Fibonacci Sequence and Grapefruit
Date: 12/6/95 at 18:12:54 From: Roger W. Hevessy Subject: Fibonacci Sequence and sliced grapefruit Dear Dr., can you explain how the Fibonacci recursive sequence can be related or used to explain the appearance of the sections of a grapefruit sliced in half? Thanks, Kelley Hevessy
Date: 6/10/96 at 22:0:18 From: Doctor Leigh Subject: Re: Fibonacci Sequence and sliced grapefruit Dear Kelley, The numbers from the Fibonacci recursive sequence can be found in many areas of nature, including grapefruits. When the grapefruit is halved count the number of divisions inside, you should end up with a number from Fibonacci. Other things with Fibonacci numbers include the sides of a banana, counting around a pineapple (starting at the bottom and following the divisions in a spiral up to the top), as well as counting the number of sections in each circle of an artichoke. Thanks for your question! I hope this has answered it. -Doctor Leigh Ann, The Math Forum
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