Aspect ratio (image)
The aspect ratio of an image describes the proportional relationship between its width and its height. It is expressed as two numbers separated by a colon, as in 16:9. For an x:y aspect ratio, no matter how big or small the image is, if the width is divided into x units of equal length and the height is measured using this same length unit, the height will be measured to be y units. For example, in a group of images that all have an aspect ratio of 16:9, one image might be 16 inches wide and 9 inches high, another 16 centimeters wide and 9 centimeters high, a third might be 8 yards wide and 4.5 yards high. Thus, aspect ratio concerns the relationship of the width to the height, not an image's actual size; the most common aspect ratios used today in the presentation of films in cinemas are 1.85:1 and 2.39:1. Two common videographic aspect ratios are 4:3, the universal video format of the 20th century, 16:9, universal for high-definition television and European digital television. Other cinema and video aspect ratios are used infrequently.
In still camera photography, the most common aspect ratios are 4:3, 3:2, more found in consumer cameras, 16:9. Other aspect ratios, such as 5:3, 5:4, 1:1, are used in photography as well in medium format and large format. With television, DVD and Blu-ray Disc, converting formats of unequal ratios is achieved by enlarging the original image to fill the receiving format's display area and cutting off any excess picture information, by adding horizontal mattes or vertical mattes to retain the original format's aspect ratio, by stretching the image to fill the receiving format's ratio, or by scaling by different factors in both directions scaling by a different factor in the center and at the edges. In motion picture formats, the physical size of the film area between the sprocket perforations determines the image's size; the universal standard is a frame, four perforations high. The film itself is 35 mm wide, but the area between the perforations is 24.89 mm × 18.67 mm, leaving the de facto ratio of 4:3, or 1.3:1.
With a space designated for the standard optical soundtrack, the frame size reduced to maintain an image, wider than tall, this resulted in the Academy aperture of 22 mm × 16 mm or 1.375:1 aspect ratio. The motion picture industry convention assigns a value of 1.0 to the image's height. After 1952, a number of aspect ratios were experimented with for anamorphic productions, including 2.66:1 and 2.55:1. A SMPTE specification for anamorphic projection from 1957 standardized the aperture to 2.35:1. An update in 1970 changed the aspect ratio to 2.39:1. This aspect ratio of 2.39:1 was confirmed by the most recent revision from August 1993. In American cinemas, the common projection ratios are 1.85:1 and 2.39:1. Some European countries have 1.6:1 as the wide screen standard. The "Academy ratio" of 1.375:1 was used for all cinema films in the sound era until 1953. During that time, which had a similar aspect ratio of 1.3:1, became a perceived threat to movie studios. Hollywood responded by creating a large number of wide-screen formats: CinemaScope, Todd-AO, VistaVision to name just a few.
The "flat" 1.85:1 aspect ratio was introduced in May 1953, became one of the most common cinema projection standards in the U. S. and elsewhere. The goal of these various lenses and aspect ratios was to capture as much of the frame as possible, onto as large an area of the film as possible, in order to utilize the film being used; some of the aspect ratios were chosen to utilize smaller film sizes in order to save film costs while other aspect ratios were chosen to use larger film sizes in order to produce a wider higher resolution image. In either case the image was squeezed horizontally to fit the film's frame size and avoid any unused film area. Development of various film camera systems must cater to the placement of the frame in relation to the lateral constraints of the perforations and the optical soundtrack area. One clever wide screen alternative, VistaVision, used standard 35 mm film running sideways through the camera gate, so that the sprocket holes were above and below frame, allowing a larger horizontal negative size per frame as only the vertical size was now restricted by the perforations.
