Ruben's+Tube

Description:
> Research, design, and build a Ruben's Tube

Members:
> Two groups of older students build -- only

Current Tasks:

 * 1) Can use natural gas (available in lab) or do we need propane tank?
 * 2) Decide on pipe diameter, because speaker diameter needs to be the same
 * 3) Figure out how we can use PC to source the sound and drive the speaker.
 * 4) Need part & materials list

Preparation Information:

 * Make use of others' designs as much as possible.
 * YouTube: http://www.youtube.com/watch?v=HpovwbPGEoo

Materials Needed and Cost Estimates:

 * 4" PVC pipe
 * 4" cap
 * 4" metal pipe?
 * gas hose
 * hose connector
 * Al foil