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![]() ![]() 2) Uninstall the program by Start -> All programs -> Advanced SystemCare -> Uninstall Advanced SystemCare. IObit Uninstaller is a multi-talented uninstall tool that can completely remove applications from your hard drive, with none of the usual Registry clutter. IObit Uninstaller is a pretty average app for uninstalling your programs. 1) Exit your running Advanced SystemCare by clicking on the icon in system tray, right-click it and choosing 'Exit'. There's nothing too wrong with IObit Uninstaller, but if you're looking for an advanced uninstaller, you can do much better. In this article, we will show you how to download and install IObit Uninstaller Pro 9.2.0.13 using a torrent file, which is a peer-to-peer file sharing method. The next step is to click on uninstall, so you can initiate the uninstallation. Look for IObit Uninstaller in the list and click on it. Open the Start Menu and type Apps and Features. ![]() There's no help, you have to know where your sneaky programs are hiding in order to remove them, and the Clean PC option on the main interface is actually a link to download more software from the developer. Method 2: Uninstall IObit Uninstaller via Apps and Features/Programs and Features. IObit Uninstaller seemed to do an adequate job of removing programs, but it's nothing special. The main difference between Advanced Uninstaller's Standard and Advanced modes is that Advanced gives you the option of a "Powerful Scan" to remove all traces of the uninstalled program. To use Forced Uninstall, you'll need to specify the precise path to the file. IObit Uninstaller offers you three methods of removal - Standard or Advanced, and Forced Uninstall for really tricky programs. In this article, we will show you how to download and install IObit Uninstaller Pro 9.2.0.13 Torrent using a reliable torrent client and a crack file. In addition, IObit greatly improved their uninstall features and enlarged software database by 50 in IObit Uninstaller 11 Free. The Windows 10-compatible IObit Uninstaller (also available for Windows 8/7/Vista/XP) has a clean interface that makes navigating the applications three main sectionsPrograms, Toolbars & Plug. The categories listed to the left allow you to filter the programs by Recently Installed, Large Programs, Rarely Used and Windows Updates, which is a nice touch. Simultaneously IObit Uninstaller helps users powerfully uninstall malicious apps & browser extensions, remove leftovers, and update the outdated software to get rid of PC risks and deeply clean PCs. The app opens displaying a list of all the software installed on your computer. IObit Uninstaller is an uninstaller app to give you extra help when removing programs that are difficult to remove. Whats more, it can monitor malicious browser plug. It can easily and completely remove stubborn applications and their useless leftovers which might occupy much disk space. Softonic review Uninstall Windows programs IObit Uninstaller 5 is a FREE and effective system utility that delivers the easiest and fastest way to uninstall programs, browser toolbar & plug-ins and injected programs. ![]() Transducer and Piezo systems are more reliable than a soundhole pickup as their tone is easier to control and they aren't prone to feedback. A Piezo pickup has quite a bright and articulate sound as it picks up the vibrations of the saddle right under the strings whereas a transducer that goes under the soundboard will have a warmer tone with less definition. The result is a more direct sound with a strong attack and a distinctive 'quack' to tone. What Do Piezo and Transducer Pickups Sound Like?Īs transducer pickups convert physical vibrations into an electrical signal they won't pick up the body's resonance or any ambient sound. Other transducer pickups attach several transducer heads under the body top (soundboard) to pick up vibrations. ![]() The most common type of transducer is the Piezo system which sits between the bridge saddle and the bridge itself with vibrations from the string causing changes in pressure, changing the voltage of piezoelectric material. Transducer pickups work by converting physical vibrations into an electrical signal which can then be amplified. How Do Piezo and Transducer Pickups Work? Fitting it this way will result in a cable hanging out of the soundhole, if you want to hide it you may need to make some more significant mods. Most models simply fit onto your soundhole and then you just turn a couple of screws to tighten and plug it in. Magnetic soundhole pickups are really easy to install and can