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An encyclopedia (
American English American English, sometimes called United States English or U.S. English, is the set of variety (linguistics), varieties of the English language native to the United States. English is the Languages of the United States, most widely spoken lan ...
) or encyclopædia ( British English) is a reference work or compendium providing summaries of knowledge either general or special to a particular field or discipline. Encyclopedias are divided into
articles Article often refers to: * Article (grammar), a grammatical element used to indicate definiteness or indefiniteness * Article (publishing), a piece of nonfictional prose that is an independent part of a publication Article may also refer to: G ...
or entries that are arranged alphabetically by article name or by thematic categories, or else are
hyperlinked ''Hyperlinked'' is an American semi-autobiography streaming television series produced exclusively for YouTube Premium, featuring the now-disbanded music group L2M. The series was created by Juliette Brindak Blake, Hermine Brindak and Larry Re ...
and searchable. Encyclopedia entries are longer and more detailed than those in most
dictionaries A dictionary is a listing of lexemes from the lexicon of one or more specific languages, often arranged alphabetically (or by radical and stroke for ideographic languages), which may include information on definitions, usage, etymologies, p ...
. Generally speaking, encyclopedia articles focus on ''
fact A fact is a datum about one or more aspects of a circumstance, which, if accepted as true and proven true, allows a logical conclusion to be reached on a true–false evaluation. Standard reference works are often used to check facts. Scient ...
ual information'' concerning the subject named in the article's title; this is unlike dictionary entries, which focus on linguistic information about words, such as their etymology, meaning, pronunciation, use, and
grammatical In linguistics, grammaticality is determined by the conformity to language usage as derived by the grammar of a particular variety (linguistics), speech variety. The notion of grammaticality rose alongside the theory of generative grammar, the go ...
forms.Béjoint, Henri (2000)
''Modern Lexicography''
, pp. 30–31. Oxford University Press.
Encyclopedias have existed for around 2,000 years and have evolved considerably during that time as regards language (written in a major international or a vernacular language), size (few or many volumes), intent (presentation of a global or a limited range of knowledge), cultural perspective (authoritative, ideological, didactic, utilitarian), authorship (qualifications, style), readership (education level, background, interests, capabilities), and the technologies available for their production and distribution (hand-written manuscripts, small or large print runs, Internet). As a valued source of reliable information compiled by experts, printed versions found a prominent place in libraries, schools and other educational institutions. The appearance of digital and open-source versions in the 21st century, such as Wikipedia, has vastly expanded the accessibility, authorship, readership, and variety of encyclopedia entries.


Etymology

The word ''
encyclopedia An encyclopedia (American English) or encyclopædia (British English) is a reference work or compendium providing summaries of knowledge either general or special to a particular field or discipline. Encyclopedias are divided into articles ...
'' (''encyclo'', ''pedia'') comes from the Koine Greek , transliterated , meaning 'general education' from (), meaning 'circular, recurrent, required regularly, general' and (), meaning 'education, rearing of a child'; together, the phrase literally translates as 'complete instruction' or 'complete knowledge'. However, the two separate words were reduced to a single word due to a scribal error by copyists of a Latin manuscript edition of Quintillian in 1470. The copyists took this phrase to be a single Greek word, ''enkyklopaedia'', with the same meaning, and this spurious Greek word became the New Latin word ''encyclopaedia'', which in turn came into English. Because of this compounded word, fifteenth-century readers and since have often, and incorrectly, thought that the Roman authors Quintillian and Pliny described an ancient genre.


