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Celerity 6000
Celerity (Latin ''celeritas'') may refer to: * Speed, quickness * Speed of light, ''celeritas'' * Celerity BBS, a computer bulletin board system popular in the 1990s * Celerity Computing Inc., defunct San Diego, California vendor * Celerity IT, a Virginia-based web development consulting group * The phase velocity, speed of propagation of a wave * Proper velocity, an alternative way of measuring motion in relativity * USS ''Celeritas'' (SP-665), a United States Navy patrol vessel * Mirage Celerity, an American two-seat cabin monoplane * Celerity (carriage) See also * * * Celery * Celebrity Celebrity is a condition of fame and broad public recognition of a person or group as a result of the attention given to them by mass media. An individual may attain a celebrity status from having great wealth, their participation in spor ... * Celer (other) {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Speed
In everyday use and in kinematics, the speed (commonly referred to as ''v'') of an object is the magnitude of the change of its position over time or the magnitude of the change of its position per unit of time; it is thus a scalar quantity. The average speed of an object in an interval of time is the distance travelled by the object divided by the duration of the interval; the instantaneous speed is the limit of the average speed as the duration of the time interval approaches zero. Speed is not the same as velocity. Speed has the dimensions of distance divided by time. The SI unit of speed is the metre per second (m/s), but the most common unit of speed in everyday usage is the kilometre per hour (km/h) or, in the US and the UK, miles per hour (mph). For air and marine travel, the knot is commonly used. The fastest possible speed at which energy or information can travel, according to special relativity, is the speed of light in a vacuum ''c'' = metres per second ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Speed Of Light
The speed of light in vacuum, commonly denoted , is a universal physical constant that is important in many areas of physics. The speed of light is exactly equal to ). According to the special theory of relativity, is the upper limit for the speed at which conventional matter or energy (and thus any signal carrying information) can travel through space. All forms of electromagnetic radiation, including visible light, travel at the speed of light. For many practical purposes, light and other electromagnetic waves will appear to propagate instantaneously, but for long distances and very sensitive measurements, their finite speed has noticeable effects. Starlight viewed on Earth left the stars many years ago, allowing humans to study the history of the universe by viewing distant objects. When communicating with distant space probes, it can take minutes to hours for signals to travel from Earth to the spacecraft and vice versa. In computing, the speed of light fixes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Celerity BBS
Celerity BBS was a descendant of the freely distributed source of TCS BBS 1.43, and ultimately nearly completely rewritten. Origin It originally began as a project of Brendon Woirhaye (The Byter) and David Hicks (Moebius) in 1990 to quickly modify an existing BBS package to meet a simple organizational need (separate conferences for IBM PC users and Amiga users), and to meet the needs of high speed (9600 bit/s) communication, as most BBSes of the time could not pump data to the modem quickly enough. The I/O and display subsystems were rewritten, and the BBS package got its name. Use It wasn't long before others became interested in the BBS software, and it went on to have over 500 authorized BBSes and about three times that number using it in an unauthorized manner. It was very popular in the underground pirate, hacking, and phreaking community as well as with legitimate systems, including church BBSes, non profit group BBSes, many shareware distribution systems, and a governm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Celerity Computing
Celerity Computing Inc. was a San Diego, California vendor of Unix-based "supermini" computers. Celerity Computing was founded in May 1983 by Steve Vallender, Nick Aneshansley and Andrew McCroklin. Celerity shipped its first product, the C1200 Personal Workstation in November, 1984. The C1200 was the first in a series of machines using the ACCEL RISC architecture, based on the NCR/32 32-bit processor. The C1200 offered a color monitor with up to 1280 by 1024 resolution. The C1200 was followed by the C1230 and C1260 models. The C1260 offered a dual processor option. The C1230 and C1260 were often used as multi-user systems. The C1200 series ran a version of BSD 4.2 Unix with System V Release 2 functionality merged in. Celerity attempted to make the transition to being a minisupercomputer vendor with the development of the Celerity 6000, based on the ACCEL architecture implemented in ECL based on parts from Bipolar Integrated Technology. The Celerity 6000 had a 33 MHz s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Celerity IT
Celerity IT is a Virginia based consulting firm that specializes in business and technology advisory services such as customer experience, design thinking, operational excellence, intelligent automation, business process and strategy, and a variety of Agile consulting services. Celerity was established in 2002 by Michael Berkman and Lewis Waters in McLean, Virginia. Celerity maintains offices in New York, NY; Harrisburg, PA; Pittsburgh, PA; Richmond, VA; Boston, MA; McLean, VA; Baltimore, MD; and Dallas, TX. They also offer technology services out of Clujj, Romania. Celerity launched Celerity Government Services (CGS) in 2009, which later spun off as Xcelerate Solutions. In 2013, Celerity acquired 3PC Media, a digital agency based in Pittsburgh, Pennsylvania. In 2015, Celerity was acquired by the French firm, AUSY. Awards In 2005, 2006, 2007, 2011, and 2012, Celerity was named as one of the 50 Fastest Growing Companies in the Greater Washington, D.C. Area by the ''Washington Bus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phase Velocity
The phase velocity of a wave is the rate at which the wave propagates in any medium. This is the velocity at which the phase of any one frequency component of the wave travels. For such a component, any given phase of the wave (for example, the crest) will appear to travel at the phase velocity. The phase velocity is given in terms of the wavelength (lambda) and time period as :v_\mathrm = \frac. Equivalently, in terms of the wave's angular frequency , which specifies angular change per unit of time, and wavenumber (or angular wave number) , which represent the angular change per unit of space, :v_\mathrm = \frac. To gain some basic intuition for this equation, we consider a propagating (cosine) wave . We want to see how fast a particular phase of the wave travels. For example, we can choose , the phase of the first crest. This implies , and so . Formally, we let the phase and see immediately that and . So, it immediately follows that : \frac = -\frac \frac = \frac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Proper Velocity
