The Golden Ratio: The Most Irrational Number

Concepts de base

The author discusses the significance of the golden ratio and its irrationality, emphasizing that it is the most irrational number.

Résumé

This article delves into the concept of the golden ratio, highlighting its historical significance and applications. It explains how this irrational number has been a subject of fascination for centuries due to its unique properties. The author also explores various real-world examples where the golden ratio is observed, such as in geometry, financial analysis, and even in art. Furthermore, it provides insights into how this number can be approximated by rational fractions and compares it with other irrationals like π. The article concludes by asserting that the golden ratio is indeed the most irrational number.

Stats

The golden ratio's value is about 1.618.
In Euclid, the proportion goes by the more mundane name of “division into extreme and mean.”
The Fibonacci sequence has ratios between consecutive terms that approach φ more closely as terms get larger.
Zu Chongzhi observed that 355/113 is incredibly close to π.

Citations

"The golden ratio doesn’t arise only in geometry; in the Fibonacci sequence, where each number is the sum of the two previous ones (1, 1, 2, 3, 5, 8, 13, 21, 34…), the ratios between consecutive terms approach φ more and more closely as the terms get larger and larger."
"Here’s a beautiful fact: You won’t find any better rational approximations to φ than those provided by the Fibonacci sequence."

Idées clés tirées de

The Number That Becomes More Amazing the More You Study It

by Jordan Ellen... à slate.com 06-08-2021

https://slate.com/technology/2021/06/golden-ratio-phi-irrational-number-ellenberg-shape.html

Questions plus approfondies

What are some other real-world applications or implications of irrational numbers?

Irrational numbers have numerous real-world applications and implications. One common application is in geometry, where the golden ratio appears in the proportions of various natural and man-made structures, such as the Parthenon and the human body. Additionally, irrational numbers are used in financial analysis, with some schools of thought suggesting that the golden ratio governs fluctuations in the stock market. Furthermore, irrational numbers play a crucial role in cryptography and data encryption, where their unpredictable nature makes them essential for securing sensitive information.

How does understanding irrational numbers contribute to advancements in mathematics?

Understanding irrational numbers is fundamental to advancements in mathematics. It allows mathematicians to explore new concepts and develop innovative theories that have practical applications across various fields. For example, the study of irrational numbers has led to significant developments in number theory, geometry, and algebra. Moreover, a deep understanding of irrational numbers has paved the way for breakthroughs in cryptography, data compression algorithms, and signal processing techniques.

What role does mysticism play in shaping perceptions about mathematical concepts?

Mysticism has played a significant role in shaping perceptions about mathematical concepts, particularly when it comes to certain special numbers like the golden ratio. Throughout history, mystical beliefs surrounding specific mathematical constants have influenced art, architecture, and even popular culture. The allure of these mystical associations has led to exaggerated claims about the significance of certain mathematical relationships. While mysticism can inspire creativity and fascination with mathematics, it's important for individuals to approach these concepts with a balanced perspective that considers both their historical significance and their practical applications within mathematics and other disciplines.