There were a limited number of projectors constructed to run the print-film horizontally. However, the 1.50:1 ratio of the initial VistaVision image was optically converted to a vertical print to show with the standard projectors available at theaters, was masked in the projector to the US standard of 1.85:1. The format was revived by Lucasfilm in the late 1970s for special effects work that required larger negative size, it went into obsolescence due to better cameras and film stocks available to standard four-perforation formats, in addition to increased lab costs of making prints in comparison to more standard vertical processes. Super 16 mm film was used for televisi
The United States of America known as the United States or America, is a country composed of 50 states, a federal district, five major self-governing territories, various possessions. At 3.8 million square miles, the United States is the world's third or fourth largest country by total area and is smaller than the entire continent of Europe's 3.9 million square miles. With a population of over 327 million people, the U. S. is the third most populous country. The capital is Washington, D. C. and the largest city by population is New York City. Forty-eight states and the capital's federal district are contiguous in North America between Canada and Mexico; the State of Alaska is in the northwest corner of North America, bordered by Canada to the east and across the Bering Strait from Russia to the west. The State of Hawaii is an archipelago in the mid-Pacific Ocean; the U. S. territories are scattered about the Pacific Ocean and the Caribbean Sea, stretching across nine official time zones. The diverse geography and wildlife of the United States make it one of the world's 17 megadiverse countries.
Paleo-Indians migrated from Siberia to the North American mainland at least 12,000 years ago. European colonization began in the 16th century; the United States emerged from the thirteen British colonies established along the East Coast. Numerous disputes between Great Britain and the colonies following the French and Indian War led to the American Revolution, which began in 1775, the subsequent Declaration of Independence in 1776; the war ended in 1783 with the United States becoming the first country to gain independence from a European power. The current constitution was adopted in 1788, with the first ten amendments, collectively named the Bill of Rights, being ratified in 1791 to guarantee many fundamental civil liberties; the United States embarked on a vigorous expansion across North America throughout the 19th century, acquiring new territories, displacing Native American tribes, admitting new states until it spanned the continent by 1848. During the second half of the 19th century, the Civil War led to the abolition of slavery.
By the end of the century, the United States had extended into the Pacific Ocean, its economy, driven in large part by the Industrial Revolution, began to soar. The Spanish–American War and World War I confirmed the country's status as a global military power; the United States emerged from World War II as a global superpower, the first country to develop nuclear weapons, the only country to use them in warfare, a permanent member of the United Nations Security Council. Sweeping civil rights legislation, notably the Civil Rights Act of 1964, the Voting Rights Act of 1965 and the Fair Housing Act of 1968, outlawed discrimination based on race or color. During the Cold War, the United States and the Soviet Union competed in the Space Race, culminating with the 1969 U. S. Moon landing; the end of the Cold War and the collapse of the Soviet Union in 1991 left the United States as the world's sole superpower. The United States is the world's oldest surviving federation, it is a representative democracy.
The United States is a founding member of the United Nations, World Bank, International Monetary Fund, Organization of American States, other international organizations. The United States is a developed country, with the world's largest economy by nominal GDP and second-largest economy by PPP, accounting for a quarter of global GDP; the U. S. economy is post-industrial, characterized by the dominance of services and knowledge-based activities, although the manufacturing sector remains the second-largest in the world. The United States is the world's largest importer and the second largest exporter of goods, by value. Although its population is only 4.3% of the world total, the U. S. holds 31% of the total wealth in the world, the largest share of global wealth concentrated in a single country. Despite wide income and wealth disparities, the United States continues to rank high in measures of socioeconomic performance, including average wage, human development, per capita GDP, worker productivity.
The United States is the foremost military power in the world, making up a third of global military spending, is a leading political and scientific force internationally. In 1507, the German cartographer Martin Waldseemüller produced a world map on which he named the lands of the Western Hemisphere America in honor of the Italian explorer and cartographer Amerigo Vespucci; the first documentary evidence of the phrase "United States of America" is from a letter dated January 2, 1776, written by Stephen Moylan, Esq. to George Washington's aide-de-camp and Muster-Master General of the Continental Army, Lt. Col. Joseph Reed. Moylan expressed his wish to go "with full and ample powers from the United States of America to Spain" to seek assistance in the revolutionary war effort; the first known publication of the phrase "United States of America" was in an anonymous essay in The Virginia Gazette newspaper in Williamsburg, Virginia, on April 6, 1776. The second draft of the Articles of Confederation, prepared by John Dickinson and completed by June 17, 1776, at the latest, declared "The name of this Confederation shall be the'United States of America'".
