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Salaam TV
Salaam TV is an independent satellite television channel committed to providing Shia Islamic programming. Salaam TV was established in early 2005 by Hajj Sheikh Mohammad Hedayati. The channel's launch date intentionally coincided with the Eid of Ghadeer. Salaam TV's producers assert that the channel is not affiliated with any political groups or external organizations, as it aims to provide apolitical Islamic programming. Availability Salaam TV was originally available through satellite television throughout most of North America (specifically, the United States and Canada). Since its founding, Salaam TV has always been available internationally, as it is viewable free of charge through the official Salaam TV website. On May 22, 2006, Salaam TV became available via satellite programing in Europe and Iran through Hot Bird. Language Throughout the first year of Salaam TV's programming, most of the channel's programs were in English and Persian (aside from the Qur'anic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territories, nine Minor Outlying Islands, and 326 Indian reservations. The United States is also in free association with three Pacific Island sovereign states: the Federated States of Micronesia, the Marshall Islands, and the Republic of Palau. It is the world's third-largest country by both land and total area. It shares land borders with Canada to its north and with Mexico to its south and has maritime borders with the Bahamas, Cuba, Russia, and other nations. With a population of over 333 million, it is the most populous country in the Americas and the third most populous in the world. The national capital of the United States is Washington, D.C. and its most populous city and principal financial center is New York City. Paleo-Americ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Symbol Rate
In a digitally modulated signal or a line code, symbol rate, modulation rate or baud rate is the number of symbol changes, waveform changes, or signaling events across the transmission medium per unit of time. The symbol rate is measured in ''baud'' (Bd) or ''symbols per second''. In the case of a line code, the symbol rate is the pulse rate in pulses per second. Each symbol can represent or convey one or several bits of data. The symbol rate is related to the ''gross bit rate'', expressed in ''bits per second''. Symbols A symbol may be described as either a pulse in digital baseband transmission or a tone in passband transmission using modems. A symbol is a waveform, a state or a significant condition of the communication channel that ''persists'', for a fixed period of time. A sending device places symbols on the channel at a fixed and known symbol rate, and the receiving device has the job of detecting the sequence of symbols in order to reconstruct the transmitted data. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vertical Direction
In astronomy, geography, and related sciences and contexts, a '' direction'' or ''plane'' passing by a given point is said to be vertical if it contains the local gravity direction at that point. Conversely, a direction or plane is said to be horizontal if it is perpendicular to the vertical direction. In general, something that is vertical can be drawn from up to down (or down to up), such as the y-axis in the Cartesian coordinate system. Historical definition The word ''horizontal'' is derived from the Latin , which derives from the Greek , meaning 'separating' or 'marking a boundary'. The word ''vertical'' is derived from the late Latin ', which is from the same root as ''vertex'', meaning 'highest point' or more literally the 'turning point' such as in a whirlpool. Girard Desargues defined the vertical to be perpendicular to the horizon in his 1636 book ''Perspective''. Geophysical definition The plumb line and spirit level In physics, engineering and construction, the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polarization (waves)
Polarization (also polarisation) is a property applying to transverse waves that specifies the geometrical orientation of the oscillations. In a transverse wave, the direction of the oscillation is perpendicular to the direction of motion of the wave. A simple example of a polarized transverse wave is vibrations traveling along a taut string ''(see image)''; for example, in a musical instrument like a guitar string. Depending on how the string is plucked, the vibrations can be in a vertical direction, horizontal direction, or at any angle perpendicular to the string. In contrast, in longitudinal waves, such as sound waves in a liquid or gas, the displacement of the particles in the oscillation is always in the direction of propagation, so these waves do not exhibit polarization. Transverse waves that exhibit polarization include electromagnetic waves such as light and radio waves, gravitational waves, and transverse sound waves (shear waves) in solids. An electromagnetic wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frequency
Frequency is the number of occurrences of a repeating event per unit of time. It is also occasionally referred to as ''temporal frequency'' for clarity, and is distinct from ''angular frequency''. Frequency is measured in hertz (Hz) which is equal to one event per second. The period is the interval of time between events, so the period is the reciprocal of the frequency. For example, if a heart beats at a frequency of 120 times a minute (2 hertz), the period, —the interval at which the beats repeat—is half a second (60 seconds divided by 120 beats). Frequency is an important parameter used in science and engineering to specify the rate of oscillatory and vibratory phenomena, such as mechanical vibrations, audio signals (sound), radio waves, and light. Definitions and units For cyclical phenomena such as oscillations, waves, or for examples of simple harmonic motion, the term ''frequency'' is defined as the number of cycles or vibrations per unit of time. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Name
