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!''Pilot only information:''
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* You need to apply to join the pilot project to edit or view other than this pageFollow [http://www.citizendium.org/cfa.html this link] for further details.  Soon, it will be even easier to get on board!
=== '''Help Write Articles about our World''' ===
* Backup major changes elsewhere as the software is undergoing development, and may be down for short periods.
 
* A forge for the software development is [http://forge.citizendium.org/gf/project/caesarwiki/ here,] and a bug tracker for problems is [http://forge.citizendium.org/gf/project/caesarwiki/tracker/ here.]
Welcome to '''Citizendium''', a wiki for providing free knowledge where authors use their '''real names'''.  We regard information as a public good and welcome anyone who wants to share their knowledge on virtually any subject.  Our online community prides itself on being congenial and supportive.  Read more about <big>'''[[CZ:About|who we are]]'''</big>.
 
----
 
See '''<big>[[Special:RecentChanges|Recent Changes]]</big>'''&mdash;an overview of articles being worked on ''now''.
 
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<small><b>
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| [[:Category:Agriculture Workgroup|Agriculture]]
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|}
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;<span style = "color: #003300 ;"><big>Welcome to the ''Citizendium'' Pilot Project </big></span>
[http://www.citizendium.org/cfa.html The Citizendium] (sit-ih-ZEN-dee-um), a "citizens' compendium of everything", is an experimental new wiki project that combines public participation with expert guidance. 


It began life as a "gradual fork" of Wikipedia.  But it has taken on a life of its own and will, perhaps, become the flagship of a new set of responsibly-managed free knowledge projects.  Because there will probably always be articles in the resource that have not been vouched for in any sense, and because the sheer size of the resource actually changes the nature of the beast, it is not an "encyclopedia." 
<blockquote>
 
 
 
 
 
 
 
 
 
 
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It is something new.
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;<span style = "color: #003300 ;">Approved articles </span>
[[CZ:Approval Process|Approved Articles]] represent what Citizendium is all about: Combining the energy of [[Citizendium_Pilot:Policy_Outline#Author_User_Pages|countless contributors]] with the wisdom of [[Citizendium_Pilot:Policy_Outline#Policy_regarding_Individual_Editors|recognized experts]].  Browse the list of [[:Category:Approved Articles|approved articles]] to see some of Citizendium's finest.


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;<span style = "color: #003300 ;">Live articles </span>
[[CZ:How to convert Wikipedia articles to Citizendium articles|Live articles]] are those that have been edited by a Citizendium contributor after being [[Fork (software development)|forked]].  This means that while they have not yet reached the standard of an '''approved article''', work is actively being done on them.  Browse our [[:Category:CZ Live|live article list]] to see if there is one you can help out on.


| style=" width:30%; border: solid 1px #4682b4; margin: 0 0 0 0; padding: 5px; " rowspan = "3" |
;<span style = "color: #003300 ;">Disciplines </span>
Citizendium personnel are informally divided up into [[CZ:Discipline Workgroups|discipline workgroups]].  Workgroup's homepages are at &Phi;.  The articles corresponding to workgroup names are good places to look for important articles to edit, and we want these articles themselves to be excellent as well.


:'''Natural Science'''
:[[Astronomy]] [[Citizendium_Pilot:Astronomy Workgroup|&Phi;]] - [[Biology]] [[Citizendium_Pilot:Biology Workgroup|&Phi;]] - [[Chemistry]] [[Citizendium_Pilot:Chemistry Workgroup|&Phi;]] - [[Earth Sciences]] [[Citizendium_Pilot:Earth Sciences Workgroup|&Phi;]] - [[Health Sciences]] [[Citizendium_Pilot:Health Sciences Workgroup|&Phi;]] - [[Mathematics]] [[Citizendium_Pilot:Mathematics Workgroup|&Phi;]] - [[Physics]] [[Citizendium_Pilot:Physics Workgroup|&Phi;]] - [[Citizendium_Pilot:Other Natural Science Workgroup|Other]]


:'''Social Sciences'''
:[[Anthropology]] [[Citizendium_Pilot:Anthropology Workgroup|&Phi;]] - [[Archaeology]] [[Citizendium_Pilot:Archaeology Workgroup|&Phi;]] - [[Economics]] [[Citizendium_Pilot:Economics Workgroup|&Phi;]] - [[Education]] [[Citizendium_Pilot:Education Workgroup|&Phi;]] - [[Geography]] [[Citizendium_Pilot:Geography Workgroup|&Phi;]] - [[Law]] [[Citizendium_Pilot:Law Workgroup|&Phi;]] - [[Linguistics]] [[Citizendium_Pilot:Linguistics Workgroup|&Phi;]] - [[Politics]] [[Citizendium_Pilot:Politics Workgroup|&Phi;]] - [[Psychology]] [[Citizendium_Pilot:Psychology Workgroup|&Phi;]] - [[Sociology]] [[Citizendium_Pilot:Sociology Workgroup|&Phi;]] - [[CZ:Other Social Science Workgroup|Other]]