The final version of the Articles sent to the states for ratification in late 1777 contains the sentence "The Stile of this Confederacy shall be'The United States of America'". In June 1776, Thomas Jefferson wrote the phrase "UNITED STATES OF AMERICA" in all capitalized letters in the headline of his "original Rough draught" of the Declaration of Independence; this draft of the document did not surface unti
CBS is an American English language commercial broadcast television and radio network, a flagship property of CBS Corporation. The company is headquartered at the CBS Building in New York City with major production facilities and operations in New York City and Los Angeles. CBS is sometimes referred to as the Eye Network, in reference to the company's iconic symbol, in use since 1951, it has been called the "Tiffany Network", alluding to the perceived high quality of CBS programming during the tenure of William S. Paley, it can refer to some of CBS's first demonstrations of color television, which were held in a former Tiffany & Co. building in New York City in 1950. The network has its origins in United Independent Broadcasters Inc. a collection of 16 radio stations, purchased by Paley in 1928 and renamed the Columbia Broadcasting System. Under Paley's guidance, CBS would first become one of the largest radio networks in the United States, one of the Big Three American broadcast television networks.
In 1974, CBS dropped its former full name and became known as CBS, Inc. The Westinghouse Electric Corporation acquired the network in 1995, renamed its corporate entity to the current CBS Broadcasting, Inc. in 1997, adopted the name of the company it had acquired to become CBS Corporation. In 2000, CBS came under the control of Viacom, formed as a spin-off of CBS in 1971. In late 2005, Viacom split itself into two separate companies and re-established CBS Corporation – through the spin-off of its broadcast television and select cable television and non-broadcasting assets – with the CBS television network at its core. CBS Corporation is controlled by Sumner Redstone through National Amusements, which controls the current Viacom. CBS operated the CBS Radio network until 2017, when it merged its radio division with Entercom. Prior to CBS Radio provided news and features content for its portfolio owned-and-operated radio stations in large and mid-sized markets, affiliated radio stations in various other markets.
While CBS Corporation owns a 72% stake in Entercom, it no longer owns or operates any radio stations directly, though CBS still provides radio news broadcasts to its radio affiliates and the new owners of its former radio stations. The television network has more than 240 owned-and-operated and affiliated television stations throughout the United States; the company ranked 197th on the 2018 Fortune 500 of the largest United States corporations by revenue. The origins of CBS date back to January 27, 1927, with the creation of the "United Independent Broadcasters" network in Chicago by New York City talent-agent Arthur Judson; the fledgling network soon needed additional investors though, the Columbia Phonograph Company, manufacturers of Columbia Records, rescued it in April 1927. Columbia Phonographic went on the air on September 18, 1927, with a presentation by the Howard L. Barlow Orchestra from flagship station WOR in Newark, New Jersey, fifteen affiliates. Operational costs were steep the payments to AT&T for use of its land lines, by the end of 1927, Columbia Phonograph wanted out.
In early 1928 Judson sold the network to brothers Isaac and Leon Levy, owners of the network's Philadelphia affiliate WCAU, their partner Jerome Louchheim. None of the three were interested in assuming day-to-day management of the network, so they installed wealthy 26-year-old William S. Paley, son of a Philadelphia cigar family and in-law of the Levys, as president. With the record company out of the picture, Paley streamlined the corporate name to "Columbia Broadcasting System", he believed in the power of radio advertising since his family's "La Palina" cigars had doubled their sales after young William convinced his elders to advertise on radio. By September 1928, Paley bought out the Louchhheim share of CBS and became its majority owner with 51% of the business. During Louchheim's brief regime, Columbia paid $410,000 to A. H. Grebe's Atlantic Broadcasting Company for a small Brooklyn station, WABC, which would become the network's flagship station. WABC was upgraded, the signal relocated to 860 kHz.
