# Math Clock

This is a custom dial clock that I made at work. The clock is 12″ across and each numeral is replaced with an equivalent notation. The explanations for the numerals are listed below. Matthew Berardi helped a whole lot with the notations and I typeset using LaTeX.

If you’d like to buy this clock, you can do so on .

For years it was available at UnCommonGoods.com but is now a print on demand item from Zazzle.com.

#### Explanations:

- 1 Legendre’s constant http://en.wikipedia.org/wiki/Legendre%27s_constant
- 2 “An infinite number of mathematicians walk into the bar…” http://derdritte.soup.io/post/6961628/An-infinite-number-of-mathematicians-walk-into
- 3 A Unicode character XML “numeric character reference” http://en.wikipedia.org/wiki/Unicode_and_HTML
- 4 Modular arithmetic http://en.wikipedia.org/wiki/Modular_arithmatic
- 5 The Golden Mean reworked a little http://en.wikipedia.org/wiki/Golden_ratio
- 6 Three Factorial (3*2*1) http://en.wikipedia.org/wiki/Factorial
- 7 6.999999999999999999999.. Though a different number than 7, still equals 7 http://en.wikipedia.org/wiki/Repeating_decimal
- 8 Graphical representation of Binary code http://en.wikipedia.org/wiki/Binary_numeral_system
- 9 An example of a base-4 number http://en.wikipedia.org/wiki/Quaternary_numeral_system
- 10 A Binomial Coefficient http://en.wikipedia.org/wiki/Pascal%27s_triangle
- 11 An example of Hexadecimal encoding http://en.wikipedia.org/wiki/Hexadecimal
- 12 The cube root is the inverse of 12^3 http://en.wikipedia.org/wiki/Cube_root

Also at http://tinyurl.com/a8sg2x

### Buy it here!

Original version: