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North Point Hummock Light
North Point Light, also known as North Point Hummock Light, was located on North Point, the most northern point on Moreton Island. North Point Light was constructed in the early 1860s, carrying a large kerosene burner with a reflector. In 1899, the lighthouse was replaced with a hardwood framed structure, clad with corrugated iron. It was the sixth of a group of eight lighthouses in Queensland constructed this way, including, by order of establishment, Little Sea Hill Light, Grassy Hill Light, Goods Island Light, Bay Rock Light, Old Caloundra Light, itself, Gatcombe Head Light and Bulwer Island Light. Oddly, a 1909 listing still describes the light as a square wooden lightroom, carrying a fixed sixth order dioptric Dioptrics is the branch of optics dealing with refraction, similarly the branch dealing with mirror A mirror or looking glass is an object that Reflection (physics), reflects an image. Light that bounces off a mirror will show an image of ... apparatus. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moreton Island
Moreton Island (Mulgumpin) is an island on the eastern side of Moreton Bay on the coast of South East Queensland, Australia. The Coral Sea lies on the east coast of the island. Moreton Island lies northeast of the Queensland capital, Brisbane. 95% of the island is contained within a national park and a popular destination for day trippers, four wheel driving, camping, recreational angling and whale watching and a 75-minute ferry ride from Brisbane. It is the third largest sand island in the world. Together with Fraser Island, Moreton Island forms the largest sand structure in the world. It was the traditional country of the Ngugi before the onset of colonization. The island is within the City of Brisbane and is gazetted into four localities, the small townships of Bulwer (on the north-west coast), Cowan Cowan (on the west coast) and Kooringal (on the south-west coast) with the bulk of the island being the locality of Moreton Island. The private Tangalooma Island Resort is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hardwood
Hardwood is wood from dicot trees. These are usually found in broad-leaved temperate and tropical forests. In temperate and boreal latitudes they are mostly deciduous, but in tropics and subtropics mostly evergreen. Hardwood (which comes from angiosperm trees) contrasts with softwood (which is from gymnosperm trees). Characteristics Hardwoods are produced by angiosperm trees that reproduce by flowers, and have broad leaves. Many species are deciduous. Those of temperate regions lose their leaves every autumn as temperatures fall and are dormant in the winter, but those of tropical regions may shed their leaves in response to seasonal or sporadic periods of drought. Hardwood from deciduous species, such as oak, normally shows annual growth rings, but these may be absent in some tropical hardwoods. Hardwoods have a more complex structure than softwoods and are often much slower growing as a result. The dominant feature separating "hardwoods" from softwoods is the presence o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Timber Framing
Timber framing (german: Holzfachwerk) and "post-and-beam" construction are traditional methods of building with heavy timbers, creating structures using squared-off and carefully fitted and joined timbers with joints secured by large wooden pegs. If the structural frame of load-bearing timber is left exposed on the exterior of the building it may be referred to as half-timbered, and in many cases the infill between timbers will be used for decorative effect. The country most known for this kind of architecture is Germany, where timber-framed houses are spread all over the country. The method comes from working directly from logs and trees rather than pre-cut dimensional lumber. Hewing this with broadaxes, adzes, and draw knives and using hand-powered braces and augers (brace and bit) and other woodworking tools, artisans or framers could gradually assemble a building. Since this building method has been used for thousands of years in many parts of the world, many styles ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cladding (construction)
Cladding is the application of one material over another to provide a skin or layer. In construction, cladding is used to provide a degree of thermal insulation and weather resistance, and to improve the appearance of buildings. Cladding can be made of any of a wide range of materials including wood, metal, brick, vinyl, and composite materials that can include aluminium, wood, blends of cement and recycled polystyrene, wheat/rice straw fibres. Rainscreen cladding is a form of weather cladding designed to protect against the elements, but also offers thermal insulation. The cladding does not itself need to be waterproof, merely a control element: it may serve only to direct water or wind safely away in order to control run-off and prevent its infiltration into the building structure. Cladding may also be a control element for noise, either entering or escaping. Cladding can become a fire risk by design or material. Description Cladding in construction is material applied over ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Corrugated Iron
Corrugated galvanised iron or steel, colloquially corrugated iron (near universal), wriggly tin (taken from UK military slang), pailing (in Caribbean English), corrugated sheet metal (in North America) and occasionally abbreviated CGI is a building material composed of sheets of hot-dip galvanised mild steel, cold-rolled to produce a linear ridged pattern in them. Although it is still popularly called "iron" in the UK, the material used is actually steel (which is iron alloyed with carbon for strength, commonly 0.3% carbon), and only the surviving vintage sheets may actually be made up of 100% iron. The corrugations increase the bending strength of the sheet in the direction perpendicular to the corrugations, but not parallel to them, because the steel must be stretched to bend perpendicular to the corrugations. Normally each sheet is manufactured longer in its strong direction. CGI is lightweight and easily transported. It was and still is widely used especially in rural a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Little Sea Hill Light
