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(Launch before end of month; delay due to delayed servers)
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=== '''Help Write Articles about our World''' ===
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!''Not yet a Citizen?''
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>.
[http://www.citizendium.org/cfa.html Join here.]
 
----
 
See '''<big>[[Special:RecentChanges|Recent Changes]]</big>'''&mdash;an overview of articles being worked on ''now''.
 
===='''Become a member--it's free!'''====
* '''[[Help:Index/Join|Join this wiki]]'''.
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<small><b>
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|'''<big>[https://driftingharbor.wordpress.com/2022/12/16/why-save-citizendium-my-reason-number-1/ Why save Citizendium? My reason number 1.]</big>'''<br/>
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;<span><big>Welcome to the ''Citizendium'' Pilot Project!</big></span>
The ''Citizendium'' ([http://www.citizendium.org/cit.mp3 sit-ih-ZEN-dee-um]), a "citizens' compendium of everything," is an experimental new wiki project.  The project, started by a founder of Wikipedia, aims to improve on ''that'' model by adding "gentle expert oversight" ''and'' requiring contributors to use their real names.


As of March 19, 2007, we were working on '''[[:Category:CZ Live|over 1,100 articles]].'''
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We should be launching into public view before the end of the month.  Our apologies, but we have been waiting for the delivery of four new servers, which was delayed.
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;<span>[[:Category:CZ Live|Browse articles alphabetically]]</span>
The list is constantly growing.


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;<span>'''[[:Category:Approved Articles|Approved articles]]'''</span>
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|{{click|image=Approved.png|link=:Category:Approved_Articles|width=35px|height=35px}} ||Some of Citizendium's finest.  <small>([[CZ:Approval Process|about]])</small>
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;<span>Entry points </span>
Workgroup homepages are at &Phi;.


{| border="0" cellpadding="2" cellspacing="0"
|{{click|image=Natural science button.png|link=CZ:Workgroups#Natural_Sciences|width=25px|height=25px}} ||'''Natural Sciences'''
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:[[Astronomy]]&nbsp;[[Citizendium_Pilot:Astronomy Workgroup|&Phi;]] - [[Biology]]&nbsp;[[Citizendium_Pilot:Biology Workgroup|&Phi;]] - [[Chemistry]]&nbsp;[[Citizendium_Pilot:Chemistry Workgroup|&Phi;]] - [[Earth Sciences]]&nbsp;[[Citizendium_Pilot:Earth Sciences Workgroup|&Phi;]] - [[Mathematics]]&nbsp;[[Citizendium_Pilot:Mathematics Workgroup|&Phi;]] - [[Physics]]&nbsp;[[Citizendium_Pilot:Physics Workgroup|&Phi;]]


{| border="0" cellpadding="2" cellspacing="0"
|{{click|image=Social science button.png|link=CZ:Workgroups#Social_Sciences|width=25px|height=25px}} ||'''Social Sciences'''
|}
:[[Anthropology]]&nbsp;[[Citizendium_Pilot:Anthropology Workgroup|&Phi;]] - [[Archaeology]]&nbsp;[[Citizendium_Pilot:Archaeology Workgroup|&Phi;]] - [[Economics]]&nbsp;[[Citizendium_Pilot:Economics Workgroup|&Phi;]] - [[Education]]&nbsp;[[Citizendium_Pilot:Education Workgroup|&Phi;]] - [[Geography]]&nbsp;[[Citizendium_Pilot:Geography Workgroup|&Phi;]] - [[Countries of the world]] - [[Law]]&nbsp;[[Citizendium_Pilot:Law Workgroup|&Phi;]] - [[Linguistics]]&nbsp;[[Citizendium_Pilot:Linguistics Workgroup|&Phi;]] - [[Politics]]&nbsp;[[Citizendium_Pilot:Politics Workgroup|&Phi;]] - [[Psychology]]&nbsp;[[Citizendium_Pilot:Psychology Workgroup|&Phi;]] - [[Sociology]]&nbsp;[[Citizendium_Pilot:Sociology Workgroup|&Phi;]]


{| border="0" cellpadding="2" cellspacing="0"
|{{click|image=Humanities button.png|link=CZ:Workgroups#Humanities|width=25px|height=25px}} ||'''Humanities'''
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:[[Classics]]&nbsp;[[Citizendium_Pilot:Classics Workgroup|&Phi;]] - [[History]]&nbsp;[[Citizendium_Pilot:History Workgroup|&Phi;]] - [[Literature]]&nbsp;[[Citizendium_Pilot:Literature Workgroup|&Phi;]] - [[Philosophy]]&nbsp;[[Citizendium_Pilot:Philosophy Workgroup|&Phi;]] - [[Religion]]&nbsp;[[Citizendium_Pilot:Religion Workgroup|&Phi;]]


{| border="0" cellpadding="2" cellspacing="0"
|{{click|image=Arts button.png|link=CZ:Workgroups#Arts|width=25px|height=25px}} ||'''Arts'''
|}
:[[Architecture]]&nbsp;[[Citizendium_Pilot:Architecture Workgroup|&Phi;]] - [[Music]]&nbsp;[[Citizendium_Pilot:Music Workgroup|&Phi;]] - [[Theater]]&nbsp;[[Citizendium_Pilot:Theater Workgroup|&Phi;]] - [[Visual Arts]]&nbsp;[[Citizendium_Pilot:Visual Arts Workgroup|&Phi;]]


