Dilatación y giro de la espiral equiangular
"This curve was first recognized by Descartes. Jacob Bernouilli found it so fascinating that he arranged to have
it engraved on his tombstone with the inscription
Eadem mutata resurgo
These words ("Though changed I shall arise the same") express a remarkable consequence of the way the curve
can be shifted along itself by a dilative rotation: any dilatation has the same effect on it as a rotation, and
vice versa." (Coxeter)
When pressing the button "Animation" takes place a transformation of the spiral. Is a turn or an dilatation?
REFERENCES
Coxeter - Introduction to Geometry (John Whiley and sons)
Steinhaus - Mathematical Snapshots.