Golden Spiral: What is the Fibonacci Sequence and the Golden Ratio?

What is the golden spiral? Fibonacci sequence? Golden ratio? Have you ever held a seashell up to your ear to hear the ocean? If you look closely at the shell you will notice a spiral; this is not unique to seashells as this pattern frequently occurs in nature. To understand the spirals that occur in sunflowers, pineapples, and the Mona Lisa we must look into the work of Fibonacci, an Italian mathematician. We will also uncover the mathematical constant phi, otherwise known as the golden ratio, by observing nature, architectural works, and art pieces. Finally, we will derive phi’s close relationship to the Fibonacci sequence. After completing this course it will be impossible to ignore the golden spiral in your everyday life!