Talk:Charge conservation

message: I think there's some mistake in the Mathmatics derivation section.
the "dq" in the I=\frac{dq}{dt} means charge over the bound of the V in the period "dt".So We can't just think q means the charge remains in the V,otherwise we make a mistake that we think charge like ping-pongs and the total amount remains the same.That is just what we want to prove.
Yes,we can use this derivation to prove the last equation is correct,but we don't prove the law because we just use the law in our derivation!Through the derivation we just know the last equation is one of the expressions of the natural law.
In the derivation we don't use any Physics knowledge except for some definitions.
Maybe we'd better write something else(not that misunderstanding)in this section.For example,use Maxwell's equations to "prove" the law.  —Preceding unsigned comment added by 222.29.46.239 (talk) 08:52, 7 March 2010 (UTC)
thread_title: something wrong

message: If no one objects I would like to add a simpler explanation of charge conservation, in the introduction, for the general reader. Ti-30X (talk) 00:27, 21 May 2009 (UTC)
thread_title:  Simpler explanation 

message: Just wanted to congratulate David C Bailey on his great additions to the article.  The excellent Franklin quote, the desperately needed section on experimental evidence, and especially the supporting citations.  Its a much-improved article now.  Cheers!  --ChetvornoTALK 09:09, 25 November 2010 (UTC)
thread_title:  Great additions 

message: Substituted at 11:16, 29 April 2016 (UTC)
thread_title: Assessment comment

message: The article says:
:Simple arguments rule out some types of charge nonconservation. For example, the magnitude of the elementary charge on positive and negative particles must be exactly equal. Ordinary matter contains equal numbers of positive and negative particles, protons and electrons, in enormous quantities. If the elementary charge on the electron and proton were even slightly different, all matter would have a large electric charge and would be mutually repulsive.
I don't think it's any useful in science to make such absolute statements. Suppose, hypothetically speaking, that there was a 10^-100 e difference between electron and proton charge. Then, this would amount to less than one extra elementary charge in the whole of observable universe, and such a discrepancy would obviously not be observable. It's more accurate that both direct experiments and the fact that macroscopic objects and celestial bodies don't have a significant electric charge give a very strict limit on this difference. (According to particle data group, the upper limit on the difference between electron and positron charge is on the order of 10^-8 e, between proton and antiproton 10^-10 e, between proton and electron about 10^-21 e, and likewise for the upper limit on neutron charge.  ) - Mike Rosoft (talk) 07:33, 26 March 2017 (UTC)
replies: text: I agree.  Added tolerance to statement. --ChetvornoTALK 08:51, 26 March 2017 (UTC)
replies: text:  When I said "the fact that macroscopic objects and celestial bodies don't have a significant electric charge", I should have also added the fact that they are stable in the first place. (For an extreme example, see the thought experiment: What if your body somehow lost 1% of its electrons?  To put it simply, it would have had a rather disastrous effect on both you and the Earth itself.) In any case, the claim that there's a 10^-100 e difference between electron and proton charge is an obvious example of Russell's teapot. It can't really be disproven, but there's no reason to believe it's true, and the theory says that the charge is exactly the same (just with an opposite sign). - Mike Rosoft (talk) 11:10, 26 March 2017 (UTC)
thread_title: Absolute statements

message: - The previous version (from 3 Aug 2017) started with a false statement -- about charge not being created and destroyed, which was contradicted later in the text. Have changed the opening sentence -- which also aligns better with the discussion of charge conversation in the Electric Charge#Conservation_of_electric_charge article.
- Tried to reorganise/restructure the introduction so that common topics were brought together, which were separated in different parts. 
- created a separate history section and moved relevant text there
- moved formal mathematical part in the introduction into the mathematical section
Sdc870 (talk) 00:46, 31 March 2018 (UTC)
thread_title: Reorganized introduction