Xah Arts Blog
flying disc. quite interesting as nerd toy. but boring as a sport. Unless, Discs of TRON comes to life. flying disc
the darkness, and zombie nation
not sure why this thing exist.
The oligodynamic effect is a biocidal effect of metals, especially heavy metals, even in low concentrations. The effect was discovered in 1893 by Karl Wilhelm von Nägeli, although he did not identify the cause. Brass doorknobs and silverware both exhibit this effect.
[2017-07-03 Wikipedia Oligodynamic effect]
Marada the She-wolf (more images)