be fitted without making any permanent modifications to your guitar. Additioanlly, magnetic soundhole pickups don't work with nylon-strung acoustic guitars. A drawback of using a magnetic pickup on an acoustic guitar is that it can be prone to feedback which will need to be managed. Your guitar will still sound like an acoustic but it won't have the complexity and resonance of its unplugged tone. The problem with a soundhole pickup is that it doesn't capture the acoustic resonances inside the body itself. There's also the added benefit of an easy installation as you generally just have to drop them in and tighten a couple screws to fasten! Disadvantages Soundhole pickups are a great option as they provide great sonic warmth in comparison to a Piezo pickup, they're easy to control and they interact well with effects. Due to their construction, magnetic soundhole pickups have a sound that shares characteristics with an electric guitar pickup. ![]() Magnetic soundhole pickups have a warm and musical tone, with good string detail. What Does a Magnetic Soundhole Pickup Sound Like? This is identical to an electric guitar pickup. How Does a Magnetic Soundhole Pickup Work?Ī magnetic soundhole pickup works by wrapping an insulated copper wire around around a magnet, creating a magnetic field which is ‘disturbed’ by the vibration of a steel guitar string. ![]() You can maintain tree size through pot size and effective pruning. When fully mature the difference between Dwarf and Standard is only about 80% difference, it just takes dwarf longer to grow that large. If it is not listed as Dwarf then we either used a standard rootstock or semi dwarfing rootstock. If the variety says "Dwarf" then that variety is grafted to Flying Dragon. We use a handful of rootstock varieties for different reasons when we are grafted. We try hard to add inventory when it grows large enough, if a product shows as 0 available please click the notify button to be emailed as soon as we add inventory to the site. Need Assistance Please call 866-216-TREE (8733)Not Available in Alaska, Arizona, California, Florida, Hawaii, Louisiana or Texas. Through its 83. Oroblanco fruit is a cross between a grapefruit and a pummelo. ![]() Do you have anymore of these available? Oro Blanco ( BCS: ORO BLANCO) is an investment company based in Chile.We then grow those buds out and continuously harvest new buds and then sell young trees so we simply don't always end up with fruit to try so unless its listed, we don't know what they taste like. In most cases the original Budwood program we purchased Certified buds from does not offer much in the way of descriptions or taste information. We recommend removing fruit for the first couple years to allow the tree to focus on branching and growing roots. We graft with certified mature buds so our trees are capable of flowering and producing fruit in the first season, but will definitely flower and produce fruit in the second season. We aren't able to due to USDA restrictions, we wish we could but we can't. These are a few questions we are often asked and their answers: ![]() INSERT INTO vectors.embeddings (embedding) VALUES (ARRAY) ĮRROR: new row for relation "embeddings" violates check constraint "embeddings_embedding_check" You can create a function that performs the vector validation using the following example code: All the functions in the vector validation function are written either in C or Rust, so the performance overhead should be minimal. Currently, calling other stored functions from a PL/Rust function involves using the Server Programming Interface (SPI) in PostgreSQL, so for simplicity, we build the final vector validation using a SQL function. On a db.r6i.xlarge RDS for PostgreSQL instance, the preceding code took about 3 seconds to compile.įinally, we need to build a function that contains the four checks that determine if a PostgreSQL array is a valid vector. For example, the following code sums an array that contains the values 1, 2, and 3:ĬREATE OR REPLACE FUNCTION vectors.has_nulls(x float8) For more information on how to write Rust code for PL/Rust, see PL/Rust Functions.