of the Circle equates to 12 months, forming a solar year (which is 365 days, not 360). The oldest sundials measuring shorter time cycles to be found in the UK the a tide dial which is part of Bewcastle Cross, Cumbria, dating from the 7th century, and the Boyne Valley sundial in Ireland, a Sundial Stone believed to be over 5000 years old along with many others. A tide, mass or scratch dial is a type of sundial that has the canonical hours instead or in addition to the standard hours of daylight marked on it.

−	Today sundials	+	Today sundials can be found as features of historical buildings and landscapes often as single horizontal standalone features in gardens or incorporated into building facades as vertical sundials. A map showing sundials of interest around the UK can be viewed via The British Sundial Society, along with history, guidance and advice.
		+
		+	= Related articles on Designing Buildings =
		+
		+	* Conservation area.
		+	* Conservation officer.
		+	* Brise soleil.
		+	* Designing daylight solutions for commercial buildings.
		+	* 'England's Post-War Listed Buildings'.
		+	* EN 17037 Daylight in buildings.
		+	* G-value.
		+	* Heritage at Risk Register.
		+	* Guidance on Alterations to Listed Buildings.
		+	* Historic England.
		+	* Listed Building Heritage Partnership Agreements.
		+	* Local Listed Building Consent Orders.
		+	* Local interest list.
		+	* Large scale solar thermal energy.
		+	* Low-e glass.
		+	* Natural ventilation.
		+	* Part L.
		+	* Passive building design.
		+	* Protection of historic statues, plaques, memorials and monuments.
		+	* Scheduled monuments.
		+	* Shading coefficient.
		+	* Solar chimney.
		+	* Solar photovoltaics.
		+	* Thermal optical properties.
		+	* Trombe wall.
		+	* The history of listed buildings.
		+	* Urban heat island effect.
		+	* Visible light.
		+
		+	[[Category:DCN_Definition]] [[Category:DCN_Product_Knowledge]] [[Category:Definitions]] [[Category:History]] [[Category:Products_/_components]]

Editor: Created page with "A sundial is an instrument used to show the time of day, it does so using a spike or triangle (a gnomon) that protrudes from a horizontal or vertical plate creating a shadow whic..."

2022-07-05T11:35:30Z

Created page with "A sundial is an instrument used to show the time of day, it does so using a spike or triangle (a gnomon) that protrudes from a horizontal or vertical plate creating a shadow whic..."

New page

A sundial is an instrument used to show the time of day, it does so using a spike or triangle (a gnomon) that protrudes from a horizontal or vertical plate creating a shadow which indicates the time. As such it is one of the earliest devices that relates to the study of time (horology) and was used by the ancient Egyptians and Babylonians (1500 BC).

In the UK Stonhenge itself, built in the Neolithic period (2500 BC), is a form of sundial with each of the 30 upright stones representing one day within a repeating 30-day month, twelve rotations of the Circle equates to 12 months, forming a solar year (which is 365 days, not 360). The oldest sundials measuring shorter time cycles to be found in England is a tide dial which is part of Bewcastle Cross, Cumbria, dating from the 7th or 8th century, aswell as

Today sundials