The physical plant was relocated – to Steinway Hall on West 57th Street in Manhattan, where much of CBS's programming would originate. By the turn of 1929, the network could boast to sponsors of having 47 affiliates. Paley moved right away to put his network on a firmer financial footing. In the fall of 1928, he entered into talks with Adolph Zukor of Paramount Pictures, who planned to move into radio in response to RCA's forays into motion pictures with the advent of talkies; the deal came to fruition in September 1929: Paramount acquired 49% of CBS in return for a block of its stock worth $3.8 million at the time. The agreement specified that Paramount would buy that same stock back by March 1, 1932 for a flat $5 million, provided CBS had earned $2 million during 1931 and 1932. For a brief time there was talk that the network might be renamed "Paramount Radio", but it only lasted a month – the 1929 stock market crash sent all stock value tumbling, it galvanized Paley and his troops, who "had no alternative but to turn the network around and earn the $2,000,000 in two years....
This is the atmosphere in which the CBS of today was born." The near-bankrupt movie studio sold its CBS shares back to CBS in 1932. In the first year of Paley's wa
American Broadcasting Company
The American Broadcasting Company is an American commercial broadcast television network, a flagship property of Walt Disney Television, a subsidiary of the Disney Media Networks division of The Walt Disney Company. The network is headquartered in Burbank, California on Riverside Drive, directly across the street from Walt Disney Studios and adjacent to the Roy E. Disney Animation Building, But the network's second corporate headquarters and News headquarters remains in New York City, New York at their broadcast center on 77 West 66th Street in Lincoln Square in Upper West Side Manhattan. Since 2007, when ABC Radio was sold to Citadel Broadcasting, ABC has reduced its broadcasting operations exclusively to television; the fifth-oldest major broadcasting network in the world and the youngest of the Big Three television networks, ABC is nicknamed as "The Alphabet Network", as its initialism represents the first three letters of the English alphabet, in order. ABC launched as a radio network on October 12, 1943, serving as the successor to the NBC Blue Network, purchased by Edward J. Noble.
It extended its operations to television in 1948, following in the footsteps of established broadcast networks CBS and NBC. In the mid-1950s, ABC merged with United Paramount Theatres, a chain of movie theaters that operated as a subsidiary of Paramount Pictures. Leonard Goldenson, the head of UPT, made the new television network profitable by helping develop and greenlight many successful series. In the 1980s, after purchasing an 80 percent interest in cable sports channel ESPN, the network's corporate parent, American Broadcasting Companies, Inc. merged with Capital Cities Communications, owner of several print publications, television and radio stations. In 1996, most of Capital Cities/ABC's assets were purchased by The Walt Disney Company; the television network has eight owned-and-operated and over 232 affiliated television stations throughout the United States and its territories. Some of the ABC-affiliated stations can be seen in Canada via pay-television providers, certain other affiliates can be received over-the-air in areas within the Canada–United States border.
ABC News provides news and features content for select radio stations owned by Citadel Broadcasting, which purchased the ABC Radio properties in 2007. In the 1930s, radio in the United States was dominated by three companies: the Columbia Broadcasting System, the Mutual Broadcasting System, the National Broadcasting Company; the last was owned by electronics manufacturer Radio Corporation of America, which owned two radio networks that each ran different varieties of programming, NBC Blue and NBC Red. The NBC Blue Network was created in 1927 for the primary purpose of testing new programs on markets of lesser importance than those served by NBC Red, which served the major cities, to test drama series. In 1934, Mutual filed a complaint with the Federal Communications Commission regarding its difficulties in establishing new stations, in a radio market, being saturated by NBC and CBS. In 1938, the FCC began a series of investigations into the practices of radio networks and published its report on the broadcasting of network radio programs in 1940.