Ī PL/Rust function is run like any other PostgreSQL function. When the compilation is complete, a PL/Rust function is stored in an executable format and can be called from a SQL statement. PL/Rust functions only need to compile when they are created or any modifications are made to the code. On a db.m6i.xlarge RDS for PostgreSQL instance, this took about 3 seconds to compile. # For PostgreSQL 15.3 and higher versionsĬREATE OR REPLACE FUNCTION public.array_sum(x float8) Using the AWS Command Line Interface (AWS CLI), you can create a DB parameter group that adds plrust to the shared_preload_libraries parameter: Additionally, you’ll need to add plrust to the shared_preload_libraries parameter into a DB parameter group and assign the DB parameter group to your database instance. ![]() To run the examples in this post, you’ll need to provision an RDS for PostgreSQL instance or Multi-AZ DB cluster running PostgreSQL 15.2 or higher. We also look at a use case that involves a lot of computations, and see how writing it in PL/Rust compares to PL/pgSQL and PL/v8 (JavaScript). In this post, we show how to deploy an RDS for PostgreSQL instance with PL/Rust enabled, and review several examples for how to write high-performance Rust code directly in your database. Also, all of these languages are interpreted, which means that there may be performance overhead when executing functions written in these languages. For example, PL/pgSQL, PostgreSQL’s native procedural language, is convenient for writing trigger functions and multi-step procedures that may interface with built-in PostgreSQL functions. Each programming language has benefits, and choosing a language may come down to what problem you’re solving or your familiarity with the programming language. In addition to PL/Rust, Amazon RDS for PostgreSQL supports several trusted programming languages, including PL/pgSQL, PL/Perl, PL/v8 (JavaScript), and PL/Tcl. The property of being a “trusted” programming language in PostgreSQL makes it possible to build Trusted Language Extensions for PostgreSQL, using the open-source pg_tle project, and safely run them in production systems. PostgreSQL designates languages as “trusted” or “untrusted,” where a “trusted” language is safe for an unprivileged user to use without risk of privilege escalation. PostgreSQL gives developers choices in what programming languages you can use through its procedural language system, and the open-source community maintains a wiki page that lists available procedural languages. Stored procedures in databases help developers build code that can perform calculations on data and reduce latency to the application, apply follow-up actions on data modifications, and simplify data visualization. For more information on how PL/Rust works, see the PL/Rust Guide. You can also use PL/Rust to build Trusted Language Extensions for PostgreSQL with performance benefits that are comparable to writing code in C without the risk of unsafe memory access. PL/Rust is an open-source project that lets you write Rust code that runs directly inside a PostgreSQL database, and provides support for PostgreSQL features such as running queries, writing trigger functions, and logging output. Amazon Relational Database Service (Amazon RDS) for PostgreSQL now supports trusted PL/Rust, allowing developers to safely build high-performance database functions in the Rust programming language. It’s not simply the fact that these scenes constitute two disparate points in the vast constellation of incident and intrigue that comprise this paranoid odyssey rather, Anderson enhances the audience’s hazy reception of his story through sabotaging-whether consciously or otherwise-several of the primary ways in which viewers receive and process stories, including (but by no means limited to) the counterintuitive task of processing dialogue delivered within relatively static shots of extended duration. ![]() These two encounters slip through one’s fingers like a cloud of pot smoke. Neither of Coy’s scenes is particularly dense with plot detail, but viewers may nevertheless find themselves struggling to grasp precisely what has been discussed by the time he has left the screen. In the first, he enters the frame to join Doc, they speak for approximately two and a half minutes, and then Coy exits again in the second, Doc enters the frame to join Coy, they speak for approximately four and a half minutes, and then Coy exits, leaving Doc alone. In both cases, Coy’s appearance is contained within one sustained shot. In the first, soon after Doc has been hired by Coy’s wife, Hope, to investigate his whereabouts, Coy emerges on a fog-cloaked pier to ask that Doc keep an eye on Hope and their daughter, Amethyst, and provides a minor clue as to the significance of the words “Golden Fang.” In the second, Doc finds Coy at a house party, where the anxious and paranoid Coy bemoans his self-imposed alienation from his family and urges Doc to find Shasta before she is enmeshed in the same morass that he is. Across the nearly two-and-a-half-hour sprawl of Inherent Vice, Coy Harlingen, surf rock saxophonist