separation of the charges

You need "electricity 101"

Good place to start:

http://en.wikipedia.org/wiki/Electricity

Its too easy ! every one can do it !

Friction!

fur, glass, hair, clothes etc. and

induct with anither object to get opposition polarity charges.

As CN says friction does it rather well the Van der Graaff generator does this.

Click the link to see wikpedia entry with good illustration.

Del

Hi, Guest!

You have come to the right place to ask your question. This is the education section, and it was specifically set up for people to ask questions that they have not been taught the answers for yet. This is the '101' class for everything that is asked in here.

Yes, there is a way to separate the positive and negative charges and even store them before using them. It is not exactly true to say that combining positive and negative charges makes them neutral. When combining the two, they must be used for a purpose. Neutral indicates that no charge is present.

We use a tool called a capacitor to separate these two varieties of charge. A capacitor is a barrel containing some material that will hold the charges. It allows us to use the charges at some future time when it will be needed.

Between the material holding the positive charge and the material holding the negative charge inside the barrel is a third material that separates the two. This is the material that you were asking about. It is called a 'dialectric'.

Unfortunately, a fully charged capacitor can be dangerous to handle, since an inexperienced person can touch the positive and negative terminals on it at the same time and discharge its energy through their bodies. This can be fatal.

Using Google to navigate the web, type in 'dialectric' as one of your key words to obtain more information on the subject.

Mark