In relativity, proper velocity (also known as celerity) w of an object relative to an observer is the ratio between observer-measured displacement vector \textbf and proper time elapsed on the clocks of the traveling object: :\textbf = \frac It is an alternative to ordinary velocity, the distance per unit time where both distance and time are measured by the observer. The two types of velocity, ordinary and proper, are very nearly equal at low speeds. However, at high speeds proper velocity retains many of the properties that velocity loses in relativity compared with Newtonian theory. For example, proper velocity equals momentum per unit mass at any speed, and therefore has no upper limit. At high speeds, as shown in the figure at right, it is proportional to an object's energy as well. Proper velocity w can be related to the ordinary velocity v via the Lorentz factor ''γ'': :\textbf = \frac\frac=\textbf \,\gamma(v) where ''t'' is coordinate time or "map time". For unidirec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USS Celeritas (SP-665)
USS ''Celeritas'' (SP-665) was a United States Navy patrol vessel in commission from 1917 to 1919. Designed by the firm of Swasey, Raymond, & Page, ''Celeritas'' was built as a private motorboat of the same name by Robert Jacobs at City Island in the Bronx, New York, in 1916 for David Goodrich for his use in commuting. Goodrich later sold her to R. B. Myer of New York City. On 28 May 1917, the U.S. Navy purchased ''Celeritas'' from Myer for use as a section patrol boat during World War I. She was commissioned on 29 May 1917 as USS ''Celeritas'' (SP-665). Assigned to the 2nd Naval District in southern New England, ''Celeritas'' carried out patrol duties for the rest of World War I. ''Celeritas'' was stricken from the Navy Directory A Navy Directory, formerly the Navy List or Naval Register is an official list of naval officers, their ranks and seniority, the ships which they command or to which they are appointed, etc., that is published by the government or naval aut ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mirage Celerity
The Mirage Celerity is an American two-seat cabin monoplane designed by Larry Burton and with plans for home building sold by Mirage Aircraft of Tucson AZ, United States. Design and development The Celerity is a side-by-side two-seat low-wing cabin monoplane built from a mixture of composites and wood. Nominally powered by a Lycoming O-320-B1A piston engine and with a retractable conventional landing gear. Operational history In September 2014 three examples were registered in the United States with the Federal Aviation Administration The Federal Aviation Administration (FAA) is the largest transportation agency of the U.S. government and regulates all aspects of civil aviation in the country as well as over surrounding international waters. Its powers include air traffic ..., although a total of four had been registered at one time. Specifications References Notes Bibliography * External links * {{Mirage aircraft Celerity 1980s United States civil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Celerity (carriage)
Stage wagons are light horse-drawn or mule-drawn public passenger vehicles often referred to as stagecoaches. Like stagecoaches they made long scheduled trips using stage stations or posts where the horses would be replaced by fresh horses. Stage wagons were intended for use in particularly difficult conditions where standard stagecoaches would be too big and too heavy. This style of vehicle was often called a mud-coach or mud-wagon. More like wagons than coaches, the sides of the vehicle gave passengers little protection from the dirt of the road. Abbot, Downing named theirs an overland wagon. A brand-name, ''Celerity'', later became popular in place of mud (wagon).Ken Wheeling, ''They Called Them Mudders.'' The Carriage Journal, Vol 43 No 5 October 2005 Use They were employed wherever the poor state of the roads and or demand for services did not warrant the expense of a stagecoach. Most stagecoach routes in the United States' West were opened with them and often operators co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Celery
Celery (''Apium graveolens'') is a marshland plant in the family Apiaceae that has been cultivated as a vegetable since antiquity. Celery has a long fibrous stalk tapering into leaves. Depending on location and cultivar, either its stalks, leaves or hypocotyl are eaten and used in cooking. Celery seed powder is used as a spice. Description Celery leaves are pinnate to bipinnate with rhombic leaflets long and broad. The flowers are creamy-white, in diameter, and are produced in dense compound umbels. The seeds are broad ovoid to globose, long and wide. Modern cultivars have been selected for either solid petioles, leaf stalks, or a large hypocotyl. A celery stalk readily separates into "strings" which are bundles of angular collenchyma cells exterior to the vascular bundles. Wild celery, ''Apium graveolens'' var. ''graveolens'', grows to tall. Celery is a biennial plant that occurs around the globe. It produces flowers and seeds only during its second year. The first cul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Celebrity
Celebrity is a condition of fame and broad public recognition of a person or group as a result of the attention given to them by mass media. An individual may attain a celebrity status from having great wealth, their participation in sports or the entertainment industry, their position as a political figure, or even from their connection to another celebrity. 'Celebrity' usually implies a favorable public image, as opposed to the neutrals 'famous' or 'notable', or the negatives 'infamous' and 'notorious'. History In his 2020 book ''Dead Famous: an unexpected history of celebrity'', British historian Greg Jenner uses the definition: Although his book is subtitled "from Bronze Age to Silver Screen", and despite the fact that "Until very recently, sociologists argued that ''celebrity'' was invented just over 100 years ago, in the flickering glimmer of early Hollywood" and the suggestion that some medieval saints might qualify, Jenner asserts that the earliest celebrities live ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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