and heroin addict turned CIA asset, appears in two centerpiece scenes. though he's amiable enough, keeps cracking jokes back through the loudspeaker. Living inside the System is like riding across the country in a bus driven by a maniac bent on suicide. And that time is an artificial resource to begin with, of no value to anyone or anything but the System, which must sooner or later crash to its death, when its addiction to energy has become more than the rest of the World can supply, dragging with it innocent souls all along the chain of life. The System may or may not understand that it's only buying time. ![]() Taking and not giving back, demanding that "productivity" and "earnings" keep on increasing with time, the System removing from the rest of the World these vast quantities of energy to keep its own tiny desperate fraction showing a profit: and not only most of humanity-most of the World, animal, vegetable, and mineral, is laid waste in the process. The Serpent that announces, "The World is a closed thing, cyclical, resonant, eternally-returning," is to be delivered into a system whose only aim is to violate the Cycle. But the meanness, the cynicism with which this dream is to be used. “Kekulé dreams the Great Serpent holding its own tail in its mouth, the dreaming Serpent which surrounds the World. On July 19, a single ticket in California matched all five numbers plus the Powerball to win $1.08 billion, the largest jackpot since the record-setting $2.04 billion in November. On Aug. In less than two months, this lottery grand prize has increased from $20 million to the current pot. These rollovers follow a recent summer lotto frenzy after someone in California won the Powerball jackpot for $1.08 billion and someone in Neptune Beach, Florida, won the largest Mega Millions jackpot in the history of the game at $1.58 billion. (Two winners from California and Wisconsin split that $632.6 million prize.) The latest jackpot still is in the Top 10 spot of largest Powerball prizes in the history of the game. 5, 2022, total of $632.6 million from the Top 10 biggest jackpots list in Powerball. Monday's sum of $638 million knocked the Jan. In a week, the grand prize increased from more than $630 million (Monday, Sept. Ticket sales for that end an hour before the drawing. ![]() Franco to quit his job within two days of winning.In case you're wondering, Saturday numbers were 1-12-20-33-66 and the Powerball was 21. Manuel Franco of Wisconsin won a $768.4 million prize in the Powerball drawing on March 27, 2019. 22, 2021, after buying a ticket in Novi, Mich. $1.05 billionĪ group identified as the Wolverine FLL Club of Oakland County won just over $1 billion in the Mega Millions drawing on Jan. ![]() The winner could opt to take the payment as a lump sum, which would be about $558.1 million before taxes, according to Powerball. It was the second time in eight months that a winning ticket for a jackpot of more than $1 billion was sold in Los Angeles County. $1.08 billionĪfter three months without a winner, a single ticket sold in Los Angeles won the Powerball jackpot on July 19. Illinois is one of several states that allow lottery winners to keep their names and addresses confidential. After several weeks, an anonymous winner came forward. The winning Mega Millions ticket on July 29, 2022, was sold in Des Plaines, Ill. The person collected the prize, through a limited liability company, as a single cash payment of $723,564,144 before taxes. A winner came forward a month later but chose to remain anonymous, officials said. $1.35 billionĪ single ticket sold in Lebanon, Maine, won an estimated $1.35 billion in the Mega Millions drawing this past Jan. The prize was not claimed until March of the following year, when an anonymous winner came forward through a lawyer, opting for a one-time lump sum of $877,784,124 instead of taking payments over 30 years. $1.54 billionĪ single ticket sold in Simpsonville, S.C., won a Mega Millions jackpot on Oct. 25, but the person’s identity had not been released because state law allows anonymity for up to 90 days, until the prize is claimed, lottery officials said. The winning ticket was one of more than seven million winning ones sold across all prize levels, including two tickets worth $2 million each that were sold in Florida and North Carolina, the company said in a statement.