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52 (number)
52 (fifty-two) is the natural number following 51 and preceding 53. In mathematics Fifty-two is * the 5th Bell number, the number of ways to partition a set of 5 objects. * a decagonal number. * an untouchable number, since it is never the sum of proper divisors of any number, and it is a noncototient since it is not equal to ''x'' − φ(''x'') for any ''x''. * a vertically symmetrical number. In science *The atomic number of tellurium Astronomy *Messier object M52, a magnitude 8.0 open cluster in the constellation Cassiopeia, also known as NGC 7654. *The New General Cataloguebr>objectNGC 52, a spiral galaxy in the constellation Pegasus. In other fields Fifty-two is: *The approximate number of weeks in a year. 52 weeks is 364 days, while the tropical year is 365.24 days long. According to ISO 8601, most years have 52 weeks while some have 53. *A significant number in the Maya calendar *On the modern piano, the number of white keys (notes in the C major scale) *The number ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Natural Number
In mathematics, the natural numbers are those numbers used for counting (as in "there are ''six'' coins on the table") and ordering (as in "this is the ''third'' largest city in the country"). Numbers used for counting are called ''Cardinal number, cardinal numbers'', and numbers used for ordering are called ''Ordinal number, ordinal numbers''. Natural numbers are sometimes used as labels, known as ''nominal numbers'', having none of the properties of numbers in a mathematical sense (e.g. sports Number (sports), jersey numbers). Some definitions, including the standard ISO/IEC 80000, ISO 80000-2, begin the natural numbers with , corresponding to the non-negative integers , whereas others start with , corresponding to the positive integers Texts that exclude zero from the natural numbers sometimes refer to the natural numbers together with zero as the whole numbers, while in other writings, that term is used instead for the integers (including negative integers). The natural ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NGC 52
NGC 52 (PGC 978) is an edge-on spiral galaxy in the constellation Pegasus. It was discovered on September 18, 1784 by William Herschel. He described it as "very faint, small, extended." Physical Characteristics The galaxy is approximately 150,000 light years across. This makes it, in comparison, about 1.5 times as large as the Milky Way. The galaxy also has a satellite elliptical galaxy called PGC (Principal Galaxies Catalogue) 1563523. See also * Spiral galaxy * List of NGC objects (1–1000) * Pegasus (constellation) Pegasus is a constellation in the northern sky, named after the winged horse Pegasus in Greek mythology. It was one of the 48 constellations listed by the 2nd-century astronomer Ptolemy, and is one of the 88 constellations recognised today. Wit ... References External links * * SEDS {{DEFAULTSORT:NGC 0052 0052 00978 Unbarred spiral galaxies IRAS catalogue objects 17840918 00140 Discoveries by William Herschel Pegasus (constellation)< ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Comic
a Media (communication), medium used to express ideas with images, often combined with text or other visual information. It typically the form of a sequence of Panel (comics), panels of images. Textual devices such as speech balloons, Glossary of comics terminology#Caption, captions, and onomatopoeia can indicate dialogue, narration, sound effects, or other information. There is no consensus amongst theorists and historians on a definition of comics; some emphasize the combination of images and text, some sequentiality or other image relations, and others historical aspects such as mass reproduction or the use of recurring characters. Cartoonist, Cartooning and other forms of illustration are the most common image-making means in comics; ''Photo comics, fumetti'' is a form that uses photographic images. Common forms include comic strips, Political cartoon, editorial and gag cartoons, and comic books. Since the late 20th century, bound volumes such as graphic novels, Bande d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Code For International Direct Dial
Country calling codes or country dial-in codes are telephone number prefixes for reaching telephone subscribers in the networks of the member countries or regions of the International Telecommunication Union (ITU). The codes are defined by the ITU-T in standards E.123 and E.164. The prefixes enable international direct dialing (IDD) and are also referred to as ''international subscriber dialing'' (ISD) codes. Country codes are a component of the international telephone numbering plan and are necessary only when dialing a telephone number to establish a call to another country. Country codes are dialed before the national telephone number. By convention, international telephone numbers are represented by prefixing the country code with a plus sign (+), which also indicates to the subscriber that the local international call prefix must first be dialed. For example, the international call prefix in all countries of the North American Numbering Plan is 011, while it is 00 in most ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
52 Pick-Up
''52 Pick-Up'' is a 1986 American neo-noir crime film directed by John Frankenheimer and starring Roy Scheider, Ann-Margret, and Vanity. It is based on Elmore Leonard's 1974 novel of the same name, and is the second adaptation of it after '' The Ambassador'' (1984). Plot Harry Mitchell is a successful construction magnate living in the suburbs of Los Angeles, whose wife Barbara is running for city council. One day, Harry is confronted by three hooded blackmailers who demand $105,000 per year for a videotape of him and his mistress, a young stripper named Cini. Because of his wife's political aspirations he cannot go to the police; however, guilt eventually drives him to confess, and she kicks him out of their bedroom. Harry's stubborn inclination is to not surrender to the threats, and when his lawyer advises him that the blackmailers will never leave him alone, he refuses to pay. The trio kidnap Harry and force him to watch a video of Cini being murdered with a gun stolen from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Playing Cards
