This is a place-holder for references to other related or not so related information.

• Twelve: can't keep a good number down:
  • Units in trigonometry: radians, degrees& grads: http://www.math.com/tables/algebra/functions/trig/units.htm
  • Dr Math talks about the number of units in a circle mentioning the Babylonians base sixty system: http://mathforum.org/dr.math/problems/perkey7.1.98.html
  • An extremely in-depth exposé of the leap second by the U.S. navy http://tycho.usno.navy.mil/leapsec.html and their alert that summarizes the effects http://tycho.usno.navy.mil/leap.html
• Bases
  • An Flash game for kids for using powers of ten to build numbers: http://www.learningbox.com/Base10/BaseTen.html
  • Kenny Felder's Base 8, and other math for people who are missing fingers this is a great single page exploration of bases http://www.ncsu.edu/felder-public/kenny/papers/bases.html
• Unsorted
  • List of small primes: http://www.utm.edu/research/primes/lists/small/
  • The Case Against Decimalisation (A. C. Aitken) Very similar message to this site's http://www.dozenalsociety.org.uk/pdfs/aitken.pdf