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Labyrinth
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How does the exchange of photons/virtual photons give rise to the electrostatic or electromagnetic force?
Why do like charges repel and opposite charges attract?
Why do like charges repel and opposite charges attract?
Labyrinth said:How does the exchange of photons/virtual photons give rise to the electrostatic or electromagnetic force?
Why do like charges repel and opposite charges attract?
Labyrinth said:I was under the impression that this was caused by photon exchanges, which become much more likely to occur the closer the two atoms become.
What is it about the electron that makes it inherently negative? The positron inherently positive? When two "particles" attract this is also caused by an exchange of photons only an opposite type of emitting/absorbing is happening right? Why do positively "charged" particles behave a certain way towards negatively "charged" particles and vice versa?
Is the "negativity" or "positivity" simply an amplitude for certain types of couplings or is there a greater understanding of the cause known?
Someone? How about you, maybe you could tell everyone your opinion of where the politics of the current model of charge should lie (since we're discussing politics, that is). Negative and positive viewpoints please, in no more than a sentence or two.Can someone have a go at getting to the root of positive and negative charges
in one sentence
wawens said:Can someone have a go at getting to the root of positive and negative charges
in one sentence (we all know they are electrostatic thjings that cause attraction and/or repulsion)?
Phred101.2 said:And again about charge being negative: this doesn't mean that it's something that gets subtracted, because of its sign, or anything. Like bits on a magnetic tape, it has to be something: you can't store a message using non-existent bits, or non-photons, you have to decide what feature to use --which is always a real physical variable like polarisation say), the key is to use the different states. Negative and positive charge are different versions of the same thing. but they're opposite in direction, is all. You can bring opposite charges together, and they cancel each other (at least at the classical level), but they don't disappear, or annihilate each other. If they get separated, charge becomes apparent (to us) again.
Labyrinth said:TWhich was saying that 1/137 was found by q^2/(h)(c). I'm wondering if this is correct though, because it seems like no matter what I put in there I cannot get 1/137. Can someone show me how this is properly calculated?
This number is the amplitude for an electron to emit or absorb a photon correct?
No, my intention was to say that negatively charged electrons don't lose their charge when they encounter a proton.So the choice of charge representation as "positive" and "negative" is not as arbitrary as it might first sound.
jtbell said:Electric charge is the conserved quantity associated (via Noether's Theorem) with the local U(1) gauge symmetry that the universe apparently has.
The exchange of photons refers to the transfer of virtual photons between two charged particles in order to create an electrostatic or electromagnetic force. These virtual photons are not actual physical particles, but are rather carriers of the electromagnetic force.
The exchange of photons between charged particles creates an attractive or repulsive force, depending on the charges of the particles. This force is known as the electrostatic force, which is responsible for the interaction between charged particles. In the case of moving charged particles, the exchange of photons also contributes to the electromagnetic force, which is responsible for the behavior of electric and magnetic fields.
No, the exchange of photons can only occur between charged particles. This is because photons are the carriers of the electromagnetic force, and neutral particles do not have a charge that can interact with this force.
The exchange of photons is different from the exchange of physical particles in that photons are virtual particles and do not have a physical presence. They are simply carriers of the electromagnetic force and do not have mass. On the other hand, the exchange of physical particles involves the transfer of actual particles with mass.
No, the exchange of photons cannot be observed or measured directly. As virtual particles, they do not have a physical presence and cannot be detected by traditional means. However, their effects can be observed through the behavior of charged particles and the resulting electrostatic and electromagnetic forces.