Fields · Study 008
Guilloché
Twenty-two interlaced wave rings form a guilloché rosette, the engraved security pattern from banknotes and watch dials, morphing as you move.
What you're looking at
Each ring is a circle whose radius is modulated by the product of two sine waves with different lobe counts. Stack twenty-two of them with a small phase step between neighbours and the lines weave into a lace that looks far more intricate than its recipe.
The idea behind it
Guilloché was cut by rose engines, geared lathes that rock the work against a cutter. Its value for currency is that the pattern is easy to generate mechanically and tedious to copy by hand, since a tiny error in one line breaks the visible rhythm of the whole.
Try this
Move left and right to change the number of lobes, up and down to change the inner weave.
