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<center>'''"Share your knowledge. It's a way to achieve immortality."'''</center>
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<center>'''"The ink of the learned is equal in merit to the blood of the martyrs."'''</center>
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<center>'''"Knowledge is the true organ of sight, not the eyes."'''</center>
<center>&mdash;From the [[Panchatantra|Panchatantra]] [http://www.britannica.com/EBchecked/topic/440899/Panchatantra (Indian literature)]</center>
<center>'''"The ink of the learned is equal in merit to the blood of the martyrs."'''</center>
<center>&mdash;Father Kristoforos, [http://www.randomhouse.com/catalog/display.pperl?isbn=9781400079322&view=rg ''Birds Without Wings''], by [http://www.contemporarywriters.com/authors/?p=auth2 Louis de Bernières (b. 1954)]</center> -->
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=== Draft of the Week <font size=1>[ [[CZ:Article of the Week|about]] ]</font> ===
Scientists use a '''[[scientific method]]''' to investigate phenomena and acquire [[knowledge]]. They base the method on verifiable observation &mdash; i.e., on [[empirical]] evidence rather than on pure logic or supposition &mdash; and on the [[reasoning|principles of reasoning]].  Scientists propose explanations &mdash; called 'hypotheses' &mdash; for their observed phenomena, and perform experiments to determine whether the results accord with (support) the hypotheses or falsify them. They also formulate '[[Theory#Science|theories]]' that encompass whole domains of inquiry, and which bind supported hypotheses together into logically coherent wholes. They refer to theories sometimes as ‘models’, which may or may not have a mathematical or computational basisThe technological achievements of the modern world have led many to conclude that the success of science stems from the methodological rules that scientists follow. Not all philosophers and scientists accept that conclusion, and some deny that science has a genuinely methodological process at all.<font size=1>[[Scientific method|['''more...''']]]</font>


=== New Draft of the Week <font size=1>[ [[CZ:New Draft of the Week|about]] ]</font> ===
The '''[[McGuffey Readers]]''', first published in 1836-37, were a set of highly influential [[school]] textbooks for use in the elementary and higher grades in the United States. Indeed, owing to their widespread usage over many years, they played an important role in shaping the American character itself. From the year in which they were first published, and for nearly a century thereafter, successive generations of American schoolchildren used these readers to acquire basic [[literacy]] skills and to imbibe the moral lessons they taught.


[[William Holmes McGuffey]] (1800-73) was the author/compiler of the first four volumes of the first edition of what would eventually become a six-volume set of graded readers. In subsequent years, a series of editors took over the responsibility for the readers, which nevertheless were faithful in retaining their original character as moral shapers of youth.


A major revision in 1879 altered the slant of the readers away from the stark [[Calvinism]] which had characterized the earlier versions, but did so without sacrificing the basic [[religion|religious]] and [[morality|moral]] objectives.
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<h4 style="margin:0 0 0.75em; padding:0;"> '''Article counts''' </h4>
<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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The readers have sold over 125 million copies, and remain in demand among many who are dissatisfied with modern trends in education and seek a return to a more traditional, "values oriented" education of an earlier era.<font size=1>[[McGuffey Readers|['''more...''']]]</font>  
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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>
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<div style='text-align: right;'><small>''[[{{FeaturedArticleTitle}}|Continued]]...''</small></div>

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.

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Article counts

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

Education is not filling a bucket but lighting a fire.
William Butler Yeats

       —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