back The Project ..........Who ..........What ..........How ..........When Team To Do Products contact us Please remember to put the text "IPTM" in the object line of your e-mail.

curiosity number 056 Luigi Giannelli Spira mirabilis     The spiral growth of the shells follows an order so perfect that it is expressed mathematically, wrapping in a logarithmic curve where each ray vector is proportionally larger than the previous year following a steady relationship. The logarithmic spiral was described in 1638 by Rene Descartes before and after Jacob Bernoulli, calling it "Spira mirabilis."