User talk:Delaszk

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Hello, Delaszk! Welcome to Wikipedia! Thank you for your contributions. You may benefit from following some of the links below, which will help you get the most out of Wikipedia. If you have any questions you can ask me on my talk page, or place {{helpme}} on your talk page and ask your question there. Please remember to sign your name on talk pages by clicking or by typing four tildes "~~~~"; this will automatically produce your name and the date. If you are already loving Wikipedia you might want to consider being "adopted" by a more experienced editor or joining a WikiProject to collaborate with others in creating and improving articles of your interest. Click here for a directory of all the WikiProjects. Finally, please do your best to always fill in the edit summary field. Happy editing! WLU (talk) 19:31, 11 June 2008 (UTC) Getting Started Wikipedia Tutorial • The five pillars of Wikipedia How to: edit a page • upload an image Getting Help Frequently Asked Questions Where to ask questions or make comments Request administrator attention Policies and Guidelines Neutral point of view • Reliable sources Verifiability • Citing sources • No original research What Wikipedia is not • Biographies of living persons Manual of Style • Three-revert rule • Sock puppetry Copyrights • Policy for non-free content • Image use policy External links • Spam • Vandalism Deletion policy • Conflict of interest • Notability The Community Community Portal • Adopt-a-user program Assume good faith • Civility • Etiquette No personal attacks • Resolving disputes Build consensus • Village pump Signpost • IRC channels • Mailing lists Things to do Be bold in editing • Help develop an article Pages needing attention • Peer review Join a WikiProject • Translating articles Cleaning up: General • Spam • Vandalism Miscellaneous Categories • Disambiguity • Stubs User pages • Talk pages Useful templates • Tools • User scripts

[edit] Uranus and Neptune

You attempts to impove these articles are much appreciated. However I want to make several observations:

1) The language of a Featured article must be brilliant and of a professional standard. See Wikipedia:Featured_article_criteria 1(a). When you write "20% of the radius is composed of hydrogen and helium" you violate it, because radius can not be composed of anything—it is only a distance between the center and surface.

2) When you add a reference to article, make sure that its style is the same as the style of other refs in the article (see 2(c)of FA Criteria). In the Uranus and Neptune articles author's first names are written after their family name. In your ref they are written in reverse order.

3) You are supposed to provide accurate information about the source. In the case of "Encyclopedia of the Solar System" you should have used a different template (cite encyclopedia), because this book is a compilation where each chapter is written by different scientists. Lucy-Ann McFadden and others are only editors.

4) The lead of the article is a summary of the article (see 2(a) of FA Criteria). It should not be crammed with accessive details like "the outer 20% of the radius".

5) I also want to say that those numbers are not so certain as you obviously think. The outer gaseous envelop can be as thick as 30% of the radius of the planet (Uranus and Neptune) or as thin as 15%. The known gravitational moments don't put sufficiantly strong constrains on interior models to isolate unique one (see Podolak et al, 1995, 2000 in the Uranus article). The outer envelop may be or may not be separated from the mantle by a density discontinuity, it is simply not known with certanty. This is the main reason, why the section about interior structure of Uranus is written much more cautiously. Interior is also composed not only from ice but includes rocks too.

6) What is known with reasonable certanty is the composition of atmospheres. THis was main reason for them mentioned in the lead.

Ruslik (talk) 15:06, 12 June 2008 (UTC)