... metal polls going through the center of the cork and 4 half table tennis balls glued to the end of the two metal rods. I then attached the cork onto a motor, which I would use to measure the amount of volts produced by the cup anemometer. I used a hair dryer to produce the wind, which would turn the cup anemometer. I first tried this just in an open space, however I found that wind from outside the hair dryer was affecting my results and therefore they were not reliable. I had to design a wind tunnel that would stop any air from the room affecting my results so I built a small tunnel out of cardboard and put it over the end of the hair dryer so that the air would travel straight down the tube towards the cup anemometer. However I couldn't get the wind to blow ...

See this essay or coursework document in full right now