Clay Klein bottle ~ “It’s a bad idea to put sealed items in a kiln because they will burst as they heat. It took some time to convince the staff that our Klein bottle was actually unsealed.”
Exploring Euclid’s Elements ~ proposition dependency tree for Book I of Elements
Just some good books about math, for those who like math ~ Summer reading suggestions in the article and the comments
Odd day ~ 5/7/09: how did I miss this one?
Even the Science Magazines Can Blow It Sometimes ~ When a coffee cup and a donut are not the same
For every action, there is an equal and oposite reaction ~ same advice I got from my physics teacher 20 years ago; I remember it to this day
Integral limericks ~ there once was a integrand from Nantucket…