Back to gallery

Ordinary Equation

© Diana Yakowitz all rights reserved.

"E" Ordinary Object, E is for Equation (or Eraser). This is the fifth image in my Ordinary Object Set (sixth in set was out of order) in the flickrfriend challenge we call Odd Wednesday. Where we (three of us now!) will work our selves through the alphabet photographing an object for each letter that we normally would not think of photographing if it weren't for the challenge.

 

This famous equation is used all the time to find the circumference of a circle, C, if you know the diameter, d, in the form C = π d. Where most people think of π as a number 3.14159..... But, actually, π is defined as the ration of the circumference of a circle to it's diameter. And, it is universal because it is the same no matter what unit system one uses to measure. It has been calculated out to to many decimal places see www.math.utah.edu/~alfeld/math/pi.html for 10,000 digits. So while π, pronounced Pi, may be a P object, it is defined by an equation, my E object!

(and just in case you don't buy it as an object, I included the eraser I used to erase the numbers... ; )

 

DianaYak...'s Most Interesting Photos on Flickriver

 

3,432 views
11 faves
32 comments
Uploaded on September 9, 2009
Taken on September 8, 2009