Welcome to Citizendium: Difference between revisions

From Citizendium
Jump to navigation Jump to search
imported>John Stephenson
(Article and New Draft of the Week)
mNo edit summary
 
Line 1: Line 1:
__NOTOC__ __NOEDITSECTION__
__NOTOC__ __NOEDITSECTION__
<!--<div style="height:1em"></div>-->
{|
{|
|-valign="center"
|
|style="width:50%; margin: 0 0 0 0; padding: 5px" colspan = 2; background:#fafafa|
{| align=center style="width:70%; background-color: #f7f7a6; border: solid 3px #f2e0de; padding: 2px;"  
|- align=center
|style="background-color:#e8edd6;"|'''<span>New Blog Post</span>'''
|-align=center
|'''<big>[https://driftingharbor.wordpress.com/2024/07/13/why-is-citizendium-deleting-articles/ Why is Citizendium deleting articles?]</big>'''<br/>
|}
<br/>
=== '''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 <big>'''[[CZ:About|who we are]]'''</big>.


[[Image:Logo400grbeta_small.png|center]]
----


|style="width:50%; border: solid 1px #ffffff; margin: 0 0 0 0; padding: 5px" colspan = 2|
See '''<big>[[Special:RecentChanges|Recent Changes]]</big>'''&mdash;an overview of articles being worked on ''now''.


