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Click on one of the "numbers" in the circle for an explanation.

Unused

e

\i

\pi

\sqrt2

\sqrt3

\sqrt5

\phi

Click on the smallest nonzero value

To calculate Euler's Number simply begin with 1 and add to it as a small a number as possible.

Next take the result and multiply it by itself as many times as possible. Written as a limit that calculation looks like this:

The Square root of 2 is also called the Pythagorean Number. Geometrically it is the length of the hypotenuse of a right isosolese triangle with legs of length 1.

The Square roots of 3 and 5 are also unique enough to merit special attention. They both emerge from a simple and classic geometric construction.