The 17th-century Swiss mathematician Jakob Bernoulli was fascinated by the logarithmic spiral. He called it "spira mirabilis". -- ghunchu'wI' -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.kli.org/pipermail/tlhingan-hol-kli.org/attachments/20170905/bd6413ec/attachment-0003.htm>