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Geocaching.com
Geocaching is an outdoor recreational activity, in which participants use a Global Positioning System (GPS) receiver or mobile device and other navigational techniques to hide and seek containers, called "geocaches" or "caches", at specific locations marked by coordinates all over the world. As of 2021 there were over a million active players in the United States. Geocaching can be considered a Location-based game. A typical cache is a small waterproof container containing a logbook and sometimes a pen or pencil. The geocacher signs the log with their established code name and dates it, in order to prove that they found the cache. After signing the log, the cache must be placed back exactly where the person found it. Larger containers such as plastic storage containers (Tupperware or similar) or ammo boxes can also contain items for trading, such as toys or trinkets, usually of more sentimental worth than financial. Geocaching shares many aspects with benchmarking, trigpoin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trackable
A Travel Bug is a registered trademark of Groundspeak, Inc. used to describe a dog tag used in Geocaching. It is moved from cache to cache, with a unique tracking number allowing its movements to be tracked through their geocaching website. Some tags are fastened to an object, known as a hitchhiker, before they are released into a cache. Travel bugs have also been used as advertising to promote Jeep or to increase diabetes awareness. A free service known as Geokrety is also available but this is not affliated to Groundspeak. Description A travel bug is an item which is trackable which looks similar to a dog tag. The tag is stamped with a tracking number and the Geocaching.com website address. A travel bug can be attached to another item by use of the chain on the travel bug if required, examples of such items include teddy bears, toy cars, or golf balls. Marsh (2011): p. 87 These attached items are called "hitchhikers". During the registration of the bug on the website, the o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trigpointing
Benchmarking, also known as benchmark hunting, is a hobby activity in which participants find benchmarks (also known as survey markers or geodetic control points). The term "bench mark" is used only to refer to survey markers that designate a certain elevation, but hobbyists often use the term benchmarks to include triangulation stations or other reference marks. They typically then log their finds online. Like geocaching, the activity has become popular since 1995, propelled by the availability of on-line data on the location of survey marks (with directions for finding them) and by the rise of hobbyist-oriented websites. History Many survey markers in the U.S. were set over 100 years ago. There was a surge in creating these marks in the U.S. from about 1930 to 1955, in conjunction with the expansion of map-making activities across the country. Sources of data on U.S. marks In the U.S., about 740,000 benchmarks with the most precise elevations or coordinates (but only a smal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Benchmarking (hobby)
Benchmarking, also known as benchmark hunting, is a hobby activity in which participants find benchmarks (also known as survey markers or geodetic control points). The term "bench mark" is used only to refer to survey markers that designate a certain elevation, but hobbyists often use the term benchmarks to include triangulation stations or other reference marks. They typically then log their finds online. Like geocaching, the activity has become popular since 1995, propelled by the availability of on-line data on the location of survey marks (with directions for finding them) and by the rise of hobbyist-oriented websites. History Many survey markers in the U.S. were set over 100 years ago. There was a surge in creating these marks in the U.S. from about 1930 to 1955, in conjunction with the expansion of map-making activities across the country. Sources of data on U.S. marks In the U.S., about 740,000 benchmarks with the most precise elevations or coordinates (but only a smal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beavercreek, Oregon
Beavercreek is an unincorporated hamlet and census-designated place in Clackamas County, Oregon, United States, located southeast of Oregon City. The population was 4,485 at the 2010 census. Demographics History According to ''Oregon Geographic Names'', the name "Beaver Creek" was first used for a school district in this area in the early 1850s. It was named for the creek that flows through the community and into the Willamette River. A post office operated under various names in the locality until 1922, when the name was changed to Beavercreek, the form still used today. Beavercreek's ZIP code is 97004. In the summer of 2006, the citizens of Beavercreek voted to become Oregon's first hamlet, a system of quasi-government which exists in Clackamas County, Oregon. A final hearing by the board of county commissioners on the formation of the hamlet took place in September 2006, and officially recognized the community as The Hamlet of Beavercreek. The hamlet holds monthly community ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Selective Availability
The error analysis for the Global Positioning System is important for understanding how GPS works, and for knowing what magnitude of error should be expected. The GPS makes corrections for receiver clock errors and other effects but there are still residual errors which are not corrected. GPS receiver position is computed based on data received from the satellites. Errors depend on geometric dilution of precision and the sources listed in the table below. Overview User equivalent range errors (UERE) are shown in the table. There is also a numerical error with an estimated value, \ \sigma_ , of about . The standard deviations, \ \sigma_R, for the coarse/acquisition (C/A) and precise codes are also shown in the table. These standard deviations are computed by taking the square root of the sum of the squares of the individual components (i.e., RSS for root sum squares). To get the standard deviation of receiver position estimate, these range errors must be multiplied by the app ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Landmark
