Audio Engineering

Conductor and Insulator (1)

The Music Telegraph | Text 2019/01/02 [16:33]
Audio Engineering

Conductor and Insulator (1)

The Music Telegraph| 입력 : 2019/01/02 [16:33]

▲ Conductor and Insulator

© Science ABC

 



Layers of electrons are shells

 

▲ Copper (29): Maximum 32 electrons capacity



Elements with free electrons:

- If outer shell has less than 1/2 its maximum number of electrons,

then called ‘Conductor’ (Compounds use outer electrons to keep the elements together)

 

 

Elements that bound electrons:

If outer shell has more than 1/2 its maximum number of electrons are called 'Insulators' (Outer electrons spin around each other to form) 

 

▲ Insulators



 

Law of Electrostatics:

- Same charge each other (e.g. +, +) ==> Repel

- Opposite charge each other (e.g. -, +) ==> Attract

 

 

 

 

[side trip]

*dB (Sound Pressure Level)

140 dB -> Hurt

ex) Subway -> 90 dB

Use Earplugs to protect your ears!* 

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