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gold, silver, bronze 3

Today I show you another expression.
The golden, silver and bronze ratio can be expressed with fraction.

分数
Of course, lambda is the same role.
If n=1, lambda expresses the golden number.
If n=2, lambda expresses the silver number.
If n=3, lambda expresses the bronze number.

In fact, this fraction relates the Fibonacci sequence.
In Fibonacci sequence, each number is the sum of the previous two numbers.

yupana
This tool is called "yupana".
This tool's detail is below (by wikipedia).

A yupana (Quechua for "counting tool") is a calculator that was used by the Incas. Researchers believe that calculations were based on Fibonacci numbers to minimize the number of necessary grains per field.






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    上記広告は1ヶ月以上更新のないブログに表示されています。新しい記事を書くことで広告を消せます。