Encyclopædia Britannica in the context of "Britannica.com"

The Iranian plateau or Persian plateau is a geological feature spanning parts of the Caucasus, Central Asia, South Asia, and West Asia. It makes up part of the Eurasian plate, and is wedged between the Arabian plate and the Indian plate. The plateau is situated between the Zagros Mountains to the west, the Caspian Sea and the Köpet Dag to the north, the Armenian Highlands and the Caucasus Mountains to the northwest, the Strait of Hormuz and the Persian Gulf to the south, and the Indian subcontinent to the southeast.

As a historical region, it includes Parthia, Media, Persis, and some of the previous territories of Greater Iran. The Zagros form the plateau's western boundary, and its eastern slopes may also be included in the term. The Encyclopædia Britannica excludes "lowland Khuzestan" explicitly and characterizes Elam as spanning "the region from the Mesopotamian plain to the Iranian Plateau".

Musical improvisation (also known as musical extemporization) is the creative activity of immediate ("in the moment") musical composition, which combines performance with communication of emotions and instrumental technique as well as spontaneous response to other musicians. Sometimes musical ideas in improvisation are spontaneous, but may be based on chord changes in classical music and many other kinds of music. One definition is a "performance given extempore without planning or preparation". Another definition is to "play or sing (music) extemporaneously, by inventing variations on a melody or creating new melodies, rhythms and harmonies". Encyclopædia Britannica defines it as "the extemporaneous composition or free performance of a musical passage, usually in a manner conforming to certain stylistic norms but unfettered by the prescriptive features of a specific musical text." Improvisation is often done within (or based on) a pre-existing harmonic framework or chord progression. Improvisation is a major part of some types of 20th-century music, such as blues, rock music, jazz, and jazz fusion, in which instrumental performers improvise solos, melody lines and accompaniment parts.

Throughout the eras of the Western art music tradition, including the Medieval, Renaissance, Baroque, Classical, and Romantic periods, improvisation was a valued skill. J. S. Bach, Handel, Mozart, Beethoven, Chopin, Liszt, and many other famous composers and musicians were known especially for their improvisational skills. Improvisation might have played an important role in the monophonic period. The earliest treatises on polyphony, such as the Musica enchiriadis (ninth century), indicate that added parts were improvised for centuries before the first notated examples. However, it was only in the fifteenth century that theorists began making a hard distinction between improvised and written music.

The essence of the rule of law is that all people and institutions within a political body are subject to the same laws. This concept is sometimes stated simply as "no one is above the law" or "all are equal before the law". According to Encyclopædia Britannica, it is defined as "the mechanism, process, institution, practice, or norm that supports the equality of all citizens before the law, secures a nonarbitrary form of government, and more generally prevents the arbitrary use of power."

Legal scholars have expanded the basic rule of law concept to encompass, first and foremost, a requirement that laws apply equally to everyone. "Formalists" add that the laws must be stable, accessible and clear. More recently, "substantivists" expand the concept to include rights, such as human rights, and compliance with international law.

Adamantios Korais or Koraïs (Greek: Ἀδαμάντιος Κοραῆς [aðaˈmandi.os koraˈis]; Latin: Adamantius Coraes; French: Adamance Coray; 27 April 1748 – 6 April 1833) was a Greek scholar credited with laying the foundations of modern Greek literature and a major figure in the Greek Enlightenment. His activities paved the way for the Greek War of Independence and the emergence of a purified form of the Greek language, known as Katharevousa. Encyclopædia Britannica asserts that "his influence on the modern Greek language and culture has been compared to that of Dante on Italian and Martin Luther on German".

Pomponius Mela, who wrote around AD 43, was the earliest known Roman geographer. He was born at the end of the 1st century BC in Tingentera (now Algeciras) and died c. AD 45.

His short work (De situ orbis libri III.) remained in use nearly to the year 1500. It occupies less than one hundred pages of ordinary print, and is described by the Encyclopædia Britannica (1911) as "dry in style and deficient in method, but of pure Latinity, and occasionally relieved by pleasing word-pictures." Except for the geographical parts of Pliny's Historia naturalis (where Mela is cited as an important authority), the De situ orbis is the only formal treatise on the subject in Classical Latin.

Mass production, also known as series production, series manufacture, or continuous production, is the production of substantial amounts of standardized products in a constant flow, including and especially on assembly lines. Together with job production and batch production, it is one of the three main production methods.

The term mass production was popularized by a 1926 article in the Encyclopædia Britannica supplement that was written based on correspondence with Ford Motor Company. The New York Times used the term in the title of an article that appeared before the publication of the Britannica article.

A reference work is a document, such as a paper, book or periodical (or their electronic equivalents), to which one can refer for information. The information is intended to be found quickly when needed. Such works are usually referred to for particular pieces of information, rather than read beginning to end. The writing style used in these works is informative; the authors avoid opinions and the use of the first person, and emphasize facts.

Indices are a common navigation feature in many types of reference works. Many reference works are put together by a team of contributors whose work is coordinated by one or more editors, rather than by an individual author. Updated editions are usually published as needed, in some cases annually, such as Whitaker's Almanack, and Who's Who.

The term Moor is an exonym used in European languages to designate primarily the Muslim populations of North Africa (the Maghreb) and the Iberian Peninsula (particularly al-Andalus) during the Middle Ages.

Moors are not a single, distinct or self-defined people. Europeans of the Middle Ages and the early modern period variously applied the name to Arabs, Berbers, Muslim Europeans, and black peoples. The term has been used in a broad sense to refer to Muslims in general, especially those of Arab or Berber descent, whether living in al-Andalus or North Africa. Related terms such as English "Blackamoor" were also used to refer to black Africans generally in the early modern period. The 1911 Encyclopædia Britannica observed that the term "Moors" had "no real ethnological value." The word has racial connotations and it has fallen out of fashion among scholars since the mid-20th century.