The report recommended that RCA give up control of either NBC NBC Blue. At that time, the NBC Red Network was the principal radio network in the United States and, according to the FCC, RCA was using NBC Blue to eliminate any hint of competition. Having no power over the networks themselves, the FCC established a regulation forbidding licenses to be issued for radio stations if they were affiliated with a network which owned multiple networks that provided content of public interest. Once Mutual's appeals against the FCC were rejected, RCA decided to sell NBC Blue in 1941, gave the mandate to do so to Mark Woods. RCA converted the NBC Blue Network into an independent subsidiary, formally divorcing the operations of NBC Red and NBC Blue on January 8, 1942, with the Blue Network being referred to on-air as either "Blue" or "Blue Network"; the newly separated NBC Red and NBC Blue divided their respective corporate assets. Between 1942 and 1943, Woods offered to sell the entire NBC Blue Network, a package that included leases on landlines, three pending television licenses, 60 affiliates, four operations facilities, contracts with actors, the brand associated with the Blue Network.
Investment firm Dillon, Read & Co. offered $7.5 million to purchase the network, but the offer was rejected by Woods and RCA president David Sarnoff. Edward J. Noble, the owner of Life Savers candy, drugstore chain Rexall and New York City radio station WMCA, purchased the network for $8 million. Due to FCC ownership rules, the transaction, to include the purchase of three RCA stations by Noble, would require him to resell his station with the FCC's approval; the Commission authorized the transaction on October 12, 1943. Soon afterward, the Blue Network was purchased by the new company Noble founded, the American Broadcasting System. Noble subsequently acquired the rights to the American Broadcasting Company name from George B. Storer in 1944. Meanwhile, in August 1944, the West Coast division of the Blue Network, which owned San Francisco radio station KGO, bought Los Angeles station KECA f
Tucson is a city and the county seat of Pima County, United States, home to the University of Arizona. The 2010 United States Census put the population at 520,116, while the 2015 estimated population of the entire Tucson metropolitan statistical area was 980,263; the Tucson MSA forms part of the larger Tucson-Nogales combined statistical area, with a total population of 1,010,025 as of the 2010 Census. Tucson is the second-largest populated city in Arizona behind Phoenix, both of which anchor the Arizona Sun Corridor; the city is 108 miles southeast of Phoenix and 60 mi north of the U. S.–Mexico border. Tucson is the 58th largest metropolitan area in the United States. Major incorporated suburbs of Tucson include Oro Valley and Marana northwest of the city, Sahuarita south of the city, South Tucson in an enclave south of downtown. Communities in the vicinity of Tucson include Casas Adobes, Catalina Foothills, Flowing Wells, Midvale Park, Tanque Verde and Vail. Towns outside the Tucson metro area include Benson to the southeast and Oracle to the north, Green Valley to the south.
The Spanish name of the city, Tucsón, is derived from the O'odham Cuk Ṣon, meaning " base of the black ", a reference to a basalt-covered hill now known as Sentinel Peak known as "A" Mountain. Tucson is sometimes referred to as "The Old Pueblo". Tucson was first visited by Paleo-Indians, known to have been in southern Arizona about 12,000 years ago. Recent archaeological excavations near the Santa Cruz River found a village site dating from 2100 BC; the floodplain of the Santa Cruz River was extensively farmed during the Early Agricultural Period, circa 1200 BC to AD 150. These people constructed irrigation canals and grew corn and other crops while gathering wild plants and hunting; the Early Ceramic period occupation of Tucson saw the first extensive use of pottery vessels for cooking and storage. The groups designated as the Hohokam lived in the area from AD 600 to 1450 and are known for their vast irrigation canal systems and their red-on-brown pottery. Jesuit missionary Eusebio Francisco Kino visited the Santa Cruz River valley in 1692, founded the Mission San Xavier del Bac in 1700 about 7 mi upstream from the site of the settlement of Tucson.
