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Acoustics & Harmonics

1/21/2014

6 Comments

 
What you'll need to build a Balloon Chord Zither:
Balloon
2x4 or 1x4 board, approximately 2 feet long
7 inch rubber bands (available at Staples)
2 pencils

Wrap the rubber bands lengthwise around the board.
Blow up the balloon.  Big is OK!
Pull up on the rubber bands and push the balloon underneath them so it is trapped between them and the board.  It can be in the center or towards one end.
Slide a pencil between the balloon and the rubber bands
, one pencil on each side.  The rubber bands should only touch the balloon on its top, not after the go over the pencil.
Pluck the "strings"gently.
You can tune the zither by pulling the rubber bands more tightly to the bottom of the board.
You can increase the sound (amplification) by leaning a styrofoam cooler or cardboard box against the strings.

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10/7/2015 02:54:03 am

This is very creative. Reading the instructions and details of this post, it is also like doing a project in school. Like when we did an improvised weighing scale using cardboard, garter, ruler, pencil and a hook. By following the instructions on our Science textbook, we made this very helpful stuff. As a student, I really love doing experiments, through this, I learn, discover and do new things that are useful.

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