Since 1985, the "Britannica" has had four parts: the "Micropædia," the "Macropædia," the "Propædia," and a two-book index. The "Britannica"'s articles are found in the "Micropædia" and "Macropædia," which contain 12 and 17 books, respectively, each book having about one thousand pages. The 2007 "Macropædia" has 699 detailed articles, which can be as short as 2 pages and as long as 310 pages, and having references and named writers. The 2007 "Micropædia" has about 65,000 articles, and about 97% contain less than 750 words, no references, and no named contributors. The "Micropædia" articles are supposed to be for quick fact-checking and to help in finding more information in the "Macropædia". The "Macropædia" articles are supposed to be well-written articles on their subjects and articles of information where you cannot find anywhere else. The longest article (310 pages) is on the United States, and came from putting the articles on the individual states together.
Information can be found in the "Britannica" by following the notes telling where people can find more information in the "Micropædia" and "Macropædia"; but there are very little of this, with about only one of this every page. So, readers are asked to try to use the indexes or the "Propædia", which organises what is in the "Britannica" volumes by topic.
The use of the "Propædia" is its "Outline of Knowledge," which wants to organise all of everything people know. The Outline is thought through by the "Britannica"'s editors to decide which articles should be included in the "Micropædia" and "Macropædia". The Outline is also intended to be a study guide, and to tell a student who wants to learn a topic in depth what articles to use. However, libraries say that very few people use it, and reviewers recommend the encyclopedias to not print it anymore. The "Propædia" also has diagrams printed on transparent paper of big topics and a section which lists the people working together to make the encyclopaedia.
Altogether, the "Micropædia" and "Macropædia" have about 40 million words and 24,000 pictures. The index has 2,350 pages, which lists all the 228,274 topics written about in the "Britannica,". The "Britannica" uses the British spellings and not American spellings. For example, it uses "colour" (not "color"), "centre" (not "center"), and "encyclopaedia" (not "encyclopedia"). However, this rule is not always followed, for example "defense" and not "defence". The other spellings of the word is sometimes shown with a link, for example "Color: "see" Colour."
Since 1936, the articles of the "Britannica" have been revised often, with about 10% of the articles brought to be re-written each year. One Britannica website said in 2007 that 46% of the articles were revised in the past three years; but another Britannica web-site says only 35% of the articles were revised.
The way the articles are arranged (in alphabet order) in the "Micropædia" and "Macropædia" is very accurate. Non-English letters are ignored and articles with numbers such as "War of 1812" are arranged as if the number had been written out ("War of Eighteen-twelve"). If the articles have the same names, articles about persons go first, then by places, then by things. People with the same names are arranged first alphabetically by country and then by their time. Similarly, places that have the same names are arranged by alphabet by the country they are in.
There are a few smaller versions of the "Britannica" encyclopedias. The "Britannica Concise Encyclopædia", written in one book, has 28,000 shorter articles. "Compton's by Britannica," published in 2007, with the old "Compton's Encyclopedia," in it is written for teenagers who are 10–17 years old and has 26 books and 11,000 pages in it. A "Children's Britannica" was published by the company in 1960; this was edited by John Armitage and written for His Royal Highness the Prince of Wales; the writers were almost all British. Other books are "My First Britannica", written for children who are six to twelve years old, and the "Britannica Discovery Library", written for children who are three to six years old (issued in 1974 to 1991). Since 1938, Encyclopædia Britannica, Inc. has published a "Book of the Year" every year, with information about the past year's events, which is written online since the 1994 edition (with the events of 1993). The company also publishes a few books on special topics, such as "Shakespeare: The Essential Guide to the Life and Works of the Bard" (Wiley, 2006).
The "Britannica Ultimate Reference Suite 2006 DVD" contains over 55 million words and over 100,000 articles. It includes 73,645 "Britannica" articles, with the other articles from the "Britannica Student Encyclopædia," the "Britannica Elementary Encyclopædia" and the "Britannica Book of the Year"s (1993–2004), plus a few old articles from old editions of the encyclopaedia. The whole DVD also includes other bonus tools including maps, videos, sound clips, animations and web links. It also has study tools and a dictionary and thesaurus from Merriam-Webster.
"Encyclopædia Britannica Online" is a web site with more than 120,000 articles and is updated often. It has features, updates and links to news reports from "The New York Times" and the BBC every day. People need to pay to use the website. Special discounts are given to schools, colleges and libraries since these big groups of people are important in Britannica's business. Articles can be read online for free, but only the first few sentences can be seen. Beginning in early 2007, the "Britannica" let people read the articles for free if they are linked to another website, since these links let the articles appear more often and easily in search engines.
On 20 February 2007, Encyclopædia Britannica, Inc. said that it was working with mobile phone search company AskMeNow to make an encyclopaedia in phones. Users can send a question by text message, and AskMeNow will search "Britannica"'s 28,000-article encyclopaedia to answer the user.
An idea to use a wiki-Britannica was announced on the June 3, 2008. A lot of people will be involved, with the Britannica staff editing important parts.
Pipeline
A pipeline is a long tube, that is used to transport liquids or gases over long distances. Pipelines are made of metal. While the transport of liquids and gases is common, some pipelines are used to transport coal or iron ore, which are mixed with mud. Such pipelines are sometimes called slurry pipelines. Even though a pipeline is very expensive to build, the low operating cost often makes it the cheapest transport.
Many stadiums use a central tank for beer. Each bar is served by a pipeline from the central tank.
Even though mail and other goods can also be delivered that way, the system is generally not referred to as "pipeline". In this case, capsules are used. These are propelled by air.
Pipeline networks are made of different components. These are:
Avocado
An avocado is a berry. It has medium dark green or dark green bumpy or smooth skin depending on the variety.
The flesh of an avocado is deep chartreuse green in color near the skin and pale chartreuse green near the core. It has a creamy, rich texture.
The word, Avocado came from a aztec word meaning testicle.
Avocado trees come from Central America and Mexico. They can grow in many places, as long as it is not too cold.
Avocados have much more fat than most other fruit, but most is fat that is healthy to eat (monounsaturated fat). Avocados have lots of potassium, B vitamins, and vitamin E and K.
The Mexican food called guacamole is made of avocados. Many other foods are also made from avocado.
Avocado is poisonous to some animals. Many animals will get very sick or die if they eat avocado.
Ice hockey