Spreadsheet Spectrum

I made today's post with Google Spreadsheets.

Here is the original. I used formulas to generate the series of numbers, and then used conditional formatting to do coloration.

My spreadsheet has a formula. This is the first row.

A1
B1
C1
=A3+A1-A2
=A4+A2-A3
=A5+A3-A4
... etc.

this generates a pattern.
1
2
3
2
1
2

The repeating unit is 
1
2
3
2

coat hangers

Total zen for me.

Featured Artist: kwantam

My boyfriend's friend and coworker kwantam has made this wonderful Ignignokt display out of printed circuit boards and LEDs. It's blindingly bright. Thankfully for his coworkers, it's behind frosted glass. The schematics for the Pocket Ignignokt board are available here.