Sea Hill Lighthouse, also known as Sea Hill Point Light or Little Sea Hill Light, is a lighthouse on the northwest point of Curtis Island, Gladstone Region, Queensland, Australia. Its purpose was to mark the east side of the entrance to Keppel Bay, on passage to Fitzroy River and Port Alma. The first lighthouse at the locations was constructed in 1873 or 1876, moved in the 1920s, and is now on display at the Gladstone Maritime Museum. A second lighthouse was constructed in 1895 and its state is unclear. History First lighthouse The need for a lighthouse at this location was identified in 1864. The first lighthouse, constructed in 1873 or 1876, was the first in Queensland of its design, made of a hardwood frame clad with corrugated iron. This design was then used in seven more lighthouses, by order of establishment, Grassy Hill Light, Goods Island Light, Bay Rock Light, Old Caloundra Light, North Point Hummock Light (demolished), Gatcombe Head Light (demolished) and Bulw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grassy Hill Light
Grassy Hill Light, also known as Cooktown Light, is an active lighthouse located on Grassy Hill above Cooktown, Queensland, Australia, on the south side of the entrance to Endeavour River. History Grassy Hill was the site of Lieutenant James Cook landing in 1770. Cooktown was established in October 1873 to accommodate for the Palmer River Gold Rush, and became a thriving port in the 1880s. The first lights in and out of the port were leading lights set on sheds on the wharves. A signal staff was erected on Grassy Hill in 1874 to announce incoming ships, and a cottage was constructed for the signal staff operator in 1878–79. By 1882 a temporary light was set on the hill. In 1883 and 1884, George Poynter Heath, Portmaster of Queensland and Chairman of the Queensland Marine Board at that time, made two reports to the parliament, recommending that the temporary light be replaced with a permanent building and a proper apparatus. Grassy Hill Light was finally constructed in 1886. It ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Goods Island Light
Goods Island Light is an active lighthouse located on the highest point of Goods Island (Palilag), an island in the Torres Strait, belonging to Queensland, Australia. It serves as the rear light of the Goods Island Range, pointing out the entrance to Normanby Sound. History The first navigation aid on Goods Island was a signalling station, established in 1877. In 1882, pearl fishers operating in Torres Strait requested that a light be established at the western entrance to the straight. Their request was accepted by George Heath, chairman of the Queensland Marine Board, who dictated the location of Goods Island. A temporary light installed on the signalman's quarters was finally replaced by the lighthouse, constructed in 1886. It was the third in a group of eight lighthouses in Queensland made of hardwood frame clad with corrugated iron, which includes, in order of establishment Little Sea Hill Light, Grassy Hill Light, itself, Bay Rock Light, Old Caloundra Light, North Point ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bay Rock Light
Bay Rock Light is an inactive lighthouse which used to be located on Bay Rock, a rocky islet northwest of Magnetic Island, about north of Townsville, Queensland, Australia. First lit in 1886, it was automated in 1920 and deactivated in the 1980s. It was relocated in 1992 to the Townsville Maritime Museum, where it is now displayed. History Bay Rock Light was first lit in 1886. It was originally located on Bay Rock, at location , its main use being assisting vessels into a quarantine station on West Point, Magnetic Island. It also assisted passage into Cleveland Bay or to a main shipping anchorage off Bay Rock. The lighthouse was high, made of a timber frame clad with zinc- annealed galvanized corrugated iron sheets. It was the fourth in a group of eight lighthouses made of hardwood frame clad with corrugated iron, which included, by order of establishment Little Sea Hill Light, Grassy Hill Light, Goods Island Light, itself, Old Caloundra Light, North Point Hummock Light ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Old Caloundra Light
Old Caloundra Light, also known as Old Caloundra Head Light or Cape Caloundra Light, is an inactive lighthouse located in Caloundra on the Sunshine Coast in South East Queensland, Australia. It is the oldest surviving building in Caloundra. The lighthouse was active between 1896 and 1968. The tower was relocated twice. In 1970 it was relocated from its original location to Woorim Park in Caloundra, and in 1999 it was returned to its original site on Canberra Terrace near downtown Caloundra, where it stands today. History Operation The need for a lighthouse at Caloundra Head arose in 1879 with the sounding of the North West Channel, a deep water channel into Moreton Bay and the Port of Brisbane, the principal port of Queensland. The channel went from Caloundra Head along the eastern shore of Bribie Island. Although the channel became the most used entry channel into the port, it was only lit in 1896, when a pair of mobile leading lights were established on Bribie Island, the Cal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bulwer Island Light
Bulwer Island Light, also known as Bulwer Island Range Rear Light, is an inactive lighthouse that was on Bulwer Island, in the suburb of Pinkenba, City of Brisbane, Queensland, Australia. In 1983, it was moved to the Queensland Maritime Museum in South Brisbane. History The station was established in 1909. The current light was lit in 1912, as the rear light of a pair of leading lights at the mouth of Brisbane River. It was at the northern end of Bulwer Island on the eastern side directly adjacent to the river (). Made of hardwood frame clad with corrugated iron, it was the eight and last of its kind to be constructed, the first seven being Little Sea Hill Light, Grassy Hill Light, Goods Island Light, Bay Rock Light, Old Caloundra Head Light, North Point Hummock Light (demolished) and Gatcombe Head Light (demolished). In 1983 the lighthouse was replaced by a skeletal tower, and relocated to the Queensland Maritime Museum. The original location was adjacent to the Bulwer Isla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dioptric
Dioptrics is the branch of optics dealing with refraction, similarly the branch dealing with mirror A mirror or looking glass is an object that Reflection (physics), reflects an image. Light that bounces off a mirror will show an image of whatever is in front of it, when focused through the lens of the eye or a camera. Mirrors reverse the ...s is known as catoptrics. Dioptrics is the study of the refraction of light, especially by lens (optics), lenses. Optical telescope, Telescopes that create their image with an Objective (optics), objective that is a Lens (optics)#Types of simple lenses, convex lens (Refracting telescope, refractors) are said to be "dioptric" telescopes. An early study of dioptrics was conducted by Ptolemy in relationship to the human eye as well as refraction in media such as water. The understanding of the principles of dioptrics was further expanded by Alhazen, considered the List of people known as the father or mother of something, father of mode ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
