Musical Beer

Tuned Pale Ale is what they call it. Invented by Chris Mufalli and Matt Braun and brewed at a small microbrewery, this bottle of swill will not make you sing or play the guitar better, but the bottle can be used as a musical instrument, complete with a music scale and an accompanying harmonica juice harp band.  Ok, I made the last part up but the instrument and note parts are true.  Basically what’s cool about it is that the scale is that it allows you to know what note will play when you blow over the bottle’s mouth.  Here’s how they explain it:

The vibration here is due to the ’springiness’ of air: when you compress it, its pressure increases and it tends to expand back to its original volume. Consider a ‘lump’ of air at the neck of the bottle (shaded in the middle diagrams and in the animation below). The air jet can force this lump of air a little way down the neck, thereby compressing the air inside. That pressure now drives the ‘lump’ of air out but, when it gets to its original position, its momentum takes it on outside the body a small distance. This rarifies the air inside the body, which then sucks the ‘lump’ of air back in. It can thus vibrate like a mass on a spring (diagram at right). The jet of air from your lips is capable of deflecting alternately into the bottle and outside, and that provides the power to keep the oscillation going.

Cool!  As of now it’s sold out, but should be available soon for all of your drunk musical stylings.

Source: Geekosystem