Characteristics

The modern encyclopedia was developed from the
dictionary A dictionary is a listing of lexemes from the lexicon of one or more specific languages, often arranged alphabetically (or by radical and stroke for ideographic languages), which may include information on definitions, usage, etymologies ...
in the 18th century. Historically, both encyclopedias and dictionaries have been researched and written by well-educated, well-informed content
expert An expert is somebody who has a broad and deep understanding and competence in terms of knowledge, skill and experience through practice and education in a particular field. Informally, an expert is someone widely recognized as a reliable s ...
s, but they are significantly different in structure. A dictionary is a linguistic work which primarily focuses on alphabetical listing of words and their definitions.
Synonym A synonym is a word, morpheme, or phrase that means exactly or nearly the same as another word, morpheme, or phrase in a given language. For example, in the English language, the words ''begin'', ''start'', ''commence'', and ''initiate'' are all ...
ous words and those related by the subject matter are to be found scattered around the dictionary, giving no obvious place for in-depth treatment. Thus, a dictionary typically provides limited information, analysis or background for the word defined. While it may offer a definition, it may leave the reader lacking in understanding the meaning, significance or limitations of a term, and how the term relates to a broader field of knowledge. To address those needs, an encyclopedia article is typically not limited to simple definitions, and is not limited to defining an individual word, but provides a more extensive meaning for a ''subject or
discipline Discipline refers to rule following behavior, to regulate, order, control and authority. It may also refer to punishment. Discipline is used to create habits, routines, and automatic mechanisms such as blind obedience. It may be inflicted on ot ...
''. In addition to defining and listing synonymous terms for the topic, the article is able to treat the topic's more extensive meaning in more depth and convey the most relevant accumulated knowledge on that subject. An encyclopedia article also often includes many maps and
illustration An illustration is a decoration, interpretation or visual explanation of a text, concept or process, designed for integration in print and digital published media, such as posters, flyers, magazines, books, teaching materials, animations, vid ...
s, as well as
bibliography Bibliography (from and ), as a discipline, is traditionally the academic study of books as physical, cultural objects; in this sense, it is also known as bibliology (from ). English author and bibliographer John Carter describes ''bibliography ...
and
statistics Statistics (from German language, German: ''wikt:Statistik#German, Statistik'', "description of a State (polity), state, a country") is the discipline that concerns the collection, organization, analysis, interpretation, and presentation of ...
. An encyclopedia is, theoretically, not written in order to convince, although one of its goals is indeed to convince its reader of its own veracity.


Four major elements

There are four major elements that define an encyclopedia: its subject matter, its scope, its method of organization, and its method of production: # Encyclopedias can be general, containing articles on topics in every field (the English-language '' Encyclopædia Britannica'' and German '' Brockhaus'' are well-known examples). General encyclopedias may contain guides on how to do a variety of things, as well as embedded dictionaries and gazetteers. There are also encyclopedias that cover a wide variety of topics from a particular cultural, ethnic, or national perspective, such as the '' Great Soviet Encyclopedia'' or '' Encyclopaedia Judaica''. # Works of encyclopedic scope aim to convey the important accumulated knowledge for their subject domain, such as an encyclopedia of medicine,
philosophy Philosophy (from , ) is the systematized study of general and fundamental questions, such as those about existence, reason, knowledge, values, mind, and language. Such questions are often posed as problems to be studied or resolved. Some ...
or law. Works vary in the breadth of material and the depth of discussion, depending on the target audience. # Some systematic method of organization is essential to making an encyclopedia usable for reference. There have historically been two main methods of organizing printed encyclopedias: the alphabetical method (consisting of a number of separate articles, organized in alphabetical order) and organization by
hierarchical A hierarchy (from Greek: , from , 'president of sacred rites') is an arrangement of items (objects, names, values, categories, etc.) that are represented as being "above", "below", or "at the same level as" one another. Hierarchy is an important ...
categories. The former method is today the more common, especially for general works. The fluidity of electronic media, however, allows new possibilities for multiple methods of organization of the same content. Further, electronic media offer new capabilities for search, indexing and cross reference. The epigraph from
Horace Quintus Horatius Flaccus (; 8 December 65 – 27 November 8 BC), known in the English-speaking world as Horace (), was the leading Roman lyric poet during the time of Augustus (also known as Octavian). The rhetorician Quintilian regarded his ' ...
on the title page of the 18th century ''Encyclopédie'' suggests the importance of the structure of an encyclopedia: "What grace may be added to commonplace matters by the power of order and connection." # As modern multimedia and the information age have evolved, new methods have emerged for the collection, verification, summation, and presentation of information of all kinds. Projects such as Everything2, Encarta, h2g2, and Wikipedia are examples of new forms of the encyclopedia as
information retrieval Information retrieval (IR) in computing and information science is the process of obtaining information system resources that are relevant to an information need from a collection of those resources. Searches can be based on full-text or other co ...
becomes simpler. The method of production for an encyclopedia historically has been supported in both for-profit and non-profit contexts. The '' Great Soviet Encyclopedia'' mentioned above was entirely state sponsored, while the ''Britannica'' was supported as a for-profit institution. By comparison, Wikipedia is supported by volunteers contributing in a non-profit environment under the organization of the Wikimedia Foundation.