A separate Convento settlement was founded downstream along the Santa Cruz River, near the base of what is now "A" mountain. Hugo O'Conor, the founding father of the city of Tucson, Arizona authorized the construction of a military fort in that location, Presidio San Agustín del Tucsón, on August 20, 1775. During the Spanish period of the presidio, attacks such as the Second Battle of Tucson were mounted by Apaches; the town came to be called "Tucson" and became a part of the state of Sonora after Mexico gained independence from the Kingdom of Spain and its Spanish Empire in 1821. Tucson was captured by Philip St. George Cooke with the Mormon Battalion during the Mexican–American War in 1846-1848, but it soon returned to Mexican control as Cooke continued his mission westward establishing Cooke's Wagon Road to California. Tucson was not included in the Mexican Cession and Cooke's road through Tucson became one of the important routes into California during the California Gold Rush of 1849. Arizona, south of the Gila River, was obtained via treaty from Mexico in the Gadsden Purchase on June 8, 1854.
Tucson became a part of the United States of America, although the American military did not formally take over control until March 1856. In 1857, Tucson became a stage station on the San Antonio-San Diego Mail Line and in 1858 became 3rd division headquarters of the Butterfield Overland Mail until the line shut down in March 1861; the Overland Mail Corporation attempted to continue running, following the Bascom Affair, devastating Apache attacks on the stations and coaches ended operations in August 1861. From August 1861 to mid-1862, Tucson was the western capital of the Confederate Arizona Territory, the eastern capital being Mesilla. In 1862, the California Column drove the Confederate forces out of Arizona. Tucson and all of what is now Arizona were part of New Mexico Territory until 1863, when they became part of the new Arizona Territory. From 1867 to 1877, Tucson was the capital of the Arizona Territory. Tucson was incorporated in 1877. From 1877 to 1878, the area suffered a rash of stagecoach robberies.
Most notable were the two holdups committed by masked road-agent William Whitney Brazelton. Brazelton held up two stages in the summer of 1878 near Point of Mountain Station 17 mi northwest of Tucson. John Clum, of Tombstone, Arizona fame was one of the passengers. Pima County Sheriff Charles A. Shibell and his citizen posse killed Brazelton on Monday August 19, 1878, in a mesquite bosque along the Santa Cruz River 3 miles south of Tucson. Brazelton had been suspected of highway robbery in the Tucson area, the Prescott region and Silver City, New Mexico area. Brazelton's crimes prompted John J. Valentine, Sr. of Wells, Fargo & Co. to send special agent and future Pima County sheriff Bob Paul to investigate. Fort Lowell east of Tucson, was established to help protect settlers from Apache attacks. In 1882, Frank Stilwell was implicated in the murder of Morgan Earp by Cowboy Pete Spence's wife, Marietta, at the coroner's inquest on Morgan Earp's shooting; the coroner's jury concluded Spence, Frederick Bode, Florentino "Indian Charlie" Cruz were the prime suspects in the assassination of Morgan Earp.
Deputy U. S. Marshal Wyatt Earp gathered a few trusted friends and accompanied
Prescott is a city in Yavapai County, United States. According to the 2010 Census, the population of the city is 39,843; the city is the county seat of Yavapai County. In 1864 Prescott was designated as the capital of the Arizona Territory, replacing the temporary capital at Fort Whipple; the Territorial Capital was moved to Tucson in 1867. Prescott again became the Territorial Capital in 1877, until Phoenix became the capital in 1889; the towns of Prescott Valley, 7 miles east. This sometimes refers to central Yavapai County in general, which would include the towns of: Mayer, Paulden and Williamson Valley. Combined with these smaller communities the area had a population of 103,260 as of 2007. Prescott is the center of the Prescott Metropolitan Area, defined by the U. S. Census Bureau as all of Yavapai County; the Yavapai-Prescott Indian Tribe reservation is located adjacent to and within the borders of Prescott. Prescott is in the Granite Creek watershed and contains the convergence of Miller Creek and Granite Creek on its north side.