:'''Humanities'''
:[[Classics]] [[Citizendium_Pilot:Classics Workgroup|&Phi;]] - [[History]] [[Citizendium_Pilot:History Workgroup|&Phi;]] - [[Literature]] [[Citizendium_Pilot:Literature Workgroup|&Phi;]] - [[Philosophy]] [[Citizendium_Pilot:Philosophy Workgroup|&Phi;]] - [[Religion]] [[Citizendium_Pilot:Religion Workgroup|&Phi;]] - [[Citizendium_Pilot:Other Humanities Workgroup|Other]]


:'''Arts'''
:[[Architecture]] [[Citizendium_Pilot:Architecture Workgroup|&Phi;]] - [[Music]] [[Citizendium_Pilot:Music Workgroup|&Phi;]] - [[Theater]] [[Citizendium_Pilot:Theater Workgroup|&Phi;]] - [[Visual Arts]] [[Citizendium_Pilot:Visual Arts Workgroup|&Phi;]] - [[Citizendium_Pilot:Other Arts Workgroup|Other]]


:'''Applied Arts'''
:[[Agriculture]] [[Citizendium_Pilot:Agriculture Workgroup|&Phi;]] - [[Business]] [[Citizendium_Pilot:Business Workgroup|&Phi;]] - [[Computers]] [[Citizendium_Pilot:Computers Workgroup|&Phi;]] - [[Engineering]] [[Citizendium_Pilot:Engineering Workgroup|&Phi;]] - [[Healing Arts]] [[CZ:Healing Arts Workgroup|&Phi;]] - [[Journalism]] [[Citizendium_Pilot:Journalism Workgroup|&Phi;]] - [[Library and Information Science]] [[Citizendium_Pilot:Library and Information Science Workgroup|&Phi;]] - [[Media]] [[Citizendium_Pilot:Media Workgroup|&Phi;]] - [[Military]] [[Citizendium_Pilot:Military Workgroup|&Phi;]] - [[Citizendium_Pilot:Other Applied Arts Workgroup|Other]]


:'''Recreation'''
|rowspan=2 style="width:50%; border:1px solid #e9e9e9; border-color:rgba(0,0,0,0.05); margin:0; padding:0; background:#fafafa; background:rgba(255,255,255,0.6); vertical-align:top; -moz-border-radius:0 10px 10px;  -webkit-border-radius:10px; -webkit-border-top-left-radius:0; -moz-background-clip:padding; -webkit-background-clip:padding;"|
:[[Games]] [[Citizendium_Pilot:Games Workgroup|&Phi;]] - [[Hobbies]] [[Citizendium_Pilot:Hobbies Workgroup|&Phi;]] - [[Sports]] [[Citizendium_Pilot:Sports Workgroup|&Phi;]] - [[Citizendium_Pilot:Other Recreation Workgroup|Other]]
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;<span style = "color: #003300 ;">Quick Help </span>
<h4 style="margin:0 0 0.75em; padding:0;"> '''Article counts''' </h4>
If this is your first visit, here are some things you must know:
<p style="line-height:21px; padding-left:20px;">
[[:Category:Citable versions of articles|Citable Articles]] <font size=1>('''{{PAGESINCAT:Citable versions of articles}}''')</font><br />
[[:Category:Developed Articles|Developed Articles]] <font size=1>('''{{PAGESINCAT:Developed Articles}}''')</font><br />
[[:Category:Developing Articles|Developing Articles]] <font size=1>('''{{PAGESINCAT:Developing Articles}}''')</font><br />
[[:Category:Stub Articles|Stubs]] <font size=1>('''{{PAGESINCAT:Stub Articles}}''')</font><br />
<small>([[:Category:CZ Live|{{PAGESINCAT:CZ Live}} total articles]])</small>
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{{CZ:Quote}}
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* [[Citizendium_Pilot:How_to_get_started_with_the_Citizendium_pilot|How to get started with the Citizendium pilot]] should answer most initial questions.
{{-}}
* [[Help:Contents]] lists <u>all</u> the help pages - If the answer you want is not there ''somewhere'', it should be.
|-
* For general help, try [http://forum.citizendium.org/index.php?board=18.0 the "Help" board at the CZ Forums].
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<h3 style="margin-top:0; padding-top:0.6em; border-top:1px dotted #e0e0e0;">
For technical problems:
<big>[[CZ:Featured article|Featured Article]]: ''[[{{FeaturedArticleTitle}}]]''</big>
* If you get an odd error message, do a "hard refresh" (ctrl-F5 in Windows) of the page you're trying to view.
</h3>
* If you are still having trouble, mail <u>personnel@citizendium.org</u> immediately.
{{CZ:Featured article/Current}}
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;<span style = "color: #003300 ;">Community </span>
* The [[CZ:Notice Board|notice board]] has the latest announcements and requests, or [http://blog.citizendium.org/| the blog] for general news.
* [[CZ:Policy Outline|Policy Outline (under development)]]  
* [[CZ:How to Edit Citizendium|How to Edit Citizendium]]
* [[CZ:High priority articles for pilot|High priority articles for the pilot project]]
* [http://www.citizendium.org Background information at Citizendium.org]
* [[CZ:Press Coverage|Press Coverage of the Citizendium]]
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;<span style = "color: #003300 ;">Editor Spotlight </span>
Citizendium is created by [[:Category:CZ_Authors|authors]] who contribute content,  [[:Category:CZ_Editors|editors]] who provide professional guidance, and [[:Category:CZ_Constables|constables]] who ensure everything runs smoothly.  These are all volunteers, contributing their time, energy, and profesional expertise in support of a shared vision.
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<div style='text-align: right;'><small>''[[{{FeaturedArticleTitle}}|Continued]]...''</small></div>
[[Category:CZ Live]]