Encyclopedic dictionaries

Some works entitled "dictionaries" are actually similar to encyclopedias, especially those concerned with a particular field (such as the '' Dictionary of the Middle Ages'', the '' Dictionary of American Naval Fighting Ships'', and ''
Black's Law Dictionary ''Black's Law Dictionary'' is the most frequently used legal dictionary in the United States. Henry Campbell Black (1860–1927) was the author of the first two editions of the dictionary. History The first edition was published in 1891 by West P ...
''). The '' Macquarie Dictionary,'' Australia's national dictionary, became an
encyclopedic dictionary An encyclopedic dictionary typically includes many short listings, arranged alphabetically, and discussing a wide range of topics. Encyclopedic dictionaries can be general, containing articles on topics in many different fields; or they can sp ...
after its first edition in recognition of the use of proper nouns in common communication, and the words derived from such proper nouns.


Differences between encyclopedias and dictionaries

There are some broad differences between encyclopedias and dictionaries. Most noticeably, encyclopedia articles are longer, fuller and more thorough than entries in most general-purpose dictionaries. There are differences in content as well. Generally speaking, dictionaries provide linguistic information about words themselves, while encyclopedias focus more on the thing for which those words stand. Thus, while dictionary entries are inextricably fixed to the word described, encyclopedia articles can be given a different entry name. As such, dictionary entries are not fully translatable into other languages, but encyclopedia articles can be. In practice, however, the distinction is not concrete, as there is no clear-cut difference between factual, "encyclopedic" information and linguistic information such as appears in dictionaries. Thus encyclopedias may contain material that is also found in dictionaries, and vice versa. In particular, dictionary entries often contain factual information about the thing named by the word.


History

Encyclopedias have progressed from the beginning of history in written form, through medieval and modern times in print, and most recently, displayed on computer and distributed via computer networks, including the Internet.


