i did not know they were
i never noticed

makes the money go around

Federal Reserve Notes and the Golden Ratio of 1.618

Currently, Federal Reserve Notes exhibit an aesthetic proportion called "The Pell Ratio" (named after the mathematician, John Pell). If we take the length of any note and divide it by its width (or height), then the outcome is approximately 2.35 (2.348 = 15.5 cm ÷ 6.6 cm). This proportional ratio is very close to the ratio of 2.414, also known as one plus the square root of two (1 + √ 2 ).

The Pell series of numbers is: 0, 1, 2, 5, 12, 29, 70, 169, and so on...

These numbers can be derived by doubling the last number and adding it to the first. For example, twelve doubled and then added to five yields twenty-nine, (12 x 2) + 5 = 29. The proportional ratio of their growth rate can be found by dividing the last number into the previous number of this series, 169 ÷ 70 = 2.4142857142857. If we were to extend this series out further, we would find that the growth rate will more closely approximate one plus the square root of two (2.4142135623730951).

This "Pell" growth rate is NOT native to this planet. The Fibonacci series and the Fibonacci growth rate (aka, the golden ratio of 1.618) IS native to Earth.