Latest revision as of 19:28, 18 February 2024

Help Write Articles about our World

Welcome to Citizendium, a wiki for providing free knowledge where authors use their real names. We regard information as a public good and welcome anyone who wants to share their knowledge on virtually any subject. Our online community prides itself on being congenial and supportive. Read more about who we are.


See Recent Changes—an overview of articles being worked on now.

Become a member--it's free!

Agriculture Earth Sciences Journalism Physics
Anthropology Economics Law Politics
Archaeology Education Library & Info. Sci. Psychology
Architecture Engineering Linguistics Religion
Astronomy Food Science Literature Robotics
Biology Games Mathematics Sociology
Business Geography Media Sports
Chemistry Health Sciences Military Theater
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Computers Hobbies Philosophy Visual Arts


Please help today!
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New Blog Post
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Article counts

Citable Articles (145)
Developed Articles (1,147)
Developing Articles (8,088)
Stubs (8,029)
(17,529 total articles)

Good prose is like a windowpane.
George Orwell (1903–1950) Why I Write
       —add a quotation about knowledge or writing

Featured Article: Caterpillar Club/Citable Version

The Irvin pin. The eyes have always been red, but there are urban legends about the meanings of other colors.
A pin from another company, possibly Switlik or Standard Parachute. This style is common in catalogs and auctions of military memorabilia.

The Caterpillar Club is an informal association of people who have successfully used a parachute to bail out of a disabled aircraft. After authentication by the parachute maker, applicants receive a membership certificate and a distinctive lapel pin.

History

Before April 28, 1919 there was no way for a pilot to jump out of a plane and then to deploy a parachute. Parachutes were stored in a canister attached to the aircraft, and if the plane was spinning, the parachute could not deploy. Film industry stuntman Leslie Irvin developed a parachute that the pilot could deploy at will from a back pack using a ripcord. He joined the Army Air Corps parachute research team, and in April 1919 he successfully tested his design, though he broke his ankle during the test. Irvin was the first person to make a premeditated free fall jump from an airplane. He went on to form the Irving Airchute Company, which became a large supplier of parachutes. (A clerical error resulted in the addition of the "g" to Irvin and this was left in place until 1970, when the company was unified under the title Irvin Industries Incorporated.) The Irvin brand is now a part of Airborne Systems, a company with operations in Canada, the U.S. and the U.K.[1].

An early brochure [2] of the Irvin Parachute Company credits William O'Connor 24 August 1920 at McCook Field near Dayton, Ohio as the first person to be saved by an Irvin parachute, but this feat was unrecognised. On 20 October 1922 Lieutenant Harold R. Harris, chief of the McCook Field Flying Station, jumped from a disabled Loening W-2A monoplane fighter. Shortly after, two reporters from the Dayton Herald, realising that there would be more jumps in future, suggested that a club should be formed. 'Caterpillar Club' was suggested because the parachute canopy was made of silk, and because caterpillars have to climb out of their cocoons and fly away. Harris became the first member, and from that time forward any person who jumped from a disabled aircraft with a parachute became a member of the Caterpillar Club. Other famous members include General James Doolittle, Charles Lindbergh and (retired) astronaut John Glenn.

In 1922 Leslie Irvin agreed to give a gold pin to every person whose life was saved by one of his parachutes. By 1945 the number of members with the Irvin pins had grown to over 34,000. In addition to the Irvin Air Chute Company and its successors, other parachute manufacturers have also issued caterpillar pins for successful jumps. Irvin/Irving's successor, Airborne Systems Canada, still provides pins to people who made their jump long ago and are just now applying for membership. Another of these is Switlik Parachute Company, which though it no longer makes parachutes, still issues pins.

Footnotes