Ī winner came forward on Sept. ![]() Taken as a single, after-tax cash payout, the prize would be $783.3 million. This was the Mega Millions jackpot that was won on Aug. “I think we can all live on $528 million, don’t you think?” Russ Lopez, a spokesman for the California Lottery, said at the time. 13, 2016, matching tickets bought in Chino Hills, Calif., a suburb of Los Angeles Munford, Tenn., north of Memphis and Melbourne Beach, Fla., on the Atlantic Coast. The third-biggest jackpot, also a Powerball, was split three ways. The next drawing will be on Wednesday night at 10:59 p.m. Taken as a cash payout instead of an annuity, it would be worth $756.6 million before taxes. This is the current Powerball jackpot, which no one has won since July 19 (see the No. 14, California Lottery officials revealed the name of the winner, Edwin Castro, but did not release further information about him at his request. The ticket was sold at Joe’s Service Center in Altadena, Calif., just north of Pasadena. The largest lottery jackpot to date, a Powerball drawing, was won on Nov. Let’s turn our attention to some additional considerations dealing with scaffolding preplanning, the erection of a scaffold, and safety training. When workers use personal fall arrest systems, they need to know where to anchor. A personal fall arrest and active restraint system consists of an anchorage point, body belt or body harness, D-rings, and may include a lanyard, lifeline, deceleration device or a combination of these. For scaffold safety, workers should use a personal fall arrest system. Workers frequently reach out beyond fall protection barriers for equipment or to complete tasks. Properly installed guardrails provide fall protection compliance on an appropriately decked or planked scaffold. In addition, workers access the scaffold platform in the form of a secured ladder, stair tower, or ramp. Why? The purpose is to prevent items from falling, and thereby protecting workers on lower levels. OSHA requires toeboard installation on work platforms, screens, nets, or barricades. If any cross brace is used to support the top rail for the guardrail, then cross bracing should reach the height of between 38 and 45 inches. Guardrails are to be between 38 inches and 45 inches in height, and installation of midrails at about half that height. 451 (g)(1)(ii)Įquip scaffolding with toeboards, midrails, and guardrails. Further, “Each employee on a single-point and two-point adjustable suspended scaffold shall be protected by both a personal fall arrest system and a guardrail.”. passive fall protection.Įmployees more than 10 feet above a lower level need protection from falls by guardrails or a fall arrest system, except those on single-point and two-point adjustable suspension scaffolds. The conversation about the responsibility of the worker and protection measures that remain in place is discussed further here: the difference between active vs. So, the result is worker injury and possibly fatality. The lack of guardrails, improperly installed guardrails, or failure to use personal fall arrest systems cause falls. Scaffolding work and scaffold hazards present various fall prevention concerns. In addition to working height thresholds, there are other OSHA scaffolding requirements to keep workers safe while working on a scaffold. When dealing with scaffolding safety, the vertical standard overrules the horizontal standard. Vertical standards (Subpart L) specifies that for scaffolding safety, fall protection must be present at a threshold of 10 feet. Horizontal standards (Subpart M) specify that in the construction industry, fall protection must be present at 6 feet of height. ![]() On the other hand, Subpart L: Scaffolding is a more specific vertical OSHA standard. Regulations such as Subpart M: Fall Protection involve a broad general horizontal standard which applies to any industry. Some OSHA regulations deal with horizontal standards and some deal with vertical standards. ![]() Next, let’s examine some OSHA scaffolding requirements for fall protection. Scaffold users can be placed into three groups: scaffold erector/dismantler, user, and designer. Note that other types of equipment such as scissor lifts and aerial lifts can be thought of as other types of supported scaffolds. (See this product for rigid rail fall protection.) Suspended scaffolds: consists of one or more platforms suspended by non-rigid overhead support.Supported scaffold: consists of one or more platforms supported by load-bearing poles, legs, frames, or outriggers.There are two types of scaffolds, which include the following: It’s important to take into consideration the type of scaffolding used at the construction site, industry, or manufacturing environments. Scaffold TypesĪccording to OSHA, a scaffold is defined as “an elevated, temporary work platform”. Scaffolding safety includes dedicated actions when planning, building, inspecting, and using scaffolds.