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Radar Hill, Mount Surprise
Radar Hill is a heritage-listed radar station at Gulf Developmental Road, Mount Surprise, Shire of Etheridge, Queensland, Australia. It was built about August 1943 by the Allied Works Council. It is also known as No. 53 RDF Station. It was added to the Queensland Heritage Register on 12 July 2005. History No.53 Radio Direction Finding Station was established in 1943 at Mount Surprise as one of 25 RDF stations controlled by the Royal Australian Air Force No.42 Radar Wing Headquarters in Townsville. These stations were constructed across northern Australia to provide warning of potential Japanese aircraft raids on Queensland's eastern seaboard centres. They utilised the most secretive of new technology and for security reasons little was known by the wider community of their existence and function. Frequently much of the associated infrastructure at these sites was removed or demolished after World War II. In response to the Japanese military dominance in Southeast Asia and t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gulf Developmental Road
Gulf Developmental Road is an Australian highway linking the Cairns and Normanton regions in northern Queensland, Australia. It is the only sealed (asphalt) road linking these two regions. In the east, the road begins at an unnamed junction on the southern edge of Forty Mile Scrub National Park, 241 km south-west of Cairns. The Gulf Developmental Road runs west before terminating at its junction with the Burke Developmental Road 7 km south of Normanton, a total distance of 442 km. Towns along the route include Mount Surprise, Georgetown and Croydon. There are no other communities along the route, but it passes through the ghost town of Cumberland. The road is sealed for its full length, but as of 2018 there are many sections of the road which are only single lane bitumen. These sections require caution when passing other traffic as the shoulders are gravel and vehicles need to move partly onto the shoulders. They extend between points about 55 kilometres we ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atherton Tableland
The Atherton Tableland is a fertile plateau which is part of the Great Dividing Range in Queensland, Australia. The principal river flowing across the plateau is the Barron River (Australia), Barron River. It was dammed to form an irrigation reservoir named Lake Tinaroo. Tinaroo Hydro Power Station, Tinaroo Hydro, a small 1.6 MW hydroelectric power station, is located near the spillway. Physiography This area is a distinct physical geography, physiographic section of the larger North Queensland Highlands province, which in turn is part of the larger East Australian Cordillera physiographic division. South of the Tablelands is the Bellenden Ker Range. Geological history About 100 million years ago, the eastern edge of the Australian continent extended much further to the east, before tectonic forces fractured the eastern margin, pulling it apart. At the same time, slowly rising mantle material caused a doming up of the continental crust. As the eastern part of the continent b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Camouflage
Camouflage is the use of any combination of materials, coloration, or illumination for concealment, either by making animals or objects hard to see, or by disguising them as something else. Examples include the leopard's spotted coat, the battledress of a modern soldier, and the leaf-mimic katydid's wings. A third approach, motion dazzle, confuses the observer with a conspicuous pattern, making the object visible but momentarily harder to locate, as well as making general aiming easier. The majority of camouflage methods aim for crypsis, often through a general resemblance to the background, high contrast disruptive coloration, eliminating shadow, and countershading. In the open ocean, where there is no background, the principal methods of camouflage are transparency, silvering, and countershading, while the bioluminescence, ability to produce light is among other things used for counter-illumination on the undersides of cephalopods such as squid. Some animals, such as chamel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New South Wales
) , nickname = , image_map = New South Wales in Australia.svg , map_caption = Location of New South Wales in AustraliaCoordinates: , subdivision_type = Country , subdivision_name = Australia , established_title = Before federation , established_date = Colony of New South Wales , established_title2 = Establishment , established_date2 = 26 January 1788 , established_title3 = Responsible government , established_date3 = 6 June 1856 , established_title4 = Federation , established_date4 = 1 January 1901 , named_for = Wales , demonym = , capital = Sydney , largest_city = capital , coordinates = , admin_center = 128 local government areas , admin_center_type = Administration , leader_title1 = Monarch , leader_name1 = Charles III , leader_title2 = Governor , leader_name2 = Margaret Beazley , leader_title3 = Premier , leader_name3 = Dominic Perrottet ( Liberal) , national_representation = Parliament of Australia , national_representation_type1 = Sen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Richmond, New South Wales
Richmond is a town in New South Wales, in the local government area of the City of Hawkesbury. It is located 19 metres above sea level on the alluvial Hawkesbury River flats, at the foot of the Blue Mountains on the Cumberland Plain. It is about 65 km by road from Sydney and about 78 km by road from Lithgow. History The Darug people were the Aboriginal peoples to the area in 1788. The area was originally explored by British settlers in 1789 and the nearby eminence to the west of the Hawkesbury River was known by them as 'Richmond Hill'. The name was given by Governor Arthur Phillip, in honour of Charles Lennox, the third Duke of Richmond who was Master General of Ordnance in the Pitt administration. The local area was the third area to have European settlement in Australia after Sydney and Parramatta. The first 22 European settlers came to the area in 1794. They came to farm a total of in what is now Pitt Town Bottoms. They needed good farming land to help o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cathode Ray Tube