{|align="center" border="0" cellpadding="3" cellspacing="5"
===='''Become a member--it's free!'''====
|{{click|image=Natural_science_button.png|link=CZ:Workgroups#Natural_Sciences|width=30px|height=30px}}
* '''[[Help:Index/Join|Join this wiki]]'''.
|'''[[CZ:Workgroups#Natural_Sciences|Natural Sciences]]'''&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
* [[CZ:How to start a new_article|Start a new article]] or improve [[CZ:Workgroups|existing articles]]
|{{click|image=Social science button.png|link=CZ:Workgroups#Social_Sciences|width=30px|height=30px}} ||align="left"|'''[[CZ:Workgroups#Social_Sciences|Social Sciences]]'''&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
** [[CZ:Quick Start|Quick Start]]&nbsp;|&nbsp;[[CZ:How to collaborate|How to collaborate]]&nbsp;|&nbsp;[[CZ:How To|How to format pages]]
|{{click|image=Humanities button.png|link=CZ:Workgroups#Humanities|width=30px|height=30px}} ||align="left"|'''[[CZ:Workgroups#Humanities|Humanities]]'''
* Read our policies on [[CZ:Content_Policy|content]], [[CZ:Objectivity Guidance|objectivity]], and [[CZ:Policy_on_Self-Promotion|no self-promotion or PR]].
|-
* For [[CZ:Introduction_to_CZ_for_Wikipedians|Wikipedians]]
|{{click|image=Arts button.png|link=CZ:Workgroups#Arts|width=30px|height=30px}} ||align="left"|'''[[CZ:Workgroups#Arts|Arts]]'''&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
* Browse articles by Workgroup:
|{{click|image=Applied arts button.png|link=CZ:Workgroups#Applied Arts and Sciences|width=30px|height=30px}}
<small><b>
|align="left"|'''[[CZ:Workgroups#Applied Arts and Sciences|Applied Arts and <br>Sciences]]'''&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
{|style="width:90%; border: solid 1px #f0e6ed; background: #fff5d1; margin: 0 0 0 0; padding: 1px;"
|{{click|image=Recreation button.png|link=CZ:Workgroups#Recreation|width=30px|height=30px}}
|-
|align="left"| '''[[CZ:Workgroups#Recreation|Recreation]]'''
| [[:Category:Agriculture Workgroup|Agriculture]]
| [[:Category:Earth Sciences Workgroup|Earth Sciences]]
| [[:Category:Journalism Workgroup|Journalism]]
| [[:Category:Physics Workgroup|Physics]]
|-
| [[:Category:Anthropology Workgroup|Anthropology]]
| [[:Category:Economics Workgroup|Economics]]
| [[:Category:Law Workgroup|Law]]
| [[:Category:Politics Workgroup|Politics]]
|-
| [[:Category:Archaeology Workgroup|Archaeology]]
| [[:Category:Education Workgroup|Education]]  
| [[:Category:Library and Information Science Workgroup|Library & Info. Sci.]]
| [[:Category:Psychology Workgroup|Psychology]]
|-
| [[:Category:Architecture Workgroup|Architecture]]
| [[:Category:Engineering Workgroup|Engineering]]
| [[:Category:Linguistics Workgroup|Linguistics]]
| [[:Category:Religion Workgroup|Religion]]
|-
| [[:Category:Astronomy Workgroup|Astronomy]]
| [[:Category:Food Science Workgroup|Food Science]] 
| [[:Category:Literature Workgroup|Literature]]
| [[:Category:Robotics Workgroup|Robotics]]
|-  
| [[:Category:Biology Workgroup|Biology]]
| [[:Category:Games Workgroup|Games]]
| [[:Category:Mathematics Workgroup|Mathematics]]
| [[:Category:Sociology Workgroup|Sociology]]
|-
| [[:Category:Business Workgroup|Business]]
| [[:Category:Geography Workgroup|Geography]]
| [[:Category:Media Workgroup|Media]]
| [[:Category:Sports Workgroup|Sports]]
|-
| [[:Category:Chemistry Workgroup|Chemistry]]
| [[:Category:Health Sciences Workgroup|Health Sciences]]
| [[:Category:Military Workgroup|Military]]
| [[:Category:Theater Workgroup|Theater]]
|-
| [[:Category:Classics Workgroup|Classics]]
| [[:Category:History Workgroup|History]] 
| [[:Category:Music Workgroup|Music]]
| [[:Category:Topic Informant Workgroup|Topic Informant]]
|-
| [[:Category:Computers Workgroup|Computers]]
| [[:Category:Hobbies Workgroup|Hobbies]]
| [[:Category:Philosophy Workgroup|Philosophy]]
| [[:Category:Visual Arts Workgroup|Visual Arts]]
|}
</b></small>
<br>
{| align=center style="width:90%; background-color: #80FF80; border: solid 3px #40FF40; padding: 2px;" 
|- align=center
|style="background-color:#40FF40;"|'''<span>Please help today!</span>'''
|-align=center
|'''<big>Please [[CZ:Donate|make your donations here]].</big>'''<br/>Donations go to keep our servers running. See our [[CZ:Financial report|financial report]].
|}
|}
|- style="width:50%; border: solid 1px #ffffff; margin: 0 0 0 0; padding: 2px; background:"|
|
<!--| style="width:50%; border: solid 3px #CCCC66; colspan = 4; margin: 0 0 0 0; padding: 6px;" colspan=2 |
== Write-a-Thon! ==
[[Image:Writeathon.png|left]] Today--Wednesday, October 3--we invite all Citizens to come to the wiki, start a new article, and edit somebody else's new article.  It's a '''[[CZ:Monthly Write-a-Thon|Write-a-Thon]]'''!  It's a wiki-whoopie, a cyber-social, a collaborative kegger! -->
|
|- style="width:50%; border: solid 1px #e9e9e9; margin: 0 0 0 0; padding: 6px; background:#fafafa"|
|colspan = 2; valign=top|


----
<blockquote>
Press release:<br>
 
'''<div style="font-size:14pt;">[[CZ:Citizendium_Press_Releases/Oct302007|''Citizendium'' Wiki Celebrates One Year Online]]</div>'''
 
'''New Knowledge Society Takes Root, Flourishes'''<br>
 
----
 
Progress report:<br>
 
'''<span class=plainlinks>[http://www.citizendium.org/oneyearandthriving.html The ''Citizendium'' one year on: a strong start and an amazing future]</span>'''
 
----
 
 
 
 
</blockquote>
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 


===Welcome!===
We are an encyclopedia project, and more.


We are a [[CZ:We aren't Wikipedia|different]] sort of Web 2.0 project:
* We aim at credibility and quality, not just quantity.
* Both the general public and credentialed experts are encouraged to get involved.
* We use our real names, not pseudonyms.
* We're collegial.


We have added [[:Category:CZ Live|over 3,300 articles]] (and many [[:Category:Subpages|subpages]]) since November 2006.