įirst, let’s discuss scaffold types. Yet the main goal is that the scaffolding structure is safe and secure. There are various OSHA regulations which apply to different types of scaffolding systems. ![]() There’s little surprise that scaffolding violations makes OSHA’s top ten list of most frequently cited violations. According to the Bureau of Labor Statistics, each year there are about 4,500 injuries and more than 60 fatalities related to scaffolding. The use of scaffolding is one of most common causes of these incidents. Those in construction and general industry see some of the highest injury and fatality rates. ![]() Research has shown that this method of instruction greatly improved their mathematical abilities and comprehension, enabling them to outperform their western counterparts. Moving into the modern eraįor centuries, schoolchildren in the Chinese‐speaking world, South Korea, and Japan learned zhusuan in their mathematics class. The most popular style of Japanese abacus (soropan) is the 1/4, which is still manufactured there.īy the end of the Ming dynasty, the book spread to Southeast Asia, Europe and the Americas, becoming the global foundation for developing the abacus. Each year a celebration is held there on 8 August to remember him. ![]() It reached Japan in 1600, pioneering the use of the abacus in that country. ![]() With more than 100 editions printed around the world, Cheng’s book continued to influence mathematics and promote the spread of zhusuan for centuries. The book, which analyses 595 problems over 12 chapters, played a pivotal role in systematising and popularising zhusuan. He published General Source of Computational Methods, an arithmetic guide for the abacus, in 1592. One of the most famous Chinese scholars of the abacus was Cheng Dawei (1533–1606). This was the 2/5 abacus and remained in common use until the 1850s when a 1/4 abacus went into production. The upper deck, known as heaven, carried two beads per rod or wire, each with a value of five, The lower deck, known as earth, carried five beads per rod or wire, each with a value of one. Beads were attached to each wire or rod, organized into an upper and lower deck. Suanpan were typically constructed of bamboo with seven or more fixed wires or wooden rods affixed to metal reinforcements. ![]() Close-up of an abacus | Photo by António Sanmarful It was the most advanced number system in the world at the time, enabling calculations on number rods, and eventually, on suanpan. The earliest surviving evidence of mathematics dates from the Shang Dynasty (1600–1046 BC) in the form of numbers scratched into tortoise shells. Zhusuan likely predates the invention of the decimal system by Indian mathematicians between the first and fourth centuries AD, and builds on a long tradition of mathematical innovation in China. Published in 190 AD, the book also introduced zhusuan as a method for performing mathematical calculations with an abacus. The earliest record of the Chinese abacus, known as suanpan (counting tray), is an illustration from Supplementary Notes on the Art of Figures by Xu Yue. Many early civilisations, including the Babylonians and Egyptians, utilised a rudimentary form of the abacus, but it was the Persians who exported the abacus to Europe and Asia. The abacus is the oldest and most widely used tool for calculation in the world, appearing in Mesopotamia as early as 2700– 2300 BC. In 2013, the United Nations Educational, Scientific and Cultural Organisation (UNESCO), recognising the broad cultural impact and symbolic resonance of zhusuan-and by extension, the abacus-officially listed Chinese zhusuan as an intangible cultural heritage element. While the origin of the abacus itself remains unknown, China can claim the best and most widespread method for using it: zhusuan. Many factors contribute to the staying power of this ancient device – it’s cheap to produce, easy to use, and requires no electricity-but perhaps the most significant is the same factor that has cemented its place in Chinese culture. Kong and Macao, particularly those selling traditional Chinese medicine, use abacuses, and it is much the same in Chinatowns in North America. The abacus has been used in China for millennia, and although its popularity has declined since the invention of hand‐held electronic calculators in the 1970s, it remains in widespread use among traders and clerks in Asia and Africa, in shops, restaurants and street stalls. The abacus has been a tool of calculation widely used in China for nearly 2,000 years, and it is still alive in