Written encyclopedias

The earliest encyclopedic work to have survived to modern times is the '' Naturalis Historia'' of Pliny the Elder, a Roman statesman living in the 1st century AD. He compiled a work of 37 chapters covering natural history, architecture, medicine, geography, geology, and all aspects of the world around him. This work became very popular in
Antiquity Antiquity or Antiquities may refer to: Historical objects or periods Artifacts *Antiquities, objects or artifacts surviving from ancient cultures Eras Any period before the European Middle Ages (5th to 15th centuries) but still within the histo ...
, was one of the first classical manuscripts to be printed in 1470, and has remained popular ever since as a source of information on the Roman world, and especially Roman art,
Roman technology Roman technology is the collection of antiques, skills, methods, processes, and engineering practices which supported Roman civilization and made possible the expansion of the economy and military of ancient Rome (753 BC – 476 AD). The Roma ...
and
Roman engineering The ancient Romans were famous for their advanced engineering accomplishments. Technology for bringing running water into cities was developed in the east, but transformed by the Romans into a technology inconceivable in Greece. The architecture ...
. The Spanish scholar
Isidore of Seville Isidore of Seville ( la, Isidorus Hispalensis; c. 560 – 4 April 636) was a Spanish scholar, theologian, and archbishop of Seville. He is widely regarded, in the words of 19th-century historian Montalembert, as "the last scholar of ...
was the first Christian writer to try to compile a ''
summa Summa and its diminutive summula (plural ''summae'' and ''summulae'', respectively) was a medieval didactics literary genre written in Latin, born during the 12th century, and popularized in 13th century Europe. In its simplest sense, they might ...
'' of universal knowledge, the '' Etymologiae'' (c. 600–625), also known by classicists as the ''Origines'' (abbreviated ''Orig''.). This encyclopedia—the first such Christian
epitome An epitome (; gr, ἐπιτομή, from ἐπιτέμνειν ''epitemnein'' meaning "to cut short") is a summary or miniature form, or an instance that represents a larger reality, also used as a synonym for embodiment. Epitomacy represents "t ...
—formed a huge compilation of 448 chapters in 20 volumesMacFarlane 1980:4; MacFarlane translates ''Etymologiae'' viii. based on hundreds of classical sources, including ''Natural Historia''. Of Etymologiae in its time it was said ''quaecunque fere sciri debentur'', "practically everything that it is necessary to know". Among the areas covered were: grammar,
rhetoric Rhetoric () is the art of persuasion, which along with grammar and logic (or dialectic), is one of the three ancient arts of discourse. Rhetoric aims to study the techniques writers or speakers utilize to inform, persuade, or motivate parti ...
,
mathematics Mathematics is an area of knowledge that includes the topics of numbers, formulas and related structures, shapes and the spaces in which they are contained, and quantities and their changes. These topics are represented in modern mathematics ...
, geometry, music, astronomy, medicine, law, the Catholic Church and heretical sects,
pagan Paganism (from classical Latin ''pāgānus'' "rural", "rustic", later "civilian") is a term first used in the fourth century by early Christians for people in the Roman Empire who practiced polytheism, or ethnic religions other than Judaism. ...
philosopher A philosopher is a person who practices or investigates philosophy. The term ''philosopher'' comes from the grc, φιλόσοφος, , translit=philosophos, meaning 'lover of wisdom'. The coining of the term has been attributed to the Greek th ...
s, languages, cities, animals and birds, the physical world, geography, public buildings, roads, metals,
rock Rock most often refers to: * Rock (geology), a naturally occurring solid aggregate of minerals or mineraloids * Rock music, a genre of popular music Rock or Rocks may also refer to: Places United Kingdom * Rock, Caerphilly, a location in Wales ...
s, agriculture, ships,
clothes Clothing (also known as clothes, apparel, and attire) are items worn on the human body, body. Typically, clothing is made of fabrics or textiles, but over time it has included garments made from animal skin and other thin sheets of materials ...
,
food Food is any substance consumed by an organism for nutritional support. Food is usually of plant, animal, or fungal origin, and contains essential nutrients, such as carbohydrates, fats, proteins, vitamins, or minerals. The substance is inge ...
, and tools. Another Christian encyclopedia was the ''Institutiones divinarum et saecularium litterarum'' of Cassiodorus (543-560) dedicated to the Christian Divinity and to the seven liberal arts. The encyclopedia of
Suda The ''Suda'' or ''Souda'' (; grc-x-medieval, Σοῦδα, Soûda; la, Suidae Lexicon) is a large 10th-century Byzantine encyclopedia of the ancient Mediterranean world, formerly attributed to an author called Soudas (Σούδας) or Souidas ...
, a massive 10th-century Byzantine encyclopedia, had 30,000 entries, many drawing from ancient sources that have since been lost, and often derived from medieval
Christian Christians () are people who follow or adhere to Christianity, a monotheistic Abrahamic religion based on the life and teachings of Jesus Christ. The words ''Christ'' and ''Christian'' derive from the Koine Greek title ''Christós'' (Χρι ...
compilers. The text was arranged alphabetically with some slight deviations from common vowel order and place in the Greek alphabet. From India, the Siribhoovalaya (Kannada: ಸಿರಿಭೂವಲಯ), dated between 800 A.D. to 15th century, is a work of kannada literature written by Kumudendu Muni, a Jain monk. It is unique because rather than employing alphabets, it is composed entirely in Kannada numerals. Many philosophies which existed in the Jain classics are eloquently and skillfully interpreted in the work. The enormous encyclopedic work in China of the '' Four Great Books of Song'', compiled by the 11th century during the early Song dynasty (960–1279), was a massive literary undertaking for the time. The last encyclopedia of the four, the ''
Prime Tortoise of the Record Bureau ''Cefu Yuangui'' (冊府元龜) is the largest ''leishu'' (encyclopedia) compiled during the Chinese Song Dynasty (AD 960–1279). It was the last of the '' Four Great Books of Song'', the previous three having been published in the 10th cen ...
'', amounted to 9.4 million Chinese characters in 1,000 written volumes. There were many great encyclopedists throughout Chinese history, including the scientist and statesman
Shen Kuo Shen Kuo (; 1031–1095) or Shen Gua, courtesy name Cunzhong (存中) and pseudonym Mengqi (now usually given as Mengxi) Weng (夢溪翁),Yao (2003), 544. was a Chinese polymathic scientist and statesman of the Song dynasty (960–1279). Shen wa ...
(1031–1095) with his ''
Dream Pool Essays ''The Dream Pool Essays'' (or ''Dream Torrent Essays'') was an extensive book written by the Chinese polymath and statesman Shen Kuo (1031–1095), published in 1088 during the Song dynasty (960–1279) of China. Shen compiled this encycloped ...
'' of 1088, the statesman, inventor, and agronomist Wang Zhen (active 1290–1333) with his ''Nong Shu'' of 1313, and the written ''Tiangong Kaiwu'' of Song Yingxing (1587–1666), the latter of whom was termed the " Diderot of China" by British historian
Joseph Needham Noel Joseph Terence Montgomery Needham (; 9 December 1900 – 24 March 1995) was a British biochemist, historian of science and sinologist known for his scientific research and writing on the history of Chinese science and technology, in ...
.Needham, Volume 5, Part 7, 102.


