- #1
tete02
- 2
- 0
my group was designing an experiment for class where we have to find a length of a column, we started with open, to match a frequency we wanted. we started out with straws, and extended straws, to using the straw as a reed and blowing into a pvc pipe. nothing has worked, our frequency arent what we expect when we use the v=(wavelength)(frequency). we assume that our reed isn't effective, we even tried a recorder mouthpiece, but even the slightest blowing change will mess up the whole frequency. we did get better results with the mouthpiece than the straw. so, is there any suggestions for a reed or a better experiment. we are getting desperate and tomorrow we are going to try an empty wine bottle and do measurements for a closed air column and blow air across instead and hope we get the results we want. we did try playing around with a long closed glass tube and putting a funnel on the open part and blowing across but we were getting high frequencies even though the glass was pretty long. any suggestions to get more accurate frequency readings would be very helpful. thanks