5 ms·
We know: http://en.wikipedia.org/wiki/Electric_field http://en.wikipedia.org/wiki/Electric_field http://en.wikipedia.org/wiki/Electric_charge http://en.wikipe
by readerrrr 12y ago
We know:
http://en.wikipedia.org/wiki/Electric_field http://en.wikipedia.org/wiki/Electric_field
http://en.wikipedia.org/wiki/Electric_charge http://en.wikipedia.org/wiki/Electric_charge
http://en.wikipedia.org/wiki/Quantum_electrodynamics http://en.wikipedia.org/wiki/Quantum_electrodynamics
An electric field is generated by electric charge and time-varying magnetic fields
Charge is the fundamental property of forms of matter that exhibit electrostatic attraction or repulsion in the presence of other matter. Electric charge is a characteristic property of many subatomic particles.
- danbruc 12y agoNitpicking again - the fields are a working mathematical description but, as far as I know, we don't know if or in what sense they are real things, whatever real thing even means. The electrical and magnetic fields change when you switch reference frames, so that does not sound like something that really exists independent of an observer. The vector potential on the other hand does not change but it does not seem real either because it has gauge symmetry.
- snarfy 12y agoWe know that the A field is more fundamental (at least Feynman thought so): http://en.wikipedia.org/wiki/Aharonov%E2%80%93Bohm_effect http://en.wikipedia.org/wiki/Aharonov%E2%80%93Bohm_effect
- deleted 12y ago[deleted]