what is the golden number?

Answer 1

Not to be confused with the golden ratio, in mathematics a specific ratio of two quantities, known sometimes as the golden number.

The golden numbers (sometimes capitalized) are numbers assigned to each year in sequence to indicate the year's position in a 19-year Metonic cycle. They are used in the computus, the calculation of the date of Easter and also in the Runic calendar. The golden number of any Julian or Gregorian calendar year can be calculated as the year number modulo 19, plus 1.

The term golden number was not used in classical times. Its first documented use is in the computistic poem Massa Compoti by Alexander de Villa Dei in 1200. Later, a scribe added it to tables originally composed by Abbo of Fleury in 988.

Answer 2

The golden number is the number 2

Answer 3

It's actually a ratio.
It's an achetype embedded in biology and consequently used in art & architecture.
The value is approximately 1 : 1.61803398875 (half of the sum of the square root of five and one).

The 'number' is also a solution to the equation x^2 - x - 1 = 0 (the other solution is actually the reciprocal of the 'number,' also equal to the 'number' minus one!).

In a well-drawn five-sided star, the ratio is everywhere.

The ratio can be approximated by successive terms in the Fibonacci sequence (1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, ...), the higher the terms you use, the better the approximation:
55/34 = 1.61765...
89/55 = 1.61818...
144/89 = 1.61798... notice the approximations 'oscillate' around the value.

You can find the ratio in plants (most famously sunflowers and pine cones), insects (ratio of a bee's thorax to abdomen), and even the human body (ratio of height to navel to height of head, lenght of forearm to length of hand, even the bones in your fingers are loosely tied to this ratio)!
Even entire galaxies fit the form of a 'golden spiral!'

Answer 4

Golden Mean:(sqrt(5)+1)/2, the value which satisfies the equation x^2=x+1.
It pops up in lots of different places.

Answer 5

It is a ratio rather than a number. The whole world knew about this number after "davinci code" of Dan Brown. The ratio is 1:1.618. It is called golden since, surprisingly it is found to be the ratio actually used by nature in its many creations. It can be more accurately computed using the ratio of suuccessive terms in the famous Fibonnaci series.

Answer 6

The golden number is phi which equals (1+sqrt(5))/2 and is a ratio found very common in nature, art, and architecture. It is also in the Fibonacci sequence.

Answer 7

Golden number is the number of milligrams of the protective colloid which prevents the coagulation of 10ml of a given gold sol when 1ml of 10% solution of NaCl is added to it.
For example: the coagulation of 10ml of gold sol is just prevented by addition of 0.025gm of starch to it before adding 1ml of 10% NaCl solution. Here 0.025gm=25milligram , so gold number is25

Answer 8

No such thning as a golden number but there is a golden ratio that artists have used forever ...

http://en.wikipedia.org/wiki/Golden_ratio