Tagged Questions
1
vote
0answers
58 views
Total positive charge in the Universe
In their last homework, some of my students miscalculated a charge to be $10^{20}$ C over a squared meter and I was wondering if there was as much positive charges in the entire Universe. It would do ...
2
votes
2answers
65 views
Empirical bound on sum of electron and proton charge
Followup to "Why do electron and proton have the same but opposite electric charge?".
It is argued that even a tiny residual charge would result in huge amounts of electricity in bulk matter, ...
1
vote
3answers
202 views
What does a subatomic charge actually mean?
I was recently reading a popular science book called The Canon - The Beautiful Basics of Science by Natalie Angier, and it talks about subatomic particles like protons, neutrons and electrons in ...
1
vote
1answer
302 views
Why is it that protons and electrons have exactly the same but opposite charge? [duplicate]
Possible Duplicate:
Why do electron and proton have the same but opposite electric charge?
Doesn't it seem very curious that one is an elementary particle and the other a subatomic particle ...
10
votes
4answers
2k views
Why do electron and proton have the same but opposite electric charge?
What is the explanation between equality of proton and electron charges (up to a sign)? This is connected to the gauge invariance and renormalization of charge is connected to the renormalization of ...
