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Eilean Musdile
Eilean Musdile (Mansedale) is an islet, and lighthouse to the south west of Lismore in the Inner Hebrides. The island lies in the entrance to Loch Linnhe, separated from Lismore by a sound ¼ miles across. It is a low-lying rock, in size, with some grass on it. CalMac ferries pass close to the island on their way from Oban to Mull. The lighthouse was built by Robert Stevenson in 1833 at a cost of £4260 and initially showed a fixed white light. In 1910 most of the Northern Lighthouse Board's lights were changed to dioptric or Fresnel lenses but Lismore and Fidra, in the Firth of Forth, were left as the only remaining purely catoptric lights in the service. A Standing Stone once stood on the highest point of the island (). The monolith appears to have recorded the midwinter sunset and is thought to have been removed during construction of the lighthouse. The skerry of Lady's Rock lies a short distance to the south west. See also * List of lighthouses in Scotland * List of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oban
Oban ( ; ' in Scottish Gaelic meaning ''The Little Bay'') is a resort town within the Argyll and Bute council area of Scotland. Despite its small size, it is the largest town between Helensburgh and Fort William. During the tourist season, the town can have a temporary population of up to over 24,000 people. Oban occupies a setting in the Firth of Lorn. The bay forms a near perfect horseshoe, protected by the island of Kerrera; and beyond Kerrera, the Isle of Mull. To the north, is the long low island of Lismore and the mountains of Morvern and Ardgour. Pre-history and archaeology Humans have used the site where Oban now stands since at least Mesolithic times, as evidenced by archaeological remains of cave dwellers found in the town. Just outside the town, stands Dunollie Castle, on a site that overlooks the main entrance to the bay and has been fortified since the Bronze Age. Just to the north of Oban, at Dunstaffnage, excavations in 2010, by Argyll Archaeology, in advanc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lighthouse
A lighthouse is a tower, building, or other type of physical structure designed to emit light from a system of lamps and lenses and to serve as a beacon for navigational aid, for maritime pilots at sea or on inland waterways. Lighthouses mark dangerous coastlines, hazardous shoals, reefs, rocks, and safe entries to harbors; they also assist in aerial navigation. Once widely used, the number of operational lighthouses has declined due to the expense of maintenance and has become uneconomical since the advent of much cheaper, more sophisticated and effective electronic navigational systems. History Ancient lighthouses Before the development of clearly defined ports, mariners were guided by fires built on hilltops. Since elevating the fire would improve the visibility, placing the fire on a platform became a practice that led to the development of the lighthouse. In antiquity, the lighthouse functioned more as an entrance marker to ports than as a warning signal for reefs a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Archaeological Sites In The Northern Inner Hebrides
Archaeology or archeology is the scientific study of human activity through the recovery and analysis of material culture. The archaeological record consists of Artifact (archaeology), artifacts, architecture, biofact (archaeology), biofacts or ecofacts, archaeological site, sites, and cultural landscapes. Archaeology can be considered both a social science and a branch of the humanities. It is usually considered an independent academic discipline, but may also be classified as part of anthropology (in North America – the four-field approach), history or geography. Archaeologists study human prehistory and history, from the development of the first stone tools at Lomekwi in East Africa 3.3 million years ago up until recent decades. Archaeology is distinct from palaeontology, which is the study of fossil remains. Archaeology is particularly important for learning about prehistoric societies, for which, by definition, there are no written records. Prehistory includes ove ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Category A Listed Lighthouses
