Altering the Procedure

Yesterday, we met up and did many test trials of our experiment. After many revisions, we finally got it to work. Below are the aspects of the project that we changed.

Alterations:

• To reduce the friction, we will replace the wooden dowel with a wire coat hanger and tie it to the end of a piece of thread and attach the other end to the ceiling. 
• The bottles will be taped to either end of the coat hanger. This will minimize friction and make the contraption more stable. 
• The bottles will be taped to either end of the coat hanger instead of being attached with rubber bands.
•  We will use a larger speaker than previously expected and center the contraption over it. 
• We will match the frequency of the bottle by recording the sound it makes when blown into, analyzing it with a computer program to find the exact frequency, and replicate it using a keyboard which will be hooked up to the speaker.

We will meet again in two weeks to implement these changes, and conduct our experiment with the variables (volume of the sound vs. velocity of the bottles), and we will record our results.

-The PhysicsTreeStinger Crew

(Annelise, Melanie, Colin, and Dominic)