"The cosine of 1/x is undefined at x=0. It is also visually disturbing near x=0."
Engineering calculus professor (via mathprofessorquotes)
mathprofessorquotes is killing me, as usual
Scientific engravings from 1850
by John Philipps Emslie
(via the Wellcome Collection)
A Single Thread Wrapped Around Thousands of Nails by Kumi Yamashita
Kumi Yamashita , whose mind-blowing shadow artworks have been featured before, uses a single, unbroken thread wrapped around thousands of nails to create stunning portraits of women and men.
In the ongoing series entitled Constellation (a nod to the Greek tradition of tracing mythical figures in the sky), the Japanese artist (living and working in New York) uses three simple materials to produce these otherworldly works of art.