Im not sure if this s the right category but

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In summary, the conversation discusses the concept of positive and negative charges in atoms and the properties of quarks that make them positive. It is mentioned that the definition of positive and negative charges is arbitrary and can be assigned to different particles without changing the laws of physics. The conversation also touches on the question of what attracts negative to positive and how something can have half a charge, with the explanation that these are matters of definition and cannot be answered by physics.
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AlexxAttacks
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okk I am sorry if I am in the wrong category but i didnt really know where to post this question.
Ok so what makes positive... positive? I know that atoms are made of nutrons, protons and electrons, and protons are made of up and down quarks which have a positive charge of 2/3 and a negative charge of -1/3... so what makes that quark have a positive property? what is it that attracts negative to positive? how can something only have half a charge? I am sorry if this is something really basic I've just been wondering this a while now and i can't find it anywhere!
 
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  • #2
so what makes that quark have a positive property?
That is unknown. The laws of physics just describe the experimental results.
If you just care about positive<->negative: The definition is arbitrary, we could assign "negative" values to up-quarks and "positive" values to electronsm, without changing physics. You could even name them "good charge" and "bad charge", or whatever.
what is it that attracts negative to positive?
Quantum field theory can describe it, but physics cannot answer "why" questions.
how can something only have half a charge?
That is just a matter of definition. You could assign -1 charge to down-quarks, +2 charge to up-quarks and -3 charge to electrons. You would have to change the prefactors of some constants, but physics would stay the same.
 

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