A name is a term used for identification by an external observer. They can identify a class or category of things, or a single thing, either uniquely, or within a given context. The entity identified by a name is called its referent. A personal name identifies, not necessarily uniquely, a ''specific'' individual human. The name of a specific entity is sometimes called a proper name (although that term has a philosophical meaning as well) and is, when consisting of only one word, a proper noun. Other nouns are sometimes called "common names" or (obsolete) "general names". A name can be given to a person, place, or thing; for example, parents can give their child a name or a scientist can give an element a name. Etymology The word ''name'' comes from Old English ''nama''; cognate with Old High German (OHG) ''namo'', Sanskrit (''nāman''), Latin ''Roman naming conventions, nomen'', Greek language, Greek (''onoma''), and Persian language, Persian (''nâm''), from the Proto-Indo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Satellite
A satellite or artificial satellite is an object intentionally placed into orbit in outer space. Except for passive satellites, most satellites have an electricity generation system for equipment on board, such as solar panels or radioisotope thermoelectric generators (RTGs). Most satellites also have a method of communication to ground stations, called Transponder (satellite communications), transponders. Many satellites use a Satellite bus, standardized bus to save cost and work, the most popular of which is small CubeSats. Similar satellites can work together as a group, forming Satellite constellation, constellations. Because of the high launch cost to space, satellites are designed to be as lightweight and robust as possible. Most communication satellites are radio Broadcast relay station, relay stations in orbit and carry dozens of transponders, each with a bandwidth of tens of megahertz. Satellites are placed from the surface to orbit by launch vehicles, high enough to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bird Songs
Bird vocalization includes both bird calls and bird songs. In non-technical use, bird songs are the bird sounds that are melodious to the human ear. In ornithology and birding, songs (relatively complex vocalizations) are distinguished by function from calls (relatively simple vocalizations). Definition The distinction between songs and calls is based upon complexity, length, and context. Songs are longer and more complex and are associated with Territory (animal), territory and Bird#Breeding, courtship and mating, while calls tend to serve such functions as Alarm signal, alarms or keeping members of a herd, flock in contact. Other authorities such as Howell and Webb (1995) make the distinction based on function, so that short vocalizations, such as those of pigeons, and even non-vocal sounds, such as the drumming of woodpeckers and the "Drumming (snipe), winnowing" of snipes' wings in display flight, are considered songs. Still others require song to have syllabic diversity ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Muslims
Muslims ( ar, المسلمون, , ) are people who adhere to Islam, a monotheistic religion belonging to the Abrahamic tradition. They consider the Quran, the foundational religious text of Islam, to be the verbatim word of the God of Abraham (or '' Allah'') as it was revealed to Muhammad, the main Islamic prophet. The majority of Muslims also follow the teachings and practices of Muhammad ('' sunnah'') as recorded in traditional accounts (''hadith''). With an estimated population of almost 1.9 billion followers as of 2020 year estimation, Muslims comprise more than 24.9% of the world's total population. In descending order, the percentage of people who identify as Muslims on each continental landmass stands at: 45% of Africa, 25% of Asia and Oceania (collectively), 6% of Europe, and 1% of the Americas. Additionally, in subdivided geographical regions, the figure stands at: 91% of the Middle East–North Africa, 90% of Central Asia, 65% of the Caucasus, 42% of Southeast Asi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Telethon
A telethon (a portmanteau of "television" and "marathon") is a televised fundraising event that lasts many hours or even days, the purpose of which is to raise money for a charitable, political or other purportedly worthy cause. Most telethons feature heavy solicitations for pledges (promises to donate funds at a later time) by masters of ceremonies or hosts, who are often local celebrities or media personalities combined with variety show style entertainment such as singers, bands and instrumentalists. In some cases, telethons feature content related to the cause being supported, such as interviews with charitable beneficiaries, tours of charity-supported projects, or pre-taped sequences. The equivalent term for a radio broadcast is a radiothon; most radiothons do not include live entertainment. In the United States, the first telethon used for political outreach occurred in 1960. History United States In 1949, Milton Berle hosted the first-ever telethon, raising $1,100,000 f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Philanthropists
Philanthropy is a form of altruism that consists of "private initiatives, for the Public good (economics), public good, focusing on quality of life". Philanthropy contrasts with business initiatives, which are private initiatives for private good, focusing on material gain; and with government endeavors, which are public initiatives for public good, notably focusing on provision of public services. A person who practices philanthropy is a List of philanthropists, philanthropist. Etymology The word ''philanthropy'' comes , from ''phil''- "love, fond of" and ''anthrōpos'' "humankind, mankind". In the second century AD, Plutarch used the Greek concept of ''philanthrôpía'' to describe superior human beings. During the Middle Ages, ''philanthrôpía'' was superseded in Europe by the Christian theology, Christian cardinal virtue, virtue of ''charity'' (Latin: ''caritas''); selfless love, valued for salvation and escape from purgatory. Thomas Aquinas held that "the habit of charity ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
