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PEL Sector Light
The PEL sector light is a projector style marine beacon which is used to guide maritime vessels. It does this by projecting a colored sector out to sea with very sharp color changes as the mariner transitions from one sector to the next. Typical PEL sector lights will have a complete color change over 1 meter (sideways movement) when the mariner is 5 km from the beacon. The PEL's application becomes relevant to the mariner when combined with a local marine chart as each application of a PEL varies greatly. They are used for guiding vessels into harbor, traffic separation or to illuminate hazards. The main advantage to a PEL sector light is that it has very sharp transitions between colors (typical 0.05°) and is bright enough to be used in daylight with up to 10 Nautical Miles or 18.5 km visibility. Origin The term PEL is a generalized trademark of the Physics and Engineering Laboratory which was part of the Department of Scientific and Industrial Research (DSIR), a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Durban PEL
Durban ( ) ( zu, eThekwini, from meaning 'the port' also called zu, eZibubulungwini for the mountain range that terminates in the area), nicknamed ''Durbs'',Ishani ChettyCity nicknames in SA and across the worldArticle on ''news24.com'' from 25 October 2017. Retrieved 2021-03-05.The names and the naming of Durban Website ''natalia.org.za'' (pdf). Retrieved 2021-03-05. is the third most populous city in after and |
First Porirua PEL
First or 1st is the ordinal form of the number one (#1). First or 1st may also refer to: *World record, specifically the first instance of a particular achievement Arts and media Music * 1$T, American rapper, singer-songwriter, DJ, and record producer Albums * ''1st'' (album), a 1983 album by Streets * ''1st'' (Rasmus EP), a 1995 EP by The Rasmus, frequently identified as a single * '' 1ST'', a 2021 album by SixTones * ''First'' (Baroness EP), an EP by Baroness * ''First'' (Ferlyn G EP), an EP by Ferlyn G * ''First'' (David Gates album), an album by David Gates * ''First'' (O'Bryan album), an album by O'Bryan * ''First'' (Raymond Lam album), an album by Raymond Lam * ''First'', an album by Denise Ho Songs * "First" (Cold War Kids song), a song by Cold War Kids * "First" (Lindsay Lohan song), a song by Lindsay Lohan * "First", a song by Everglow from ''Last Melody'' * "First", a song by Lauren Daigle * "First", a song by Niki & Gabi * "First", a song by Jonas Broth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Projector
A projector or image projector is an optical device that projects an image (or moving images) onto a surface, commonly a projection screen. Most projectors create an image by shining a light through a small transparent lens, but some newer types of projectors can project the image directly, by using lasers. A virtual retinal display, or retinal projector, is a projector that projects an image directly on the retina instead of using an external projection screen. The most common type of projector used today is called a video projector. Video projectors are digital replacements for earlier types of projectors such as slide projectors and overhead projectors. These earlier types of projectors were mostly replaced with digital video projectors throughout the 1990s and early 2000s, but old analog projectors are still used at some places. The newest types of projectors are handheld projectors that use lasers or LEDs to project images. Movie theaters used a type of projector cal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marine Beacon
Marine is an adjective meaning of or pertaining to the sea or ocean. Marine or marines may refer to: Ocean * Maritime (other) * Marine art * Marine biology * Marine debris * Marine habitats * Marine life * Marine pollution Military * Marines, a naval-based infantry force ** United States Marine Corps ** Royal Marines of the UK ** Brazilian Marine Corps ** Spanish Marine Infantry ** Fusiliers marins (France) ** Indonesian Marine Corps ** Republic of China Marine Corps ** Republic of Korea Marine Corps ** Royal Thai Marine Corps *"Marine" also means "navy" in several languages: ** Austro-Hungarian Navy () ** Belgian Navy (, , ) ** Royal Canadian Navy () *** Provincial Marine (1796–1910), a predecessor to the Royal Canadian Navy ** Navy of the Democratic Republic of the Congo () ** Royal Danish Navy () ** Finnish Navy (, ) ** French Navy () ** Gabonese Navy () ** German Navy () ** Royal Moroccan Navy () ** Royal Netherlands Navy () ** Swedish Navy () Places * Marines ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sector Light
A sector light is a man-made pilotage and position fixing aid that consists of strictly delineated horizontal angle light beams to guide water-borne traffic through a safe channel at night in reasonable visibility. Sector lights are most often used for safe passage through shallow or dangerous waters. This may be when leaving or entering harbour. Nautical charts (paper and electronic) give all the required information. Sectors of colored glass (or plastic) are placed in the lanterns of these lights. The light will then show these colors when observed certain bearings. Bearings referring to a sector are given in degrees true, as observed from sea. Though the colors of the light will change, the characteristics will not. The change of color is not abrupt. The transition is made through an arc of uncertainty of 2° or greater. The colors that are used, are conform to the IALA Maritime Buoyage system that is designed by the International Association of Lighthouse Authorities: * whit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Generic Trademark
A generic trademark, also known as a genericized trademark or proprietary eponym, is a trademark or brand name that, because of its popularity or significance, has become the generic term for, or synonymous with, a general class of products or services, usually against the intentions of the trademark's owner. A trademark is said to become ''genericized''—or, informally, to have suffered ''genericide''—when it begins as a distinctive product identifier but changes in meaning to become generic. This typically happens when the products or services which the trademark is associated with have acquired substantial market dominance or mind share, such that the primary meaning of the genericized trademark becomes the product or service itself rather than an indication of source for the product or service. A trademark thus popularised has its legal protection at risk in some countries such as the United States and United Kingdom, as its intellectual property rights in the trad ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Department Of Scientific And Industrial Research (New Zealand)
