Iowa hung this post from the tumblr of “thepowerofmoonlight” on The Bulletin Board the Number People Use (the one outside the Math and Statistics bay in the SciTech Library) and posted it on the general Noakes Library tumblr, too. After all, she says, everybody uses numbers. Don’t forget to tip your server!
“Learnt an interesting thing today on this Arabic course,
The original Arabic number system looked like this, the one we now use.
It was designed so each character had the corresponding number of angles to the number, so the number 1 has 1 angle, 2 has 2 angles, 3 has 3, 0 has none etc…
It is so obvious now, I’ve always assumed its one of those things that just is, with no logical explanation, but here it is, perfectly simple and satisfying.
(From tumblr, via thepowerofmoonlight. Visit the Noakes Library Archives and Bulletin Boards tumblr here. )