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Electronics/Physics_of_electricity/Electromagnetism.md
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@ -36,6 +36,8 @@ As they spin they produce a **magnetic dipole**: the two poles noted above. We c
In most materials, equal numbers of electrons spin in opposite directions. As a result, their magentic effects are cancelled out. However **in strongly magnetic materials an overall majority of electrons spin in one particular direction**. This breaks the equilibrium and produces the magnetic field. In most materials, equal numbers of electrons spin in opposite directions. As a result, their magentic effects are cancelled out. However **in strongly magnetic materials an overall majority of electrons spin in one particular direction**. This breaks the equilibrium and produces the magnetic field.
If you have material A where the electrons all spin in one direction and material B where the electrons all spin in a direction opposite to A, then B will be attracted to A and you can observe the effects of the magnetic force in action.
## Electromagnetic field ## Electromagnetic field
### What is a field ### What is a field

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Electronics/Physics_of_electricity/Electrons.md
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@ -14,7 +14,7 @@ Each shell can accomodate a maximum number of electrons. The shells are designat
_The diagram below demonstrates shell naming conventions and the maximum number of electrons per shell._ _The diagram below demonstrates shell naming conventions and the maximum number of electrons per shell._
![](/img/electron-shells.svg.svg) ![](/img/valence-shell.svg)
## Valence ## Valence
@ -31,6 +31,7 @@ Electrons in the valence shell can gain energy from external forces. If these el
We call materials that contain a large number of free electrons **conductors**. In contrast **insulators** are atoms that stabilize themselves by absorbing valence electrons from other atoms to fill their valence shells, eliminating the free electrons. We call materials that contain a large number of free electrons **conductors**. In contrast **insulators** are atoms that stabilize themselves by absorbing valence electrons from other atoms to fill their valence shells, eliminating the free electrons.
### Semiconductors ### Semiconductors
Semiconductive materials are midway between conductors and insulators: they are neither good conductors or insulators but can be altered to function in the manner of either. Semiconductive materials are midway between conductors and insulators: they are neither good conductors or insulators but can be altered to function in the manner of either.
## Ionization ## Ionization