A playing card is a piece of specially prepared card stock, heavy paper, thin cardboard, plastic-coated paper, cotton-paper blend, or thin plastic that is marked with distinguishing motifs. Often the front (face) and back of each card has a finish to make handling easier. They are most commonly used for playing card games, and are also used in magic tricks, cardistry, card throwing, and card houses; cards may also be collected. Some patterns of Tarot playing card are also used for divination, although bespoke cards for this use are more common. Playing cards are typically palm-sized for convenient handling, and usually are sold together in a set as a deck of cards or pack of cards. The most common type of playing card in the West is the French-suited, standard 52-card pack, of which the most widespread design is the English pattern, followed by the Belgian-Genoese pattern. However, many countries use other, traditional types of playing card, including those that are German ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
C Major
C major (or the key of C) is a major scale based on C, consisting of the pitches C, D, E, F, G, A, and B. C major is one of the most common keys used in music. Its key signature has no flats or sharps. Its relative minor is A minor and its parallel minor is C minor. The C major scale is: : On the piano, the C major scale can be played by playing only the white keys starting on C. Compositions Twenty of Joseph Haydn's 106 symphonies are in C major, making it his second most-used key, second to D major. Of the 134 symphonies mistakenly attributed to Haydn that H. C. Robbins Landon lists in his catalog, 33 are in C major, more than any other key. Before the invention of the valves, Haydn did not write trumpet and timpani parts in his symphonies, except those in C major. Landon writes that it wasn't "until 1774 that Haydn uses trumpets and timpani in a key other than C major... and then only sparingly." Most of Haydn's symphonies in C major are labelled "festive" an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Piano
The piano is a stringed keyboard instrument in which the strings are struck by wooden hammers that are coated with a softer material (modern hammers are covered with dense wool felt; some early pianos used leather). It is played using a keyboard, which is a row of keys (small levers) that the performer presses down or strikes with the fingers and thumbs of both hands to cause the hammers to strike the strings. It was invented in Italy by Bartolomeo Cristofori around the year 1700. Description The word "piano" is a shortened form of ''pianoforte'', the Italian term for the early 1700s versions of the instrument, which in turn derives from ''clavicembalo col piano e forte'' (key cimbalom with quiet and loud)Pollens (1995, 238) and ''fortepiano''. The Italian musical terms ''piano'' and ''forte'' indicate "soft" and "loud" respectively, in this context referring to the variations in volume (i.e., loudness) produced in response to a pianist's touch or pressure on the keys: the grea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maya Calendar
The Maya calendar is a system of calendars used in pre-Columbian Mesoamerica and in many modern communities in the Guatemalan highlands, Veracruz, Oaxaca and Chiapas, Mexico. The essentials of the Maya calendar are based upon a system which had been in common use throughout the region, dating back to at least the 5th century BC. It shares many aspects with calendars employed by other earlier Mesoamerican civilizations, such as the Zapotec and Olmec and contemporary or later ones such as the Mixtec and Aztec calendars. By the Maya mythological tradition, as documented in Colonial Yucatec accounts and reconstructed from Late Classic and Postclassic inscriptions, the deity Itzamna is frequently credited with bringing the knowledge of the calendrical system to the ancestral Maya, along with writing in general and other foundational aspects of Mayan culture. Overview The Maya calendar consists of several cycles or ''counts'' of different lengths. The 260-day count is known to s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ISO 8601
ISO 8601 is an international standard covering the worldwide exchange and communication of date and time-related data. It is maintained by the Geneva-based International Organization for Standardization (ISO) and was first published in 1988, with updates in 1991, 2000, 2004, and 2019, and an amendment in 2022. The standard provides a well-defined, unambiguous method of representing calendar dates and times in worldwide communications, especially to avoid misinterpreting numeric dates and times when such data is transferred between countries with different conventions for writing numeric dates and times. ISO 8601 applies to these representations and formats: ''dates,'' in the Gregorian calendar (including the proleptic Gregorian calendar); ''times,'' based on the 24-hour timekeeping system, with optional UTC offset; ''time intervals''; and combinations thereof.ISO 8601:2004 section 1 Scope The standard does not assign specific meaning to any element of the dates/times r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tropical Year
A tropical year or solar year (or tropical period) is the time that the Sun takes to return to the same position in the sky of a celestial body of the Solar System such as the Earth, completing a full cycle of seasons; for example, the time from vernal equinox to vernal equinox, or from summer solstice to summer solstice. It is the type of year used by tropical solar calendars. The solar year is one type of astronomical year and particular orbital period. Another type is the sidereal year (or sidereal orbital period), which is the time it takes Earth to complete one full orbit around the Sun as measured with respect to the fixed stars, resulting in a duration of 20 minutes longer than the tropical year, because of the precession of the equinoxes. Since antiquity, astronomers have progressively refined the definition of the tropical year. The entry for "year, tropical" in the '' Astronomical Almanac Online Glossary'' states: An equivalent, more descriptive, definition is "The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