Macao. Pacific Standard Time, or UTC-8, is the standard time from eastern Nevada to the west coast. Just like the other time zones, this time zone is often referred to as Mountain Time. Mountain Standard Time, or UTC-7, is used from central South Dakota to western Idaho. ![]() This is generally referred to as Central Time, which is the general term for both CST and the same time zone during daylight saving time. Central Standard Time (CST or CT)Ĭentral Standard Time, or UTC-6, is the time zone that goes from central Kentucky to west Texas. Eastern Time or ET is the catch-all term for Eastern Standard Time and Eastern Daylight Saving Time (which we will get to a minute). Fun fact: there is also an Australian Eastern Standard Time, at UTC+10.Īmerica’s time zone is colloquially known as Eastern Time. In the United States, Eastern Standard Time, or UTC-5, stretches from the East Coast to western Indiana. In 1883, America adopted four time zones to be used by railways (and therefore everyone else): Eastern Standard Time (EST or ET) Instead, they use a homemade alphabet soup of acronyms. Americans don’t use the GMT or UTC format for labeling time zones. Making sense of American time zonesĮverything in America is a little different, including our time zone lingo. Unless you’re navigating a boat or conducting scientific research, the differences between GMT and UTC would be imperceptible to you. ( Typique.) Coordinated Universal Time in French is universel temps coordonné or, in other words, UTC. ![]() Well, that’s because in order to get the French on board with the system, it was decided the name would be given in French and English. You might be wondering why the acronym for Coordinated Universal Time is UTC and not CUT. It is coordinated and universal because it is used around the world. What is Coordinated Universal Time (UTC)?įor complicated reasons that have to do with the rotation of the Earth and advancements in measurements in time, scientists in the 1960s introduced a more sophisticated and precise time standard known as Coordinated Universal Time. And so on, so that there are in total 24 potential time zones around the world … although some places, like China, set their own rules. In France, 15⁰ degrees east across the channel, it is GMT+1, indicating that the standard time in France is one hour ahead of the standard time in England. The name for England’s time zone is GMT+0. In 1884, the International Meridian Conference agreed that GMT was going to be the benchmark for all time zones around the world. The first public declaration of Greenwich Mean Time, or GMT, was made in 1833. It was decided that the mean time-in other words, the time after correcting for changes in the apparent lengths of days caused by the Earth’s rotation around the sun-in Greenwich at the prime meridian was going to be the standard. Up until then, towns and regions were able to set their own time as they saw fit. The UK was in need of a standard time to keep the trains running on schedule. The prime meridian is the longitude (line stretching north to south) that is considered the anchor or central point of a map, labeled 0⁰.įast forward to the 1800s. In 1721, the Royal Observatory began to use Greenwich as the location for the UK’s prime meridian in map making and navigation systems. That’s when the Royal Observatory in Greenwich (pronounced ) was commissioned by King Charles II for the purpose of studying cartography, geography, meteorology, and related subjects (including time). To understand how we ended up with the time zones we are familiar with today, we need to go all the way back to 1675. But how were these time zones decided upon? Who declared Greenwich Mean Time (GMT)? Within a time zone, everyone has the same time. ![]() Time zones were first established in the UK and elsewhere in the mid-1800s, largely in response to new communication methods such as the telegraph, and new steam engines on trains and boats that accelerated travel. S tandard refers to the fact that it is the official time in that area. First of all, what is a time zone?Ī time zone is a geographic area, typically 15⁰ longitude wide, that shares the same standard time. Let’s synchronize our watches and cover some of the key lingo related to time zones. Amazing!īut, even though we don’t need to pay as much attention to time zones these days, that doesn’t mean they don’t still impact our lives. Another benefit of this technology? The clock on our smartphone automatically changes when we enter a new time zone. We all have clocks in our pockets-our smartphones. |
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