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Boeing 737
The Boeing 737 is a narrow-body aircraft produced by Boeing at its Renton Factory in Washington. Developed to supplement the Boeing 727 on short and thin routes, the twinjet retains the 707 fuselage width and six abreast seating with two underwing turbofans. Envisioned in 1964, the initial 737-100 made its first flight in April 1967 and entered service in February 1968 with Lufthansa. The lengthened 737-200 entered service in April 1968, and evolved through four generations, offering several variants for 85 to 215 passengers. The 737-100/200 original variants were powered by Pratt & Whitney JT8D low-bypass engines and offered seating for 85 to 130 passengers. Launched in 1980 and introduced in 1984, the 737 Classic -300/400/500 variants were upgraded with CFM56-3 turbofans and offered 110 to 168 seats. Introduced in 1997, the 737 Next Generation (NG) -600/700/800/900 variants have updated CFM56-7s, a larger wing and an upgraded glass cockpit, and seat 108 to 215 passe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
73 (number)
73 (seventy-three) is the natural number following 72 and preceding 74. In English, it is the smallest natural number with twelve letters in its spelled out name. In mathematics 73 is the 21st prime number, and emirp with 37, the 12th prime number. It is also the eighth twin prime, with 71. It is the largest minimal primitive root in the first primes; in other words, if ''p'' is one of the first one hundred thousand primes, then at least one of the numbers is a primitive root modulo ''p''. 73 is also the smallest factor of the first composite generalized Fermat number in decimal: , and the smallest prime congruent to 1 modulo 24, as well as the only prime repunit in base 8 (1118). It is the fourth star number. Notably, 73 is the sole Sheldon prime to contain both ''mirror'' and ''product'' properties: *73, as an emirp, has 37 as its dual permutable prime, a mirroring of its base ten digits, 7 and 3. 73 is the 21st prime number, while 37 is the 12th, which is a se ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1973
Events January * January 1 - The United Kingdom, the Republic of Ireland and Denmark enter the European Economic Community, which later becomes the European Union. * January 15 – Vietnam War: Citing progress in peace negotiations, U.S. President Richard Nixon announces the suspension of offensive action in North Vietnam. * January 17 – Ferdinand Marcos becomes President for Life of the Philippines. * January 20 – Richard Nixon is sworn in for a second term as President of the United States. Nixon is the only person to have been sworn in twice as President ( 1969, 1973) and Vice President of the United States (1953, 1957). * January 22 ** George Foreman defeats Joe Frazier to win the heavyweight world boxing championship. ** A Royal Jordanian Boeing 707 flight from Jeddah crashes in Kano, Nigeria; 176 people are killed. * January 27 – U.S. involvement in the Vietnam War ends with the signing of the Paris Peace Accords. February * February 8 – A military insurr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
73 Bristol–Cribbs Causeway
The 73 is a bus route that operates between Bristol Temple Meads railway station and Cribbs Causeway. History The former 74 bus route was merged with the 73 from 1 September 2013. The frequency of the combined route was a bus every 10 minutes during weekdays, every 15 minutes on Saturdays, and every 30 minutes on evenings and Sundays. From 31 August 2014, the service frequency was reduced from 10 minutes to 12 minutes. From 4 September 2016, the peak service frequency was reduced from 12 minutes to 15 minutes and the route was extended to Temple Meads railway station. In anticipation of a predicted drop in passenger numbers due to the introduction of MetroBus route M1 in January 2019, the route saw its frequency reduced to every 20 minutes. In July 2020, three biomethane buses were introduced on the route. In January 2021, Monday-Friday services between Bristol Temple Meads and Bristol Parkway railway station were withdrawn, resulting in a reduced frequency of 30 minutes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
73 (magazine)
