Not sure where this is from, but I love it.

Sine vs Cosine.gif
sine vs. cosine

Update: Mike pointed out in the comments that it's sometimes called a "bullshit grinder" which lead me to a Wikipedia article with a little more information.


comments

Michal Migurski

They used to sell these at a knickknack store in New Haven when I was a kid, under the name "bullshit grinder".


britta

ooh! reminds me of one of my favorite wikipedia animations: http://en.wikipedia.org/wiki/Image:Geneva_mechanism_6spoke_animation.gif (see also: http://genevamechanism.ytmnd.com/)


andy

I have a wooden one of those.


comments for this entry have been closed.

before this i wrote transparent post-it after this i wrote zappos pays people to quit

navigation


The best fresh roasted coffee right to your door. It's easy! Give Tonx a try…