{| border="0" cellpadding="2" cellspacing="0"
|{{click|image=Applied arts button.png|link=CZ:Workgroups#Applied Arts and Sciences|width=25px|height=25px}} ||'''Applied Arts and Sciences'''
|}
:[[Agriculture]]&nbsp;[[Citizendium_Pilot:Agriculture Workgroup|&Phi;]] - [[Business]]&nbsp;[[Citizendium_Pilot:Business Workgroup|&Phi;]] - [[Computer]]s&nbsp;.[[Citizendium_Pilot:Computers Workgroup|&Phi;]] - [[Engineering]]&nbsp;[[Citizendium_Pilot:Engineering Workgroup|&Phi;]] - [[Healing Arts]]&nbsp;[[CZ:Healing Arts Workgroup|&Phi;]] - [[Health Sciences]]&nbsp;[[Citizendium_Pilot:Health Sciences Workgroup|&Phi;]] - [[Journalism]]&nbsp;[[Citizendium_Pilot:Journalism Workgroup|&Phi;]] - [[Library and Information Science]]&nbsp;[[Citizendium_Pilot:Library and Information Science Workgroup|&Phi;]] - [[Media]]&nbsp;[[Citizendium_Pilot:Media Workgroup|&Phi;]] - [[Military]]&nbsp;[[Citizendium_Pilot:Military Workgroup|&Phi;]]


{| border="0" cellpadding="2" cellspacing="0"
|{{click|image=Recreation button.png|link=CZ:Workgroups#Recreation|width=25px|height=25px}}|| '''Recreation'''
|}
:[[Games]]&nbsp;[[Citizendium_Pilot:Games Workgroup|&Phi;]] - [[Hobbies]]&nbsp;[[Citizendium_Pilot:Hobbies Workgroup|&Phi;]] - [[Sports]]&nbsp;[[Citizendium_Pilot:Sports Workgroup|&Phi;]]


|-
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;<span>Welcome section</span>
* For contributors: [[Citizendium_Pilot:How_to_get_started_with_the_Citizendium_pilot|How to get started with the ''Citizendium'' pilot]]
* For readers: [[CZ:About|About the ''Citizendium'']]


Hint: look to the left for other important links.


For technical problems:
* You might need to [http://www.citizendium.org/cfa.html get a contributor account] if you don't have one.
* If you get an odd error message, do a "hard refresh" (ctrl-F5 in Windows) of the page you're trying to view.
* If you are still having trouble, mail [mailto:constables@citizendium.org constables@citizendium.org] immediately.


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;<span>Our project</span>
|-
* [[CZ:Project Home|Project Home!]]
|valign=top style="padding:1em 1em 0.75em;"|
* [[CZ:Project Home#Policy|Project Policy]]  
<h4 style="margin:0 0 0.75em; padding:0;"> '''Article counts''' </h4>
* For notices to people working on this wiki, see [[CZ:Notice Board|the notice board]].
<p style="line-height:21px; padding-left:20px;">
* For news, use [http://blog.citizendium.org the Citizendium Blog.]
[[:Category:Citable versions of articles|Citable Articles]] <font size=1>('''{{PAGESINCAT:Citable versions of articles}}''')</font><br />
* For discussion, use [http://forum.citizendium.org the Citizendium Forums.]
[[:Category:Developed Articles|Developed Articles]] <font size=1>('''{{PAGESINCAT:Developed Articles}}''')</font><br />
* For community-wide announcements, ''feel free'' to use [https://lists.purdue.edu/mailman/listinfo/citizendium-l Citizendium-L.]
[[:Category:Developing Articles|Developing Articles]] <font size=1>('''{{PAGESINCAT:Developing Articles}}''')</font><br />
* For editors' announcements to other editors, ''feel free'' to use [https://lists.purdue.edu/mailman/listinfo/citizendium-editors Citizendium-Editors.]
[[:Category:Stub Articles|Stubs]] <font size=1>('''{{PAGESINCAT:Stub Articles}}''')</font><br />
* Have questions?  [http://forum.citizendium.org/index.php?action=post;board=18.0 Ask here.]
<small>([[:Category:CZ Live|{{PAGESINCAT:CZ Live}} total articles]])</small>
</p>
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{{CZ:Quote}}
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{{-}}
;<span>Our contributors</span>
|-
The ''Citizendium'' is like a lively [http://www.catb.org/~esr/writings/cathedral-bazaar/cathedral-bazaar bazaar], with [[:Category:CZ_Authors|authors]] and expert [[:Category:CZ_Editors|editors]] doing vigorous trade in words.  Editors do not give top-down orders; they offer the occasional word of direction or advice, and can approve articles in their areas of expertise.  [[:Category:CZ_Constables|Constables]], who are barely needed in our very friendly community, ensure everything runs smoothly.  These are all volunteers, contributing their time, energy, and professional expertise in support of a shared vision.
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<h3 style="margin-top:0; padding-top:0.6em; border-top:1px dotted #e0e0e0;">
<big>[[CZ:Featured article|Featured Article]]: ''[[{{FeaturedArticleTitle}}]]''</big>
</h3>
{{CZ:Featured article/Current}}
|}
|}
 
<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
Classics History Music Topic Informant
Computers Hobbies Philosophy Visual Arts


Please help today!
Please make your donations here.
Donations go to keep our servers running. See our financial report.


New Blog Post
Why save Citizendium? My reason number 1.





















Article counts

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


       —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