Some of you may remember a harmonograph I constructed a very long time ago. A few months ago it was noticed by someone from Barnes & Noble who was involved in the soon-to-be book The Art and Science of Spirals. Below is the picture that I expect to be in the book when it comes out in August.
In fact, they even wanted to pay me for this, and asked for an invoice. I then created my first invoice ever, No 001 and sent it to them. Its copied below.
And to my near disbelief, they actually sent a check a bit later!
So expect another blog post when I get mailed my free copy of the book - hopefully soon! (they say "August").