Category talk:Physics

message: Read Help:Category#Subcategories, where there is a clear 
description on how to add subcategories to an existing category.
Here is another example related to the 
Physics category.
On Sun, 9 Dec 2007, there was no Statistical Mechanics subcategory in 
the
Physics category.
Now, 
Statistical Mechanics
was already a category by itself.  To add the
Statistical Mechanics category
as a subcategory to the 
Physics category, point your browser to the
Statistical Mechanics category,
edit this page, add the following line
:Category:Physics
at the end of the
Statistical Mechanics category
page, but above the interwiki links, and then save the page.
Voila`.
You could now go back to the 
Physics category
page, to check that
Statistical Mechanics
was now listed as a subcategory to the
Physics category.
The above was an example for an existing category page, such as the
Statistical Mechanics category
page.  If a category page did not exist yet, you need to first create 
this new category page, before making it a subcategory to the physics 
category.  To create a new category page for a new article that you 
wrote, you just need to add at the end of your article the line
:Category:New_category
where "New_category" is the appropriate name for the new category,
save the article, and click to go to the new category page to
create it.
Read 
Help:Category#Creating_a_category_page
for more details on how to create a new category page.
After the new-category page had been created, repeat the steps
described further above to make the now-existing new-category page
a subcategory to the 
Physics category.
(The category software currently allocates 200 links per category page, whether they are subcategory or article links.)
Vql (talk) 16:09, 10 December 2007 (UTC)
thread_title: How to assign physics subcategories to the physics category

message: 
There are too many articles in this category.  They need to be sorted into subcategories so that they are arranged by topic, not by alphabet.  (If you don't already know the name of the article you're looking for, and you don't already know what each article is about, it can be really hard to find things on a very long alphabetical list like this.) -- Beland 23:19, 30 Mar 2005 (UTC)
thread_title: Cleanup still needed

message: OK, I think I just whacked about 150 articles or so. I'm getting sleepy, time to go to bed, can someone review the remaining 70 or so, and see if they can prune another 20-40 away? Please leave a core of 10-40 articles covering general topics. linas 09:18, 1 May 2005 (UTC)
thread_title: Cleanup almost done

message: I utterly disagree with the given definition of physics.
Energy does not interact with matter but particles, people, animals interact with each other.  It is a bit like saying pears interact with apples.
When energy interacts with a bicycle, does this mean that the bicycle is beginning to move?  No. When a person interacts with a bicycle (pushs the pedals) the bicycle begins to move.  Energy is an abstract concept that does not interact with anything!
I would switch to the etymological definition :
:Physics is the science of nature
but I would add
:In practice, Physics is the science performed within the scientific method as applied by the physics community and defined by the works of physicists like Gallilei, Descartes, Planck, Einstein, Dirac or Feynman.
because I believe a science is not only defined by its object but also by its methods and the community of people doing it. 
Alike we could have
:Chemistry is the science of chemical compounds
and
:In practice, Chemistry is the science performed within the scientific method as applied by the chemistry community and defined by the works of chemists like Lavoisier, Proust, Dalton, Gay-Lussac, etc...
And
:Biology is the science of life
and
:In practice, Biology is the science performed within the scientific method as applied by the biology community and defined by the works of chemists like Pasteur, etc...
The definition I propose allows the subsequent defintion of Physical Biology, Biophysics, Physical Chemistry, Chemical Physics, Physical Biochemistry and so on.  For example Physical Chemistry is the science of chemical compounds performed with the methods of Physics in the Chemistry community and Chemical Physics is the science of chemical compounds performed in the Physics Community (have a look at the journal Journal of Chemical Physics and Journal of Physical Chemistry to understand this subtle nuance).
Of course I understand not everybody agree with that.  I let this topic open for discussion.  And if nobody disagree or if a concensus is found I shall change the definition of physics accordingly.
: I think you're trying to change the wrong page, because this intro is to a category and shouldn't really be too elaborate. I think no one has changed it since like a year, becuase it jsut isn't important, so I reduced it to a minimum. A complete definition and anything else about physics should be found simply in the article about physics. Cheers. Karol 12:07, July 14, 2005 (UTC)
:I agree to the given definition. --Meno25 02:25, 23 November 2006 (UTC)
thread_title:  Definition of Physics