A landmark is a recognizable natural or artificial feature used for navigation, a feature that stands out from its near environment and is often visible from long distances. In modern use, the term can also be applied to smaller structures or features, that have become local or national symbols. Etymology In old English the word ''landmearc'' (from ''land'' + ''mearc'' (mark)) was used to describe a boundary marker, an "object set up to mark the boundaries of a kingdom, estate, etc.". Starting from approx. 1560, this understanding of landmark was replaced by a more general one. A landmark became a "conspicuous object in a landscape". A ''landmark'' literally meant a geographic feature used by explorers and others to find their way back or through an area. For example, the Table Mountain near Cape Town, South Africa is used as the landmark to help sailors to navigate around southern tip of Africa during the Age of Exploration. Artificial structures are also sometimes built to a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ordnance Survey
, nativename_a = , nativename_r = , logo = Ordnance Survey 2015 Logo.svg , logo_width = 240px , logo_caption = , seal = , seal_width = , seal_caption = , picture = , picture_width = , picture_caption = , formed = , preceding1 = , dissolved = , superseding = , jurisdiction = Great BritainThe Ordnance Survey deals only with maps of Great Britain, and, to an extent, the Isle of Man, but not Northern Ireland, which has its own, separate government agency, the Ordnance Survey of Northern Ireland. , headquarters = Southampton, England, UK , region_code = GB , coordinates = , employees = 1,244 , budget = , minister1_name = , minister1_pfo = , chief1_name = Steve Blair , chief1_position = CEO , agency_type = , parent_agency = , child1_agency = , keydocument1 = , website = , footnotes = , map = , map_width = , map_caption = Ordnance Survey (OS) is the national mapping agency for Great Britain. The agency's name indicates its original military purpose (se ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Norway
Norway, officially the Kingdom of Norway, is a Nordic country in Northern Europe, the mainland territory of which comprises the western and northernmost portion of the Scandinavian Peninsula. The remote Arctic island of Jan Mayen and the archipelago of Svalbard also form part of Norway. Bouvet Island, located in the Subantarctic, is a dependency of Norway; it also lays claims to the Antarctic territories of Peter I Island and Queen Maud Land. The capital and largest city in Norway is Oslo. Norway has a total area of and had a population of 5,425,270 in January 2022. The country shares a long eastern border with Sweden at a length of . It is bordered by Finland and Russia to the northeast and the Skagerrak strait to the south, on the other side of which are Denmark and the United Kingdom. Norway has an extensive coastline, facing the North Atlantic Ocean and the Barents Sea. The maritime influence dominates Norway's climate, with mild lowland temperatures on the se ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blue Switch Day
Blue is one of the three primary colours in the RYB colour model (traditional colour theory), as well as in the RGB (additive) colour model. It lies between violet and cyan on the spectrum of visible light. The eye perceives blue when observing light with a dominant wavelength between approximately 450 and 495 nanometres. Most blues contain a slight mixture of other colours; azure contains some green, while ultramarine contains some violet. The clear daytime sky and the deep sea appear blue because of an optical effect known as Rayleigh scattering. An optical effect called Tyndall effect explains blue eyes. Distant objects appear more blue because of another optical effect called aerial perspective. Blue has been an important colour in art and decoration since ancient times. The semi-precious stone lapis lazuli was used in ancient Egypt for jewellery and ornament and later, in the Renaissance, to make the pigment ultramarine, the most expensive of all pigments. In the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Location Of The First Geocache, East Of Portland
''The'' () is a grammatical article in English, denoting persons or things that are already or about to be mentioned, under discussion, implied or otherwise presumed familiar to listeners, readers, or speakers. It is the definite article in English. ''The'' is the most frequently used word in the English language; studies and analyses of texts have found it to account for seven percent of all printed English-language words. It is derived from gendered articles in Old English which combined in Middle English and now has a single form used with nouns of any gender. The word can be used with both singular and plural nouns, and with a noun that starts with any letter. This is different from many other languages, which have different forms of the definite article for different genders or numbers. Pronunciation In most dialects, "the" is pronounced as (with the voiced dental fricative followed by a schwa) when followed by a consonant sound, and as (homophone of the archaic pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Newsgroup
A Usenet newsgroup is a repository usually within the Usenet system, for messages posted from users in different locations using the Internet. They are discussion groups and are not devoted to publishing news. Newsgroups are technically distinct from, but functionally similar to, discussion forums on the World Wide Web. Newsreader software is used to read the content of newsgroups. Before the adoption of the World Wide Web, Usenet newsgroups were among the most popular Internet services, and have retained their noncommercial nature in contrast to the increasingly ad-laden web. In recent years, this form of open discussion on the Internet has lost considerable ground to individually-operated browser-accessible forums and big media social networks such as Facebook and Twitter. Communication is facilitated by the Network News Transfer Protocol (NNTP) which allows connection to Usenet servers and data transfer over the internet. Similar to another early (yet still used) protocol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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