==== [[Special:RequestAccount|Join us!]] ====
* New [[CZ:Author|authors]] and [[CZ:Editor|editors]] welcome!
* A human being will respond usually within a few hours.


==== Learn about us ====
* For readers: [[CZ:About|About the ''Citizendium'']]
* For authors: [[CZ:The Author Role|The Author Role]]
* For editors: [[CZ:The Editor Role|The Editor Role]]


==== Initiatives ====
* [[CZ:Core Articles|Core Articles]] - tackle high priority topics
* [[CZ:Recruitment|Recruitment]] - help invite others to join
* [[CZ:Subpages|Subpages]] - add other ''types'' of info to CZ
* [[CZ:Eduzendium|Eduzendium]] - students write CZ articles for credit


==== Support us ====
* We're a 501(c)(3) non-profit, and [[CZ:Donate|we need your support]].
* If you shop at <font color="097000">[http://www.amazon.com/gp/search?ie=UTF8&tag=citizendiumor-20&index=books&linkCode=ur2&camp=1789&creative=9325 Amazon.com]</font> ''or'' [http://www.barnesandnoble.com?lkid=J15314471&pubid=K123040&byo=1 Barnes &#38; Noble],<font color="000000"> do so through our links!</font><font color="660000">  We'll get donations at ''no cost to you''.</font> [[CZ:Donate#Buy_books_and_other_stuff_.28affiliate_programs.29|(read more)]] - [http://www.amazon.com/gp/search?ie=UTF8&tag=citizendiumor-20&index=blended&linkCode=ur2&camp=1789&creative=9325 Search All Products].


|style="width:50%; border: solid 1px #e9e9e9; margin: 0 0 0 0; padding: 6px; background:#fafafa" colspan=2 valign=top|


=== Some of our finest <font size=1>[ [[CZ:Approval Process|about]] ]</font> ===
[[Image:Approved.png|35px|35px|right]]
* [[:Category:Approved Articles|Approved Articles]]
* [[:Category:Developed Articles|Developed Articles]] <font size=1>(over 600)</font>
<!-- * [[CZ:Approval_Announcements|Newly approved and newly nominated articles]] -->


=== Article of the Week <font size=1>[ [[CZ:Article of the Week|about]] ]</font> ===
[[Image:Prime rectangles.png|200px|right]]
A '''[[prime number]]''' is a number that can be evenly divided by exactly two positive [[integer|whole numbers]], namely 1 and itself. The first few prime numbers are 2, 3, 5, 7, 11, 13, and 17. A prime number <math>p</math> cannot be factored as the [[multiplication|product]] of two numbers <math>\scriptstyle p=a\times b,</math> except for the trivial factorizations <math>\scriptstyle p = 1\times p = p\times 1</math> that all numbers possess.


With the exception of 2, all prime numbers are odd numbers, but not every odd number is prime. For example, <math>\scriptstyle 9 = 3\times 3</math> and <math>\scriptstyle 15 = 3\times 5,</math> so neither 9 nor 15 is prime. By the strict mathematical definition, the number 1 is not considered to be prime (although this is a matter of definition, and mathematicians in the past often did consider 1 to be a prime). <font size=1>[[Prime number|['''more...''']]]</font>


