knit in the round manually on a double bed kr-850 on a brother kh-930 knitting machine. carbon-based life form not included. used up lots of odds and ends of black from the stash, some of it not exactly knitting machine friendly ;) total weight: 213 grams. 180 cm long by 14 cm wide.

python based pattern generator http://progsoc.org/~curious/files/software/spectra/index.cgi

pattern link and idea via Becky Stern http://sternlab.org/2010/02/emission-spectra-scarves/