Printed encyclopedias

Before the advent of the printing press, encyclopedic works were all hand copied and thus rarely available, beyond wealthy patrons or monastic men of learning: they were expensive, and usually written for those extending knowledge rather than those using it. During the Renaissance, the creation of printing allowed a wider diffusion of encyclopedias and every scholar could have his or her own copy. The '' De expetendis et fugiendis rebus'' by Giorgio Valla was posthumously printed in 1501 by
Aldo Manuzio Aldus Pius Manutius (; it, Aldo Pio Manuzio; 6 February 1515) was an Italian printer and humanist who founded the Aldine Press. Manutius devoted the later part of his life to publishing and disseminating rare texts. His interest in and preserv ...
in
Venice Venice ( ; it, Venezia ; vec, Venesia or ) is a city in northeastern Italy and the capital of the Veneto Regions of Italy, region. It is built on a group of 118 small islands that are separated by canals and linked by over 400  ...
. This work followed the traditional scheme of liberal arts. However, Valla added the translation of ancient Greek works on mathematics (firstly by
Archimedes Archimedes of Syracuse (;; ) was a Greek mathematician, physicist, engineer, astronomer, and inventor from the ancient city of Syracuse in Sicily. Although few details of his life are known, he is regarded as one of the leading scientists ...
), newly discovered and translated. The ''Margarita Philosophica'' by
Gregor Reisch Gregor Reisch (c. 1467 - 9 May 1525) was a German Carthusian monk and humanist scholar. He is best known for his compilation ''Margarita Philosophica'', one of the earliest printed encyclopedias of general knowledge. Life Reisch was born at Balin ...
, printed in 1503, was a complete encyclopedia explaining the seven liberal arts. Financial, commercial, legal, and intellectual factors changed the size of encyclopedias. Middle classes had more time to read and encyclopedias helped them to learn more. Publishers wanted to increase their output so some countries like Germany started selling books missing alphabetical sections, to publish faster. Also, publishers could not afford all the resources by themselves, so multiple publishers would come together with their resources to create better encyclopedias. Later, rivalry grew, causing copyright to occur due to weak underdeveloped laws. John Harris is often credited with introducing the now-familiar alphabetic format in 1704 with his English ''Lexicon Technicum: Or, A Universal English Dictionary of Arts and Sciences: Explaining not only the Terms of Art, but the Arts Themselves'' – to give its full title. Organized alphabetically, its content does indeed contain explanation not merely of the terms used in the arts and sciences, but of the arts and sciences themselves. Sir Isaac Newton contributed his only published work on chemistry to the second volume of 1710.


Encyclopédie


Encyclopædia Britannica

The '' Encyclopædia Britannica'', had a modest beginning in Scotland: the first edition, issued between 1768 and 1771, had just three hastily completed volumes – A–B, C–L, and M–Z – with a total of 2,391 pages. By 1797, when the third edition was completed, it had been expanded to 18 volumes addressing a full range of topics, with articles contributed by a range of authorities on their subjects. The ''Encyclopædia Britannica'' appeared in various editions throughout the nineteenth century, and the growth of popular education and the Mechanics' Institutes, spearheaded by the Society for the Diffusion of Useful Knowledge led to the production of the '' Penny Cyclopaedia'', as its title suggests issued in weekly numbers at a penny each like a newspaper. In the early 20th century, the ''Encyclopædia Britannica'' reached its eleventh edition, and inexpensive encyclopedias such as ''
Harmsworth's Universal Encyclopaedia ''Harmsworth's Universal Encyclopaedia'' is an encyclopedia edited by John Hammerton and published in London, England by The Education Book Co. Ltd., a subsidiary of Northcliffe's Amalgamated Press, in 1921/22. Aimed at a middle-income market ...
'' and '' Everyman's Encyclopaedia'' were common.


