The initial algorithmic principles from which Spectra was spawned, were developed by me while in high school in the 1960's. I later programmed a pattern engine (Color Expansions) and added tools as computers evolved. I discovered the definitive basis for the Spectra pattern sequence in 1986 and created the Spectra image in its current form in 1997. Spectra as contained in the puzzle, contains "8 orders of magnitude", going from white triangles to tiny violet dots, with the violet dots not being resolvable in the image shown here. By coincidence, this puzzle is puzzle #128.... a number in the Powers of 2 sequence 1, 2, 4, 8, 16, 32, 64. 128.......

This puzzle is difficult to assemble, something to keep the puzzle enthusiast up late at night! The puzzle also contains a puzzle cutting trick involving several pieces which may fool you... maybe not. If you order Spectra... when I cut it for you, I'll cut another trick into the puzzle (maybe better?). Edit: The trick was a little bit of double cutting in the white edges, so pieces could fit more than one way. Did not pursue this.