靜電同金屬既關係!!!

靜電係咪當個ATOM係負電CHARGE同埋正電CHARGE既時候先有??
Negative charges are due to presence of free electrons, i.e. a surplus of electrons. Positive charges are due to presence of positive ions, i.e. omission of electrons.
我老師話,WINTER個時行CARPET,我地就透過鞋吸收負電,之後去TOUCH車門(METAL) ,就觸電
It is because of friction that causes a movement of electrons from the carpet to your shoes.
You won't feel shock because the charges are static (immobile). They just stay at your shoes. This is because of this property that these charges are called "electrostatic charges".
When you happen to touch a metal, there is a potential difference between your hand (which is earthed, and hence at zero potential) and your shoes (which are negatively charged). As a result, charges flow from your shoes through your body to the metal (to earth). Thus you get a shock.

因為大地有負電,負電傳到金屬,再沒有地方一可以傳導,
故積聚在金屬到,靜電有一定既量就當我地touch metal時向我們放電,就好似觸電