Category, plural categories, may refer to: Philosophy and general uses *Categorization, categories in cognitive science, information science and generally *Category of being * ''Categories'' (Aristotle) *Category (Kant) *Categories (Peirce) *Category (Vaisheshika) *Stoic categories *Category mistake Mathematics * Category (mathematics), a structure consisting of objects and arrows * Category (topology), in the context of Baire spaces * Lusternik–Schnirelmann category, sometimes called ''LS-category'' or simply ''category'' * Categorical data, in statistics Linguistics *Lexical category, a part of speech such as ''noun'', ''preposition'', etc. *Syntactic category, a similar concept which can also include phrasal categories *Grammatical category, a grammatical feature such as ''tense'', ''gender'', etc. Other * Category (chess tournament) * Objective-C categories, a computer programming concept * Pregnancy category * Prisoner security categories in the United Kingdom * We ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Northern Lighthouse Board Lighthouses
This is a list of the currently operational lighthouses of the Northern Lighthouse Board (NLB). The list is divided by geographical location, and then by whether the lighthouses are classed by the NLB as a 'major lighthouse' or a 'minor light'. Former NLB lighthouses now disposed of are not included in the list. Scotland (except principal island groups) Major lighthouses Minor lights * Ardtornish * Bass Rock * Cailleach Head * Cairnbulg Briggs * Corran Narrows North East * Corran Point * Craigton Point * Dunollie * Elie Ness * Hestan Island * Holy Island (Inner) * Lady Isle * Little Ross * Little Ross Beacon * Loch Eriboll * Loch Ryan * Longman Point * Oban NLB Pier * Sandaig * Sgeir Bhuidhe * Sula Sgeir * Turnberry The Hebrides Major lighthouses * Barra Head * Butt of Lewis * Dubh Artach * Eilean Glas * Flannan Islands * * Hyskeir * Lismore * Monach * Neist Point * * Rinns of Islay * * Ruvaal * Scarinish * Skerryvore * Tiumpan Head * Ushenish Minor ligh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Lighthouses In Scotland
This is a list of lighthouses in Scotland. The Northern Lighthouse Board, from which much of the information is derived, are responsible for most lighthouses in Scotland but have handed over responsibility in the major estuaries to the port authorities. Many of the more minor lights are not shown. A lighthouse that is no longer operating is indicated by the date of closure in the ''operated by'' column. Where two dates are shown, the lighthouse has been rebuilt. Nearly all the lighthouses in this list were designed by and most were built by four generations of one family, including Thomas Smith, who was both the stepfather and father-in-law of Robert Stevenson. Robert's sons and grandsons not only built most of the lights, often under the most appalling of conditions, but pioneered many of the improvements in lighting and signalling that cut down the enormous loss of life in shipping around the coasts of Scotland. The table may be sorted by any column by clicking on the headin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lady's Rock
Lady's Rock is an uninhabited skerry to the south west of Lismore in the Inner Hebrides. It is submerged at high tide and carries a navigation beacon. Eilean Musdile is to the north east, next to Lismore. History In 1527, Lachlan Maclean of Duart decided to murder his wife, Lady Catherine Campbell, a sister of Archibald Campbell, 4th Earl of Argyll. He rowed out to the rock one night at low tide and left his wife stranded on the rock to die.Murray (1977) p. 158 states the incident took place in 1523. Looking out the next day from Duart Castle he observed the rock was devoid of life, so he sent a message of condolence to the earl at Inveraray Castle, indicating that he intended to bring his wife's body there for burial. Maclean duly arrived at Inveraray with an entourage of men and the coffin. He was immediately taken to the dining hall of the castle for refreshment only to discover Lady Catherine waiting for him at the head of the table. She had been rescued during the night by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Catoptrics
Catoptrics (from grc-gre, κατοπτρικός ''katoptrikós'', "specular", from grc-gre, κάτοπτρον ''katoptron'' "mirror") deals with the phenomena of reflected light and image-forming optical systems using mirrors. A catoptric system is also called a ''catopter'' (''catoptre''). Ancient texts ''Catoptrics'' is the title of two texts from ancient Greece: *The Pseudo-Euclidean ''Catoptrics''. This book is attributed to Euclid, although the contents are a mixture of work dating from Euclid's time together with work which dates to the Roman period., accessed 31 January 2013 It has been argued that the book may have been compiled by the 4th century mathematician Theon of Alexandria. The book covers the mathematical theory of mirrors, particularly the images formed by plane and spherical concave mirrors. *Hero's ''Catoptrics''. Written by Hero of Alexandria, this work concerns the practical application of mirrors for visual effects. In the Middle Ages, this work was fal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Firth Of Forth
