[Diana in Wisconsin]

A project for winter days when you're stuck indoors. A Fibonacci Scarf. Release your Inner Math Geek! The process can be applied to crochet or knitting; you could probably come up with something sewn as well, using various strips of fabric sewn together in sequence.

http://crochetpatterns09.blogspot.com/2010/07/fibonacci-crochet-scarf.html

Who was Fibonnaci?

Fibonacci, known in his day as Leonardo of Pisa, was an Italian mathematician who lived during the Middle Ages. He is widely regarded as the finest mathematician of his age, and although little is known about him, most of us use the contributions of Fibonacci to society every day. In addition to the classical sequence of numbers named after him, Fibonacci also brought the use of Arabic numerals to the West, along with the use of decimal points. These two math features are often taken for granted today, but they were revolutionary in the Middle Ages.

The Fibonacci sequence is a series of numbers which are mathematically related to each other. Many people know at least the first few numbers in the sequence, which begins with: 0, 1, 1, 2, 3, 5, 8, 13, and continues with each number being the sum of the previous two numbers. The Fibonacci sequence is used to describe a number of phenomena, such as the golden ratio and the tendency of plants to grow in spirals, maximizing their efficiency in a neat Fibonacci sequence. It should be noted that Fibonacci did not discover this sequence, but he does deserve credit for introducing it to the West from India.

[Diana in Wisconsin]

http://crochetpatterns09.blogspot.com/2010/07/fibonacci-crochet-scarf.html

[pax_et_bonum]

Thank you for the thread, Diana!

How interesting!

Happy, Blessed New Year!

[FamiliarFace]

Happy New Year, FRiends!

[Pete from Shawnee Mission]

PHI = golden ratio proportions of 1.618 to 1.

https://www.goldennumber.net/nautilus-spiral-golden-ratio/

Is the Nautilus shell spiral a golden spiral?

February 8, 2014 by Gary Meisner 65 Comments Nautilus shell spirals may have phi proportions, but not as you may have heard.

The Nautilus shell if often associated with the golden ratio. There is a fair amount of confusion, misinformation and controversy though over whether the graceful spiral curve of the nautilus shell is based on this golden proportion. Some say yes, but offer no proof at all. Some show examples of spirals, but incorrectly assume that every equi-angular spiral in nature is a golden spiral. Several university math professors say no, but they only compared the nautilus spiral to the spiral created from a golden rectangle. Another university professor says no, but only measured height and width of the entire shell. Let’s look at this objectively and solve this mystery and debate."

"The golden spiral is then constructed by creating an arc that touches the points at which each of these golden rectangles are divided into a square and a smaller golden rectangle. "

More at link!

I wonder how a nautilus quilt would look?

Examples of Nautilus figure in Quilting...Search Results

[Baldwin77]

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