A cathode-ray tube (CRT) is a vacuum tube containing one or more electron guns, which emit electron beams that are manipulated to display images on a phosphorescent screen. The images may represent electrical waveforms (oscilloscope), pictures ( television set, computer monitor), radar targets, or other phenomena. A CRT on a television set is commonly called a picture tube. CRTs have also been used as memory devices, in which case the screen is not intended to be visible to an observer. The term '' cathode ray'' was used to describe electron beams when they were first discovered, before it was understood that what was emitted from the cathode was a beam of electrons. In CRT television sets and computer monitors, the entire front area of the tube is scanned repeatedly and systematically in a fixed pattern called a raster. In color devices, an image is produced by controlling the intensity of each of three electron beams, one for each additive primary color (red, green, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flying Fox (cablecar)
A zip-line, zip line, zip-wire, flying fox, or death slide is a pulley suspended on a cable, usually made of stainless steel, mounted on a slope. It is designed to enable cargo or a person propelled by gravity to travel from the top to the bottom of the inclined cable by holding on to, or being attached to, the freely moving pulley. It has been described as essentially a Tyrolean traverse that engages gravity to assist its speed of movement. Its use is not confined to adventure sport, recreation, or tourism, although modern-day usage tends to favor those meanings. History Ropeways or aerial cables have been used as a method of transport in some mountainous countries for more than 2,000 years, possibly starting in China, India and Japan as early as 250 BC, remaining in use in some remote areas in China such as Nujiang (Salween) valley in Yunnan as late as 2015 before being replaced by bridges. Not all of these structures were assisted by gravity, so not all fitted the defini ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Timebase
A time base generator (also timebase or time base) is a special type of function generator, an electronic circuit that generates a varying voltage to produce a particular waveform. Time base generators produce very high frequency sawtooth waves specifically designed to deflect the beam of a cathode ray tube (CRT) smoothly across the face of the tube and then return it to its starting position. Time bases are used by radar systems to determine range to a target, by comparing the current location along the time base to the time of arrival of radio echoes. Analog television systems using CRTs had two time bases, one for deflecting the beam horizontally in a rapid movement, and another pulling it down the screen 60 times per second. Oscilloscopes often have several time bases, but these may be more flexible function generators able to produce many waveforms as well as a simple time base. Description A cathode ray tube (CRT) consists of three primary parts, the electron gun that prov ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radar
Radar is a detection system that uses radio waves to determine the distance ('' ranging''), angle, and radial velocity of objects relative to the site. It can be used to detect aircraft, ships, spacecraft, guided missiles, motor vehicles, weather formations, and terrain. A radar system consists of a transmitter producing electromagnetic waves in the radio or microwaves domain, a transmitting antenna, a receiving antenna (often the same antenna is used for transmitting and receiving) and a receiver and processor to determine properties of the objects. Radio waves (pulsed or continuous) from the transmitter reflect off the objects and return to the receiver, giving information about the objects' locations and speeds. Radar was developed secretly for military use by several countries in the period before and during World War II. A key development was the cavity magnetron in the United Kingdom, which allowed the creation of relatively small systems with sub-meter resolution ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Java
Java (; id, Jawa, ; jv, ꦗꦮ; su, ) is one of the Greater Sunda Islands in Indonesia. It is bordered by the Indian Ocean to the south and the Java Sea to the north. With a population of 151.6 million people, Java is the world's most populous island, home to approximately 56% of the Indonesian population. Indonesia's capital city, Jakarta, is on Java's northwestern coast. Many of the best known events in Indonesian history took place on Java. It was the centre of powerful Hindu-Buddhist empires, the Islamic sultanates, and the core of the colonial Dutch East Indies. Java was also the center of the Indonesian struggle for independence during the 1930s and 1940s. Java dominates Indonesia politically, economically and culturally. Four of Indonesia's eight UNESCO world heritage sites are located in Java: Ujung Kulon National Park, Borobudur Temple, Prambanan Temple, and Sangiran Early Man Site. Formed by volcanic eruptions due to geologic subduction of the Aust ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Catalina Flying Boat
The Consolidated PBY Catalina is a flying boat and amphibious aircraft that was produced in the 1930s and 1940s. In Canadian service it was known as the Canso. It was one of the most widely used seaplanes of World War II. Catalinas served with every branch of the United States Armed Forces and in the air forces and navies of many other nations. The last military PBYs served until the 1980s. As of 2021, 86 years after its first flight, the aircraft continues to fly as a waterbomber (or airtanker) in aerial firefighting operations in some parts of the world. None remain in military service. Design and development Background The PBY was originally designed to be a patrol bomber, an aircraft with a long operational range intended to locate and attack enemy transport ships at sea in order to disrupt enemy supply lines. With a mind to a potential conflict in the Pacific Ocean, where troops would require resupply over great distances, the U.S. Navy in the 1930s invested millions ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cairns
Cairns (, ) is a city in Queensland, Australia, on the tropical north east coast of Far North Queensland. The population in June 2019 was 153,952, having grown on average 1.02% annually over the preceding five years. The city is the 5th-most-populous in Queensland, and 15th in Australia. The city was founded in 1876 and named after Sir William Wellington Cairns, following the discovery of gold in the Hodgkinson river. Throughout the late 19th century, Cairns prospered from the settlement of Chinese immigrants who helped develop the region's agriculture. Cairns also served as a port for blackbirding ships, bringing slaves and indentured labourers to the sugar plantations of Innisfail. During World War II, the city became a staging ground for the Allied Forces in the Battle of the Coral Sea. By the late 20th century the city had become a centre of international tourism, and in the early 21st century has developed into a major metropolitan city. Cairns is a popular touris ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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