Arizona Territorial Governor John Noble Goodwin selected the original site of Prescott following his first tour of the new territory. Goodwin replaced Governor John A. Gurley, appointed by Abraham Lincoln, who died before taking office. Downtown streets in Prescott are named in honor of each of them. Goodwin selected a site 20 miles south of the temporary capital on the east side of Granite Creek near a number of mining camps; the territorial capital was moved to the new site along with Fort Whipple, with the new town named in honor of historian William H. Prescott during a public meeting on May 30, 1864. Robert W. Groom surveyed the new community, an initial auction sold 73 lots on June 4, 1864. By July 4, 1864, a total of 232 lots had been sold within the new community. Prescott was incorporated in 1881. Prescott served as capital of Arizona Territory until November 1, 1867, when the capital was moved to Tucson by act of the 4th Arizona Territorial Legislature; the capital was returned to Prescott in 1877 by the 9th Arizona Territorial Legislature.
The capital was moved to Phoenix on February 4, 1889, by the 15th Arizona Territorial Legislature. The three Arizona Territory capitals reflected the changes in political influence of different regions of the territory as they grew and developed. Prescott has a place in western folklore with the fact that Virgil Earp, Wyatt Earp's older brother, lived in Prescott in 1879 and told him of the boom town in Tombstone, Arizona, it is rumored that Doc Holliday spent some time in Prescott just before heading to Tombstone. The Sharlot Hall Museum houses much of Prescott's territorial history, the Smoki and Phippen museums maintain local collections. Whiskey Row in downtown Prescott boasts many historic buildings, including The Palace, Arizona's oldest restaurant and bar is still the oldest frontier saloon in Arizona. Many other buildings that have been converted to boutiques, art galleries and restaurants. Prescott is home to the Arizona Pioneers' Home; the Home opened during territorial days, February 1, 1911.
After several major fires in the early part of the century, downtown Prescott was rebuilt with brick. The central courthouse plaza, a lawn under huge old elm trees, is a meeting place. Cultural events and performances take place on many nights in the summer on the plaza. Barry Goldwater, the 1964 Republican nominee for president, launched his presidential campaign from the steps of Prescott's Yavapai County Courthouse. Nineteen members of the Granite Mountain Hotshots, part of the Prescott Fire Department, lost their lives Sunday, June 30, 2013, while battling the Yarnell Hill fire that had ignited two days earlier south of Prescott. Prescott is 55 mi west-northwest of the State of Arizona's geographic center. According to the United States Census Bureau, the city has a total area of 41.5 sq mi, of which 40.7 sq mi is land and 0.81 sq mi is water. Prescott is considered part of North Central Arizona, it is just south of the Granite Dells. The Granite Dells area, or called ‘The Dells’, is known for its large boulder outcroppings of granite that have eroded into a spectacular appearance of bumpy rock features.
Withi n'The Dells' are Willow Lakes, which are two small, man-made reservoirs. Here a number of hiking trails connect to the Peavine Trail; the Peavine National Recreation Trail follows. This railroad traveled from Prescott to Phoenix through the Granite Dells; the “Peavine” got its name from the winding portion of this railroad that twists and curves, resembling the vine on which peas grow. The Peavine trail connects to the Iron King Trail, the route of the old Prescott Railroad through the Granite Dells. Natural lakes include Lynx, Granite Basin and Goldwater, all surrounding different areas of this rustic community. Goldwater Lake, by Goldwater Park, is 4 miles from downtown Prescott, has 15 acres of water surface, is a popular destination for park recreation and picnic facilities. Lynx Lake is another lake close to Prescott in tall ponderosa pines, gets some 125,000 visitors every year; this 55-acre lake offers visitors recreational activities, camping, hiking, mountain biking, picnicking and a small, seasonal restaurant with a view of the lake.