The Department of Scientific and Industrial Research (DSIR) is a now-defunct government science agency in New Zealand, founded in 1926 and broken into Crown Research Institutes in 1992. Foundation DSIR was founded in 1926 by Ernest Marsden after calls from Ernest Rutherford for government to support education and research and on the back of the 1923 Imperial Conference, Imperial Economic Conference in London in October and November 1923, when various colonies discussed setting up such departments. It initially received funding from sources such as the Empire Marketing Board. The initial plans also included a new agricultural college, to be jointly founded by Auckland University, Auckland and Victoria University of Wellington, Victoria University Colleges, Palmerston North was chosen as the site for this and it grew to become Massey University. Structure DSIR initially had five divisions: * Grasslands in Palmerston North * Plant Diseases in Auckland * Entomology, attached to th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vega Industries
Vega Industries Limited is a company in Porirua, New Zealand which manufactures specialised navigation and signal lights for use in transportation industries, primarily marine navigation. Vega has been in business since 1972 when it built a marine guidance system based on a design by Norman Rumsey. Throughout the forty-plus years that Vega has been operating it has produced lights, which can be found all around the globe. From manufacturing the first LED lighthouse beacon (VRB-25) installed in the United States, to equipping Lake Balaton in Hungary with inland beacons (VLB-92). They have lighthouse and marine beacons installed in the United Kingdom and PEL Precision sector lights A sector light is a man-made pilotage and position fixing aid that consists of strictly delineated horizontal angle light beams to guide water-borne traffic through a safe channel at night in reasonable visibility. Sector lights are most often u ... found in most major ports and harbours as well a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paremata
Paremata is a suburb of Porirua, on the Tasman Sea coast to the north of Wellington, New Zealand. History Early history The modern suburb, just south of Plimmerton, derives its name from the "Paremata Barracks", erected on the north shore of Porirua Harbour in about 1846 when the British Empire was nervous about the local Ngati Toa tribe under its leader Te Rauparaha. The stone barracks were largely destroyed by an earthquake in 1848. The Wellington and Manawatu Railway Company built a station nearby, towards the end of the 19th century. In 1936 a road bridge finally spanned the entrance to the Pauatahanui Inlet, greatly easing access to Wellington for the growing suburb. After a coast road was built between Pukerua Bay and Paekakariki further north, the route through Paremata became part of State Highway 1. Later developments to ease congestion included the Paremata Roundabout, just south of the road bridge, reducing some of the distress that was occasionally caused at what ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leading Lights
Leading lights (also known as range lights in the United States) are a pair of light beacons used in navigation to indicate a safe passage for vessels entering a shallow or dangerous channel; they may also be used for position fixing. At night, the lights are a form of leading line that can be used for safe navigation. The beacons consist of two lights that are separated in distance and elevation, so that when they are aligned, with one above the other, they provide a bearing. Range lights are often illuminated day and night. In some cases the two beacons are unlighted, in which case they are known as a range in the United States or a transit in the UK. The beacons may be artificial or natural. Operation Two lights are positioned near one another. One, called the front light, is lower than the one behind, which is called the rear light. At night when viewed from a ship, the two lights only become aligned vertically when a vessel is positioned on the correct bearing. During t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Norman Rumsey
Norman Jack Rumsey (15 September 1922 – 9 January 2007) was a New Zealand designer of optical systems. Rumsey was the head of the optics section of the Department of Scientific and Industrial Research (DSIR) from 1949 until his retirement. He developed the optical system for the McLellan telescope at the Mount John University Observatory near Lake Tekapo in the Mackenzie Basin. His design was the basis for a marine navigation system that was commercialised by Vega Industries in Porirua. 4154 Rumsey, a minor planet, is named for him. The citation reads: In 1973, Rumsey was awarded the T. K. Sidey Medal, an award set up by the Royal Society of New Zealand for outstanding scientific research. In the 2004 Queen's Birthday Honours, he was appointed an Officer of the New Zealand Order of Merit, for services to optics and astronomy. Rumsey was a member of the Astronomical Society of Australia and the International Astronomical Union. For many years, he was on the council of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Optical Filter
An optical filter is a device that selectively transmits light of different wavelengths, usually implemented as a glass plane or plastic device in the optical path, which are either dyed in the bulk or have interference coatings. The optical properties of filters are completely described by their frequency response, which specifies how the magnitude and phase of each frequency component of an incoming signal is modified by the filter. Filters mostly belong to one of two categories. The simplest, physically, is the absorptive filter; then there are interference or dichroic filters. Many optical filters are used for optical imaging and are manufactured to be transparent; some used for light sources can be translucent. Optical filters selectively transmit light in a particular range of wavelengths, that is, colours, while absorbing the remainder. They can usually pass long wavelengths only (longpass), short wavelengths only (shortpass), or a band of wavelengths, block ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
