Silver ratio
The silver ratio is a number one greater than the square root of two; that is,
- <math>\delta_S = \sqrt{2} + 1 \approx 2.414 213 562 373 095 048 801 688 724 210 \dots<math>
The silver ratio is also defined by the continued fraction [2; 2, 2, 2, ...]:
- <math>\delta_S = 2 + \frac{1}{2 + \frac{1}{2 + \frac{1}{2 + \cdots}}}<math>
Its name is an allusion to the more well-known golden ratio, by analogy with the noble metals -- copper, silver, and gold.
The golden ratio conjugate is also sometimes erroneously termed the silver ratio.
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