Encyclopedia

An encyclopedia (American English) or encyclopdia (British English) is a reference work or compendium providing summaries of knowledge either general or special to a particular field or discipline.[1][2] Encyclopedias are divided into articles or entries that are arranged alphabetically by article name[3] or by thematic categories, or else are hyperlinked and searchable.[4] Encyclopedia entries are longer and more detailed than those in most dictionaries.[3][5] Generally speaking, encyclopedia articles focus on factual information concerning the subject named in the article's title;[5] this is unlike dictionary entries, which focus on linguistic information about words, such as their etymology, meaning, pronunciation, use, and grammatical forms.[5][6][7][8][9]

Indeed, the purpose of an encyclopedia is to collect knowledge disseminated around the globe; to set forth its general system to the men with whom we live, and transmit it to those who will come after us, so that the work of preceding centuries will not become useless to the centuries to come; and so that our offspring, becoming better instructed, will at the same time become more virtuous and happy, and that we should not die without having rendered a service to the human race in the future years to come.

Encyclopedia

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The modern encyclopedia evolved from the dictionary in the 18th century; this lineage can be seen in the alphabetical order of print encyclopedias.[18] Historically, both encyclopedias and dictionaries have been compiled by well-educated, well-informed content experts, but they are significantly different in structure. A dictionary is a linguistic work which primarily focuses on alphabetical listing of words and their definitions. Synonymous 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. 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 illustrations, as well as bibliography and statistics.[5] 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.

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). The Macquarie Dictionary, Australia's national dictionary, became an encyclopedic dictionary after its first edition in recognition of the use of proper nouns in common communication, and the words derived from such proper nouns.

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.[3][20] There are differences in content as well. Generally speaking, dictionaries provide linguistic information about words themselves, while encyclopedias focus more on the things for which those words stand.[6][7][8][9] 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.[6]

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.[8][20][21] Thus encyclopedias may contain material that is also found in dictionaries, and vice versa.[21] In particular, dictionary entries often contain factual information about the thing named by the word.[20][21]

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 in Venice. This work followed the traditional scheme of liberal arts. However, Valla added the translation of ancient Greek works on mathematics (firstly by Archimedes), newly discovered and translated. The Margarita Philosophica by Gregor Reisch, printed in 1503, was a complete encyclopedia explaining the seven liberal arts.

Encyclopdie, ou dictionnaire raisonn des sciences, des arts et des mtiers (English: Encyclopedia, or a Systematic Dictionary of the Sciences, Arts, and Crafts),[28] better known as Encyclopdie, was a general encyclopedia published in France between 1751 and 1772, with later supplements, revised editions, and translations. It had many writers, known as the Encyclopdistes. It was edited by Denis Diderot and, until 1759, co-edited by Jean le Rond d'Alembert.[29]

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.[22] 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.[44] As of the 1990s, two of the most prominent encyclopedias published in the United States were Collier's Encyclopedia and Encyclopedia Americana.[45]

By the late 20th century, encyclopedias were being published on CD-ROMs for use with personal computers. This was the usual way computer users accessed encyclopedic knowledge from the 1980s and 1990s. Later, DVD discs replaced CD-ROMs, and by the mid-2000s, internet encyclopedias were dominant and replaced disc-based software encyclopedias.[5]

CD-ROM encyclopedias were usually a macOS or Microsoft Windows (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 and also included photographs, audio clips (for example in articles about historical speeches or musical instruments), and video clips. 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.[by whom?]

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.[46] Other examples of CD-ROM encyclopedia are Grolier Multimedia Encyclopedia and Britannica.

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. In 1999, Richard Stallman proposed the GNUPedia, 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.

The English Wikipedia, which was started in 2001, became the world's largest encyclopedia in 2004 at the 300,000 article stage.[48] 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. As of August 2009,[update] Wikipedia had over 3 million articles in English and well over 10 million combined articles in over 250 languages. Today, Wikipedia has 6,763,733 articles in English, over 60 million combined articles in over 300 languages, and over 250 million combined pages including project and discussion pages.[49]

An encyclopedia is reference material and a tertiary source. A tertiary source is a distillation and collection of primary and secondary sources. A tertiary source is good place to get an overview of a subject.

Original Preface. The Catholic Encyclopedia, as its name implies, proposes to give its readers full and authoritative information on the entire cycle of Catholic interests, action and doctrine. What the Church teaches and has taught; what she has done and is still doing for the highest welfare of mankind; her methods, past and present; her struggles, her triumphs, and the achievements of her members, not only for her own immediate benefit, but for the broadening and deepening of all true science, literature and art  all come within the scope of the Catholic Encyclopedia. It differs from the general encyclopedia in omitting facts and information which have no relation to the Church. On the other hand, it is not exclusively a church encyclopedia, nor is it limited to the ecclesiastical sciences and the doings of churchmen. It records all that Catholics have done, not only in behalf of charity and morals, but also for the intellectual and artistic development of mankind. It chronicles what Catholic artists, educators, poets, scientists and men of action have achieved in their several provinces. In this respect it differs from most other Catholic encyclopedias. The Editors are fully aware that there is no specifically Catholic science, that mathematics, physiology and other branches of human knowledge are neither Catholic, Jewish, nor Protestant; but when it is commonly asserted that Catholic principles are an obstacle to scientific research, it seems not only proper but needful to register what and how much Catholics have contributed to every department of knowledge. 2351a5e196