The Firth of Forth () is the estuary, or firth, of several Scottish rivers including the River Forth. It meets the North Sea with Fife on the north coast and Lothian on the south. Name ''Firth'' is a cognate of ''fjord'', a Norse word meaning a narrow inlet. ''Forth'' stems from the name of the river; this is ''*Vo-rit-ia'' (slow running) in Proto-Celtic, yielding '' Foirthe'' in Old Gaelic and '' Gweryd'' in Welsh. It was known as ''Bodotria'' in Roman times. In the Norse sagas it was known as the ''Myrkvifiörd''. An early Welsh name is ''Merin Iodeo'', or the "Sea of Iudeu". Geography and economy Geologically, the Firth of Forth is a fjord, formed by the Forth Glacier in the last glacial period. The drainage basin for the Firth of Forth covers a wide geographic area including places as far from the shore as Ben Lomond, Cumbernauld, Harthill, Penicuik and the edges of Gleneagles Golf Course. Many towns line the shores, as well as the petrochemical complexes at Gr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fidra
Fidra (archaically Fidrey or Fetheray) is a currently uninhabited island in the Firth of Forth, northwest of North Berwick, on the east coast of Scotland. The island is an RSPB Scotland nature reserve. Geography Like the other islands near North Berwick, Fidra is the result of volcanic activity around 335 million years ago. Fidra consists of three sections; a hill at one end with the lighthouse on it; a low-lying section in the middle, effectively an isthmus; and a rocky stack at the other end. History The island's name is believed to be Old Norse in origin, referring to the large number of bird feathers found there. Like the nearby Bass Rock, it has a substantial seabird population, and is now an RSPB reserve. The village of Gullane lies to the south-west, and the nature reserve of Yellowcraig and village of Dirleton, to which parish Fidra belongs,Martine, John (1890) ''Fourteen Parishes of the County of Haddington'', Edinburgh, p.50-51 are to the south. Remotely operated ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fresnel Lens
A Fresnel lens ( ; ; or ) is a type of composite compact lens developed by the French physicist Augustin-Jean Fresnel (1788–1827) for use in lighthouses. It has been called "the invention that saved a million ships." The design allows the construction of lenses of large aperture and short focal length without the mass and volume of material that would be required by a lens of conventional design. A Fresnel lens can be made much thinner than a comparable conventional lens, in some cases taking the form of a flat sheet. The simpler dioptric (purely refractive) form of the lens was first proposed by Count Buffon and independently reinvented by Fresnel. The ''catadioptric'' form of the lens, entirely invented by Fresnel, has outer elements that use total internal reflection as well as refraction; it can capture more oblique light from a light source and add it to the beam of a lighthouse, making the light visible from greater distances. Description The Fresnel lens redu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gazetteer For Scotland
The ''Gazetteer for Scotland'' is a gazetteer covering the geography, history and people of Scotland. It was conceived in 1995 by Bruce Gittings of the University of Edinburgh and David Munro of the Royal Scottish Geographical Society, and contains 25,870 entries as of July 2019. It claims to be "the largest dedicated Scottish resource created for the web". The Gazetteer for Scotland provides a carefully researched and editorially validated resource widely used by students, researchers, tourists and family historians with interests in Scotland. Following on from a strong Scottish tradition of geographical publishing, the ''Gazetteer for Scotland'' is the first comprehensive gazetteer to be produced for the country since Francis Groome's ''Ordnance Gazetteer of Scotland'' (1882-6) (the text of which is incorporated into relevant entries). The aim is not to produce a travel guide, of which there are many, but to write a substantive and thoroughly edited description of the count ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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