/sci/ - Science & Math

>>9560972
Pretty sure it's something along the lines of coulomb's law and the effect of paired / unpaired electrons.

Literally all to do with electron / electron repulsion and attraction

>>9560986
Oh, and spacetime isn't "bent" by gravity, gravity is the effect of the bend caused by mass

>>9560972
There is nothing physical about a field. For more detail look at some of Ken Wheeler's videos explaining magnetism. Incoming butt hurt replies.

>>9560972
A varying EM field can be envisioned either as photons or waves.
A static magnetic field (shown) isn't emitting anything.
Gravity IS bent spacetime. So nothing which isn't gravity bends spacetime.

Easiest way to see that is electromagnetism effects different objects in different ways. Iron is attracted. Lithium isn't. Spacetime curvature MUST effect everything equally. Otherwise, Equivalence Principle violated.

In modern physics, there isn't any such thing as magnetism. It's a relativistic effect of electric charge (speed-of-light lag, essentially).
Try Wikipedia or read a book on physics.

>>9560972
The idea of fields was appealing when the aether was considered. There is no need for aether anymore, so the use of fields vs. Source is one of convenience.

>>9560972
>Do electromagnetic fields have particles?
All of space "has particles." In our solar system where all our electromagnetic fields exist there is a lot of particles everywhere (including the ''void'' of space.)

>Do they bend spacetime like gravity?
Bent spacetime is a math construct. Think space = real, time = real, spacetime = not real. Also like to add that you cannot bend either space or time, only rulers and clocks.

>What is the actual physical feature that composes a magnetic field?
The field is an area of coherently spinning quanta, that is to say the local energy has a left spin at the north pole and a right spin at the south. It is the ambient field and also the emitted i/r field of the magnet. The rest is classical spin mechanics, just smaller. The like spins exert a force we call repulsion, opposite spins work together to create the force we call attraction. There really is no attraction at a distance, it's all real world subatomic particle interactions.

I hope this helps you OP.

>>9560988
Which is just a mathematical interpretation, it doesn't actually represent things physically.

>>9560972
>Do electromagnetic fields have particles?

Photons carry the electromagnetic force. They also carry the weak and strong forces. Other bosons carry other forces.