''73 Magazine'' (also known as ''73 Amateur Radio Today'') () was a United States-based amateur radio magazine that was published from 1960 to 2003. It was known for its strong emphasis on technical articles and for the lengthy editorials in each issue by its founder and publisher, Wayne Green. The magazine title, ''73'', (Morse: −−••• •••−− ) means "best regards" in amateur radio lingo. History The first issue of ''73'' was published in October 1960 from Green's business offices in Brooklyn, New York. A major contributing editor was Ken Sessions, K6MVH, who wrote a column called "The Chronicles of 76", a reference to the FM transmitting frequency of 146.76 megahertz. Sessions also authored many books on the subject of amateur radio, and designed many of the how-to projects included in the magazine. Another contributing editor was Jean Shepherd, K2ORS. According to the ARRL Letter, "''73'' was a pioneer promoter of SSB, FM, solid-state, easy constructio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
73 BC
__NOTOC__ Year 73 BC was a year of the pre-Julian Roman calendar. At the time it was known as the Year of the Consulship of Lucullus and Longinus (or, less frequently, year 681 ''Ab urbe condita''). The denomination 73 BC for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years. Events By place Roman Republic * Third Servile War: Spartacus, a Thracian gladiator, escapes with around 70 slave-gladiators from a gladiator school at Capua. They defeat a small Roman force and equip themselves with captured military equipment as well with gladiatorial weapons. Spartacus and his band of gladiators plunder the region surrounding Capua and retire to a defensible position on Mount Vesuvius. * Battle of Mount Vesuvius: Spartacus defeats a Roman militia force (3,000 men) under Gaius Claudius Glaber. The rebel slaves spend the winter of 73–72 BC training, arming and equipping their new rec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AD 73
__NOTOC__ AD 73 ( LXXIII) was a common year starting on Friday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Domitian and Messalinus (or, less frequently, year 826 ''Ab urbe condita''). The denomination AD 73 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years. Events By place Roman Empire * Spring – The Roman governor Lucius Flavius Silva lays siege to Masada, the last outpost of the Jewish rebels following the end, in AD 70, of the First Jewish-Roman War (Jewish Revolt). The Roman army (''Legio X Fretensis)'' surrounds the mountain fortress with a 7-mile long siege wall (circumvallation) and builds a rampart of stones and beaten earth against the western approach. After the citadel is conquered, 960 Zealots under the leadership of Eleazar ben Ya'ir commit mass suicide when defeat becomes immi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2073
In contemporary history, the third millennium of the anno Domini or Common Era in the Gregorian calendar is the current millennium spanning the years 2001 to 3000 ( 21st to 30th centuries). Ongoing futures studies seek to understand what is likely to continue and what could plausibly change in the course of this period and beyond. Predictions and forecasts not included on this timeline * List of future astronomical events ** List of lunar eclipses in the 21st century ** List of solar eclipses in the 21st century * Projections of population growth * Climate change ** Representative Concentration Pathway ** Shared Socioeconomic Pathways * Extinction * List of dates predicted for apocalyptic events * Predictions and claims for the Second Coming * Near future in fiction * Works falling into the public domain in the United States 21st century 2000s * See: 2001 * 2002 * 2003 * 2004 * 2005 * 2006 * 2007 * 2008 * 2009 2010s * See: 2010 * 2011 * 2012 * 2013 * 2014 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Morse Code Abbreviations
Morse code abbreviations are used to speed up Morse communications by foreshortening textual words and phrases. Morse abbreviations are short forms, representing normal textual words and phrases formed from some (fewer) characters taken from the word or phrase being abbreviated. Many are typical English abbreviations, or short acronyms for often-used phrases. Distinct from prosigns and commercial codes Morse code abbreviations are not the same as prosigns. Morse abbreviations are composed of (normal) textual alpha-numeric character symbols with normal Morse code inter-character spacing; the character symbols in abbreviations, unlike the delineated character groups representing Morse code prosigns, are not "run together" or concatenated in the way most prosigns are formed. Although a few abbreviations (such as for "dollar") are carried over from former commercial telegraph codes, almost all Morse abbreviations are ''not'' commercial codes. From 1845 until well into the second h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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