Daily photo: 2/08/2011
![Stacked barrel halves Stacked barrel halves](http://www.astrofiammante.net/wp-content/uploads/2011/08/020811.jpg)
Pi (n): The sixteenth letter of the Greek alphabet, also a transcendental number and mathematical constant whose value is the ratio of any circle's circumference to its diameter.
Pi (n): The sixteenth letter of the Greek alphabet, also a transcendental number and mathematical constant whose value is the ratio of any circle's circumference to its diameter.