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Old Higher Lighthouse
The Old Higher Lighthouse is a disused 19th century lighthouse on the Isle of Portland, Dorset, southern England. It is located at Branscombe Hill on the west side of Portland, overlooking Portland Bill. The lighthouse is Grade II Listed. History The surrounding coast of Portland, namely Portland Bill and Chesil Beach, have been notorious for the many vessels that became shipwrecked in the area over the centuries. After years of local petitions to Trinity House, the organisation agreed for a lighthouse to be built at Portland Bill. George I granted the patent in 1716. That year, it was announced that Trinity House had 'caus'd to be erected two round Light-Houses of Stone upon Portland, in the County of Dorset, distant about two Thirds of a Mile from the Bill of Portland'. This one was built at Branscombe Hill, and the other, the Old Lower Lighthouse, on lower land. Designed as leading lights to guide ships between Portland Race and the Shambles sandbank, they shone out for the fi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isle Of Portland
An isle is an island, land surrounded by water. The term is very common in British English. However, there is no clear agreement on what makes an island an isle or its difference, so they are considered synonyms. Isle may refer to: Geography * Isle (river), a river in France * Isle, Haute-Vienne, a commune of the Haute-Vienne ''département'' in France * Isle, Minnesota, a small city in the United States * River Isle, a river in England Arts, entertainment, and media * ''Interdisciplinary Studies in Literature and Environment'' (or ''ISLE''), a journal published by Oxford University Press for the Association for the Study of Literature and Environment *''The Isle'', 2017 film with Conleth Hill * ''The Isle'', a 2000 South Korean film directed by Kim Ki-duk * ''Isle'' (album) Other uses * International Society for the Linguistics of English (ISLE), a learned society of linguists See also * Aisle An aisle is, in general, a space for walking with rows of non-walking spaces o ... [...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] |
Lighthouses Of The English Channel
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 and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lighthouses In Dorset
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 and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grade II Listed Lighthouses
Grade most commonly refers to: * Grade (education), a measurement of a student's performance * Grade, the number of the year a student has reached in a given educational stage * Grade (slope), the steepness of a slope Grade or grading may also refer to: Music * Grade (music), a formally assessed level of profiency in a musical instrument * Grade (band), punk rock band * Grades (producer), British electronic dance music producer and DJ Science and technology Biology and medicine * Grading (tumors), a measure of the aggressiveness of a tumor in medicine * The Grading of Recommendations Assessment, Development and Evaluation (GRADE) approach * Evolutionary grade, a paraphyletic group of organisms Geology * Graded bedding, a description of the variation in grain size through a bed in a sedimentary rock * Metamorphic grade, an indicatation of the degree of metamorphism of rocks * Ore grade, a measure that describes the concentration of a valuable natural material in the surroundin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grade II Listed Buildings In Dorset
There are many Grade II listed buildings in the county of Dorset. This is a list of them. Bournemouth * Bournemouth Gardens * Bournemouth Town Hall * East Cliff Church * Pavilion Theatre *Royal Bath Hotel *Royal Exeter Hotel * St Alban's Church * St Augustin's Church * St Mark's Church * St. Mark's School * Wimborne Road Cemetery Christchurch Listed buildings in Christchurch, Dorset#Grade II * The Town Hall, Christchurch North Dorset * Lady Wimborne Bridge Poole * Crown Hotel *Poole Civic Centre Purbeck * Clavell Tower * Castle Inn * Fort Henry *Square and Compass, Worth Matravers *Swanage Town Hall West Dorset * Beaminster Tunnel * Bridport Arts Centre *Dorset Martyrs Memorial *Pier Terrace, West Bay *Thomas Hardy Statue *Three Cups Hotel *Town Walks, Dorchester Weymouth and Portland * Brewers Quay (since 1974) * Custom House * Jubilee Clock Tower * Mulberry Harbour Phoenix Units * Old Higher Lighthouse *Old Lower Lighthouse *Pennsylvania Castle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lighthouses Completed In 1716
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 and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1716 Establishments In England
Events January–March * January 16 – The application of the Nueva Planta decrees to Catalonia make it subject to the laws of the Crown of Castile, and abolishes the Principality of Catalonia as a political entity, concluding the unification of Spain under Philip V. * January 27 – The Tugaloo massacre changes the course of the Yamasee War, allying the Cherokee nation with the British province of South Carolina against the Creek Indian nation. * January 28 – The town of Crieff, Scotland, is burned to the ground by Jacobites returning from the Battle of Sheriffmuir. * February 3 – The 1716 Algiers earthquake sequence began with an 7.0 mainshock that caused severe damage and killed 20,000 in Algeria. * February 10 – James Edward Stuart flees from Scotland to France with a handful of supporters, following the failure of the Jacobite rising of 1715. * February 24 – Jacobite leaders James Radclyffe, 3rd Earl of Derwentwater and Wil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
