What the Golden Ratio Says About Your Bellybutton

A yellowish-green apple with a short brown stem, centered on a light blue background. Math, Revealed What an apple, a pentagram and a bellybutton have in common By Steven Strogatz Photo illustrations by Jens Mortensen Each installment of “Math, Revealed” starts with an object, uncovers the math behind it and follows it to places you … Read more