The Two Kinds of Electrical Charges

The Discovery of Electrical charge was dated back ages long ago particularly during the time of the ancient Greek period. 

According to the scientists, Thales was the first individual who has discovered “Electrical Charge” by taking a piece of amber then rubbing it on a silk cloth. As a result, the amber was attracted to the small pieces of straws.

Another simple experiment that you can perform on your own is when you try to comb your hair. Take note that this experiment only works when the weather condition is dry and not humid.

What you need to be able to perform this experiment is a plastic comb and small pieces of paper. Are you ready?

If you are then try combing your hair gently for about 10 to 20 seconds. When you are done, quickly hold your comb near the small pieces of paper that you have prepared. 

You will notice that the small pieces of paper are attracted to the comb like how a magnet attracts metals.


Again, comb you hair a couple of times to make it electrically charge. Now bring your comb near your hair and you will notice that your hair stands being pulled towards the direction of your comb.


To explain such occurrences, it is caused by an invisible force known as Electrical Charge. Like batteries, it consists of positive and negative characteristics

In theory, it is believed that any objects that gains electrons are negatively charged while objects that losses electrons are positively charged.

Going back with our experiment, the rubbing process between your comb and your hair makes them positive charged. 

Your comb gains extra electrons which makes it negatively charge. Your hair losses some electrons on the process making it positively charge. 

This explains the reason why your hair is being attracted to your comb and not caused by some unknown entity that lurks around the corner of your room.

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