=== New Draft of the Week <font size=1>[ [[CZ:New Draft of the Week|about]] ]</font> ===
|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;"|
[[Image:Red-sea-urchin.gif|150px|right]]
{|cellspacing=0 style="width:100%; padding:0; margin:0; background:transparent;"
The '''[[Red Sea Urchin]]''', ''Strongylocentrotus franciscanus'' (A. Agassiz, 1863), is a species of marine invertebrate belonging to the phylum [[Echinodermata]] or "spiny-skinned" animals.  Typically found in the Pacific ocean from Alaska to Baja California, red urchins inhabit shallow waters from the low-tide line to depths of 100 m. In general, this species prefers wave-sheltered rocky shorelines. <font size=1>[[Red Sea Urchin|['''more...''']]]</font>
|-
|valign=top style="padding:1em 1em 0.75em;"|
<h4 style="margin:0 0 0.75em; padding:0;"> '''Article counts''' </h4>
<p style="line-height:15px; padding-left:20px;">
[[:Category:Citable versions of articles|Citable]] <font size=1>('''{{PAGESINCAT:Citable versions of articles}}''')</font><br />
[[:Category:Developed Articles|Developed]] <font size=1>('''{{PAGESINCAT:Developed Articles}}''')</font><br />
[[:Category:Developing Articles|Developing]] <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]])</small>
</p>
----
ONGOING CLEANUP:<br>
<p style="line-height:15px; padding-left:2px;">
[[:Category:External_Articles|Ext]] <font size=1>('''{{PAGESINCAT:External_Articles}}''')</font>&nbsp;|&nbsp;
[[:Category:Pages with reference errors|Refs]] <font size=1>('''{{PAGESINCAT:Pages with reference errors}}''')</font><br>
[[:Category:Lemma Article|Definition only]] <font size=1>('''{{PAGESINCAT:Lemma Article}}''')</font><br />
</p>
|style="vertical-align:top; overflow:hidden; padding:0 0 1em;"|
{{CZ:Quote}}
{{-}}
|-
|valign=top style="padding:0 1em 0.5em;" colspan=2|
----<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>
{{Getting Started|nocat=y}}

Latest revision as of 14:54, 4 September 2024

New Blog Post
Why is Citizendium deleting articles?


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.





















Article counts

Citable (145)
Developed (1,128)
Developing (7,431)
Stubs (7,700)
(16,527 total)

ONGOING CLEANUP:

Ext (262) |  Refs (131)
Definition only (3,897)

The most exciting phrase to hear in science, the one that heralds new discoveries, is not “Eureka!” (I found it!) but “That’s funny …”
— Anonymous, attributed to Isaac Asimov
       —add a quotation about knowledge or writing

Featured Article: Nuclear power reconsidered

After decades of failure to slow the rising global consumption of coal, oil and gas,[1] many countries have proceeded as of 2024 to reconsider nuclear power in order to lower the demand for fossil fuels.[2] Wind and solar power alone, without large-scale storage for these intermittent sources, are unlikely to meet the world's needs for reliable energy.[3][4][5] See Figures 1 and 2 on the magnitude of the world energy challenge.

Nuclear power plants that use nuclear reactors to create electricity could provide the abundant, zero-carbon, dispatchable[6] energy needed for a low-carbon future, but not by simply building more of what we already have. New innovative designs for nuclear reactors are needed to avoid the problems of the past.

(CC) Image: Geoff Russell
Fig.1 Electricity consumption may soon double, mostly from coal-fired power plants in the developing world.[7]

Issues Confronting the Nuclear Industry

New reactor designers have sought to address issues that have prevented the acceptance of nuclear power, including safety, waste management, weapons proliferation, and cost. This article will summarize the questions that have been raised and the criteria that have been established for evaluating these designs. Answers to these questions will be provided by the designers of these reactors in the articles on their designs. Further debate will be provided in the Discussion and the Debate Guide pages of those articles.

Footnotes

  1. ↑ Global Energy Growth by Our World In Data
  2. ↑ Public figures who have reconsidered their stance on nuclear power are listed on the External Links tab of this article.
  3. ↑ Pumped storage is currently the most economical way to store electricity, but it requires a large reservoir on a nearby hill or in an abandoned mine. Li-ion battery systems at $500 per KWh are not practical for utility-scale storage. See Energy Storage for a summary of other alternatives.
  4. ↑ Utilities that include wind and solar power in their grid must have non-intermittent generating capacity (typically fossil fuels) to handle maximum demand for several days. They can save on fuel, but the cost of the plant is the same with or without intermittent sources.
  5. ↑ Mark Jacobson believes that long-distance transmission lines can provide an alternative to costly storage. See the bibliography for more on this proposal and the critique by Christopher Clack.
  6. ↑ "Load following" is the term used by utilities, and is important when there is a lot of wind and solar on the grid. Some reactors are not able to do this.
  7. ↑ Fig.1.3 in Devanney "Why Nuclear Power has been a Flop"

Retrieved from "https://citizendium.org/wiki/index.php?title=Welcome_to_Citizendium&oldid=976941"