Spirograph is a geometric drawing device that produces mathematical roulette curves of the variety technically known as hypotrochoids and epitrochoids.
This is a time lapse of a spirograph at work
This is a time lapse of a spirograph at work
Spirograph is a geometric drawing device that produces mathematical roulette curves of the variety technically known as hypotrochoids and epitrochoids.
This is a time lapse of a spirograph at work