There is the smallest of the natural lakes with 5 acres of surface water at Granite Basin Lake. None of these lakes permits swimming, however all are popular recrea
Terrestrial television is a type of television broadcasting in which the television signal is transmitted by radio waves from the terrestrial transmitter of a television station to a TV receiver having an antenna. The term terrestrial is more common in Europe and Latin America, while in the United States it is called broadcast or over-the-air television; the term "terrestrial" is used to distinguish this type from the newer technologies of satellite television, in which the television signal is transmitted to the receiver from an overhead satellite, cable television, in which the signal is carried to the receiver through a cable. Terrestrial television was the first technology used for television broadcasting, with the first public television broadcast from Schenectady, NY, in January, 1928; the BBC began broadcasting in 1929 and by 1930 many radio stations had a regular schedule of experimental television programmes. However, these early experimental systems had insufficient picture quality to attract the public, due to their mechanical scan technology, television did not become widespread until after World War II with the advent of electronic scan television technology.
The television broadcasting business followed the model of radio networks, with local television stations in cities and towns affiliated with television networks, either commercial or government-controlled, which provided content. Television broadcasts were in black and white until the transition to color television in the 1950s and 60s. There was no other method of television delivery until the 1950s with the beginnings of cable television and community antenna television. CATV was only a re-broadcast of over-the-air signals. With the widespread adoption of cable across the United States in the 1970s and 1980s, viewing of terrestrial television broadcasts has been in decline. A slight increase in use began after the 2009 final conversion to digital terrestrial television broadcasts, which offer HDTV image quality as an alternative to CATV for cord cutters. Following the ST61 conference, UHF frequencies were first used in the UK in 1964 with the introduction of BBC2. In UK, VHF channels were kept on the old 405-line system, while UHF was used for 625-line broadcasts.
Television broadcasting in the 405-line system continued after the introduction of four analogue programmes in the UHF bands until the last 405-line transmitters were switched off on January 6, 1985. VHF Band III was used in other countries around Europe for PAL broadcasts until planned phase out and switchover to digital television; the success of analogue terrestrial television across Europe varied from country to country. Although each country had rights to a certain number of frequencies by virtue of the ST61 plan, not all of them were brought into service. In 1941, the first NTSC standard was introduced by the National Television System Committee; this standard defined a transmission scheme for a black and white picture with 525 lines of vertical resolution at 60 fields per second. In the earl of the first tragic 1950s, this standard was superseded by a backwards-compatible standard for color television; the NTSC standard was being used in the Americas as well as Japan until the introduction of digital terrestrial television.
While Mexico have ended all its analogue television broadcasts and the US and Canada have shut down nearly all of their analogue TV stations, the NTSC standard continues to be used in the rest of Latin American countries while testing their DTT platform. In the late 1990s and early 2000s, the Advanced Television Systems Committee developed the ATSC standard for digital high definition terrestrial transmission; this standard was adopted by many American countries, including the United States, Dominican Republic, Mexico, El Salvador and Honduras. The Pan-American terrestrial television operates on analog channels 2 through 6, 7 through 13, 14 through 51. Unlike with analog transmission, ATSC channel numbers do not correspond to radio frequencies. Instead, a virtual channel is defined as part of the ATSC stream metadata so that a station can transmit on any frequency but still show the same channel number. Additionally, free-to-air television repeaters and signal boosters can be used to rebroadcast a terrestrial television signal using an otherwise unused channel to cover areas with marginal reception.
Analog television channels 2 through 6, 7 through 13, 14 through 51 are only used for LPTV translator stations in the U. S. Channels 52 through 69 are still used by some existing stations, but these channels must be vacated if telecommunications companies notify the stations to vacate that signal spectrum. By convention, broadcast television signals are transmitted with horizontal polarization. Terrestrial television broadcast in Asia started as early as 1939 in Japan through a series of experiments done by NHK Broadcasting Institute of Technology. However, these experiments were interrupted by the beginning of the World War II in the Pacific. On February 1, 1953, NHK began broadcasting. On August 28, 1953, Nippon TV, the first commercial television broadcaster in Asia was launched. Meanwhile, in the Philippines, Alto Broadcasting System, the