You are here

Van de Graaf PP

Submitted by zalam on Sat, 10/05/2019 - 15:10

An elaborate representation of static electricity can be demonstrated through the use of a Van de Graaf. Structurally, a Van de Graaf has a base with a dial to turn it on and increase/decrease the voltage. It is plugged to a power outlet through the base. Emerging from the base, the plastic cylinder has a belt (made of felt) constantly rubbing against one another when the equipment is switched on. This causes a sea of negatively charged electrons to be produced. The electrons travel up the belt to the metal ball of the Van de Graaf (on top). Upon skin contact with the metal ball, the person will experience their hair being "static". This is due to the fact that electrons cannot stay in one place and are always looking to leave through any form conducting medium. The person has to stand on an insulating material (e.g. wooden or plastic stool) to avoid the electrons travelling down to the ground since that pathway is natural for them. This is the same mechanism as the simple "socks shuffling against the rug" or "balloon rubbing against hair". 



This paragraph is very informative and shows use of the exposition form of organization in scientific writing. 

Maybe define what a Van de Graaf is and why someone would want to test this in the first part of the paragraph? Unless of course it is already defined earlier in the paper.

Maybe explain specifically what 'hair being "static"' means. This way you get more content in your writing and explain static electricity in more detail.