Brockhaus

The German-language '' Conversations-Lexikon'' was published at Leipzig from 1796 to 1808, in 6 volumes. Paralleling other 18th century encyclopedias, its scope was expanded beyond that of earlier publications, in an effort at comprehensiveness. It was, however, intended not for scholarly use but to provide results of research and discovery in a simple and popular form without extensive detail. This format, a contrast to the ''Encyclopædia Britannica'', was widely imitated by later 19th century encyclopedias in Britain, the United States, France, Spain, Italy and other countries. Of the influential late-18th century and early-19th century encyclopedias, the ''Conversations-Lexikon'' is perhaps most similar in form to today's encyclopedias.


E.s in the US

In the United States, the 1950s and 1960s saw the introduction of several large popular encyclopedias, often sold on installment plans. The best known of these were '' World Book'' and '' Funk and Wagnalls''. As many as 90% were sold
door to door Door-to-door is a canvassing technique that is generally used for sales, marketing, advertising, evangelism or campaigning, in which the person or persons walk from the door of one house to the door of another, trying to sell or advertise a pro ...
. Jack Lynch says in his book ''You Could Look It Up'' that encyclopedia salespeople were so common that they became the butt of jokes. He describes their sales pitch saying, "They were selling not books but a lifestyle, a future, a promise of social mobility." A 1961 ''World Book'' ad said, "You are holding your family's future in your hands right now," while showing a feminine hand holding an order form.


Digital encyclopedias

By the late 20th century, encyclopedias were being published on
CD-ROM A CD-ROM (, compact disc read-only memory) is a type of read-only memory consisting of a pre-pressed optical compact disc that contains data. Computers can read—but not write or erase—CD-ROMs. Some CDs, called enhanced CDs, hold both comput ...
s for use with personal computers. Microsoft's '' Encarta'', launched in 1993, was a landmark example as it had no printed equivalent. Articles were supplemented with video and audio files as well as numerous high-quality images. After sixteen years, Microsoft discontinued the Encarta line of products in 2009. Digital encyclopedias enable "Encyclopedia Services" (e.g.
Wikimedia Enterprise Wikimedia Enterprise is a commercial product by the Wikimedia Foundation to provide, in a more easily consumable way, the data of the Wikimedia projects, including Wikipedia. It allows customers to retrieve data at large scale and high availability ...
) to facilitate programatic access to the content.


Free encyclopedias

The concept of a free encyclopedia began with the Interpedia proposal on Usenet in 1993, which outlined an Internet-based online encyclopedia to which anyone could submit content and that would be freely accessible. Early projects in this vein included Everything2 and
Open Site Open-Site, the Open Encyclopedia Project was a free internet encyclopedia operated by Michael J. Flickinger in an effort to build a free categorized community-built encyclopedia, inspired by DMOZ. The Open Site software was open-source software ...
. In 1999, Richard Stallman proposed the
GNUPedia GNE (originally GNUPedia) was a project to create a free content online encyclopedia, licensed under the GNU Free Documentation License, under the auspices of the Free Software Foundation. The project was proposed by Richard Stallman in Decembe ...
, an online encyclopedia which, similar to the GNU operating system, would be a "generic" resource. The concept was very similar to Interpedia, but more in line with Stallman's GNU philosophy. It was not until Nupedia and later Wikipedia that a stable free encyclopedia project was able to be established on the Internet. The English Wikipedia, which was started in 2001, became the world's largest encyclopedia in 2004 at the 300,000 article stage. By late 2005, Wikipedia had produced over two million articles in more than 80 languages with content licensed under the copyleft
GNU Free Documentation License The GNU Free Documentation License (GNU FDL or simply GFDL) is a copyleft license for free documentation, designed by the Free Software Foundation (FSF) for the GNU Project. It is similar to the GNU General Public License, giving readers the r ...
. As of August 2009, Wikipedia had over 3 million articles in English and well over 10 million combined in over 250 languages. Wikipedia currently has articles in English. Since 2003, other free encyclopedias like the Chinese-language Baidu Baike and Hudong, as well as English language encyclopedias such as Citizendium and
Knol Knol was a Google project that aimed to include user-written articles on a range of topics. The lower-case term ''knol'', which Google defined as a "unit of knowledge", referred to an article in the project. Knol was often viewed as a rival to W ...
have appeared, the latter of which has been discontinued.


Online encyclopedias

In January 1995, Project Gutenberg started to publish the ASCII text of the '' Encyclopædia Britannica'', 11th edition (1911), but disagreement about the method halted the work after the first volume. For trademark reasons this has been published as the ''
Gutenberg Encyclopedia Johannes Gensfleisch zur Laden zum Gutenberg (; – 3 February 1468) was a German inventor and craftsman who introduced letterpress printing to Europe with his movable-type printing press. Though not the first of its kind, earlier designs w ...
''. Project Gutenberg later restarted work on digitising and proofreading this encyclopedia. Project Gutenberg has published volumes in alphabetic order the most recent publication is ''Volume 17 Slice 8: Matter–Mecklenburg'' published on 7 April 2013. The latest ''Britannica'' was digitized by its publishers, and sold first as a CD-ROM, and later as an online service. In 2001, ASCII text of all 28 volumes was published on ''Encyclopædia Britannica'' Eleventh Edition by source; a copyright claim was added to the materials included. The website no longer exists, but the contents are available from the Internet Archive. Other digitization projects have made progress in other titles. One example is '' Easton's Bible Dictionary (1897)'' digitized by the Christian Classics Ethereal Library. A successful digitization of an encyclopedia was the Bartleby Project's online adaptation of the '' Columbia Encyclopedia'', Sixth Edition, in early 2000 and is updated periodically. Other websites provide online encyclopedias, some of which are also available on Wikisource, but which may be more complete than those on Wikisource, or maybe different editions (see
List of online encyclopedias This is a list of well-known online encyclopedias—i.e., encyclopedias accessible or formerly accessible on the Internet. The largest online encyclopedias are general reference works, though there are also many specialized ones. Some online ency ...
). Another related branch of activity is the creation of new, free content on a volunteer basis. In 1991, the participants of the Usenet newsgroup started a project to produce a real version of '' The Hitchhiker's Guide to the Galaxy'', a fictional encyclopedia used in the works of Douglas Adams. It became known as Project Galactic Guide. Although it originally aimed to contain only real, factual articles, the policy was changed to allow and encourage semi-real and unreal articles as well. Project Galactic Guide contains over 1700 articles, but no new articles have been added since 2000; this is probably partly due to the founding of h2g2, a more official project along similar lines. The 1993 Interpedia proposal was planned as an encyclopedia on the Internet to which everyone could contribute materials. The project never left the planning stage and was overtaken by a key branch of old printed encyclopedias. Another early online encyclopedia was called the ''Global Encyclopedia''. In November 1995 a review of it was presented by James Rettig (Assistant Dean of University Libraries for Reference and Information Services) College of William & Mary at the 15th Annual Charleston Conference on library acquisitions and related issues. He said of the ''Global Encyclopedia'': He then gives several examples of article entries such as
Iowa City Iowa City, offically the City of Iowa City is a city in Johnson County, Iowa, United States. It is the home of the University of Iowa and county seat of Johnson County, at the center of the Iowa City Metropolitan Statistical Area. At the time ...
: Wikipedia is a free content, multilingual online encyclopedia written and maintained by a community of volunteer contributors through a model of
open collaboration Open collaboration is any "system of innovation or production that relies on goal-oriented yet loosely coordinated participants who interact to create a product (or service) of economic value, which is made available to contributors and noncontribu ...
. It is the largest and most-read reference work in history. Wikipedia originally developed from another encyclopedia project called Nupedia.


CD-ROM encyclopedias

A CD-ROM encyclopedia is an encyclopedia delivered as reference software on a
CD-ROM A CD-ROM (, compact disc read-only memory) is a type of read-only memory consisting of a pre-pressed optical compact disc that contains data. Computers can read—but not write or erase—CD-ROMs. Some CDs, called enhanced CDs, hold both comput ...
disc for use on a personal computer. This was the usual way computer users accessed encyclopedic knowledge from the 1980s and 1990s. Later DVD discs replaced CD-ROMs and from mid-2000s
internet encyclopedias An encyclopedia (American English) or encyclopædia (British English) is a reference work or compendium providing summaries of knowledge either general or special to a particular field or discipline. Encyclopedias are divided into articles ...
became dominant and replaced disc-based software encyclopedias. Some examples of CD-ROM encyclopedia are '' Encarta'', Grolier Multimedia Encyclopedia, and ''Britannica''. CD-ROM encyclopedias were usually a macOS or
Microsoft Windows Windows is a group of several proprietary graphical operating system families developed and marketed by Microsoft. Each family caters to a certain sector of the computing industry. For example, Windows NT for consumers, Windows Server for serv ...
(3.0, 3.1 or 95/98) application on a CD-ROM disc. The user would execute the encyclopedia's software program to see a menu that allowed them to start browsing the encyclopedia's articles, and most encyclopedias also supported a way to search the contents of the encyclopedia. The article text was usually
hyperlinked ''Hyperlinked'' is an American semi-autobiography streaming television series produced exclusively for YouTube Premium, featuring the now-disbanded music group L2M. The series was created by Juliette Brindak Blake, Hermine Brindak and Larry Re ...
and also included photographs,
audio Audio most commonly refers to sound, as it is transmitted in signal form. It may also refer to: Sound *Audio signal, an electrical representation of sound *Audio frequency, a frequency in the audio spectrum *Digital audio, representation of sound ...
clips (for example in articles about historical speeches or musical instruments), and
video clips Video clips refer to mostly short videos, most of the time called memes, which are short videos of silly jokes and funny clips, most of the time coming from movies or any entertainment videos such as YouTube. The term is also used more loosely to ...
. In the CD-ROM age the video clips had usually a low resolution, often 160x120 or 320x240 pixels. Such encyclopedias which made use of photos, audio and video were also called multimedia encyclopedias. However, because of the online encyclopedia, CD-ROM encyclopedias have been declared obsolete.


See also

* Bibliography of encyclopedias * Biographical dictionary *
Encyclopedic knowledge To have encyclopedic knowledge is to have "vast and complete" knowledge about a large number of diverse subjects. A person having such knowledge is called a human encyclopedia or a walking encyclopedia. The concept of encyclopedic knowledge was ...
* Encyclopedism * Fictitious entry *
History of science and technology The history of science and technology (HST) is a field of history that examines the understanding of the natural world (science) and the ability to manipulate it (technology) at different points in time. This academic discipline also studies the c ...
* Lexicography * Library science * Lists of encyclopedias * Thesaurus * Speculum literature


Notes


References

* * * * C. Codoner, S. Louis, M. Paulmier-Foucart, D. Hüe, M. Salvat, A. Llinares, ''L'Encyclopédisme. Actes du Colloque de Caen'', A. Becq (dir.), Paris, 1991. * * * * * * * * * * * * *


External links


Encyclopaedia and Hypertext


– Biographical errors in encyclopedias and almanacs
Encyclopedia
– Diderot's article on the Encyclopedia from the original Encyclopédie.
De expetendis et fugiendis rebus
– First Renaissance encyclopedia

* ttps://web.archive.org/web/20131109213126/http://reviews.cnet.com/1990-3118_7-6378998-1.html Digital encyclopedias put the world at your fingertips
CNET ''CNET'' (short for "Computer Network") is an American media website that publishes reviews, news, articles, blogs, podcasts, and videos on technology and consumer electronics globally. ''CNET'' originally produced content for radio and televi ...
article
Encyclopedias online
University of Wisconsin Stout listing by category
Chambers' ''Cyclopaedia''
1728, with the 1753 supplement
''Encyclopædia Americana''
1851, Francis Lieber ed. (Boston: Mussey & Co.) at the University of Michigan Making of America site
''Encyclopædia Britannica''
articles and illustrations from 9th ed., 1875–89, and 10th ed., 1902–03. * {{Authority control Works about history