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Subject: 
Re: Golden Ratio (was Over 70 LEGO products copied)
Newsgroups: 
lugnet.off-topic.geek
Date: 
Wed, 28 Jan 2004 18:45:36 GMT
Viewed: 
1047 times
  
"Bram Lambrecht" <bram@cwru.edu> wrote in message
news:Hs3wLt.254@lugnet.com...
In lugnet.off-topic.clone-brands, Larry Pieniazek wrote:
The Golden Section deals with things on a 2 dimensional level. For • instance,
2:3 is length:width, but the application of the Golden Section doesn't
provide for the third variable of depth. I think Mr. Clarke's dimensions • for
the monolith take the Greek ratio of 3:5 and created a pleasing three
dimensional shape out of a two dimensional ratio. If you notice: 1 • (first
number in monolith) plus 3 (golden section ratio) equals 4 (second • number in
monolith dimensions) plus 5 (second golden section ration) equals 9 • (final
number in monolith dimensions). Maybe I'm seeing a link that doesn't • exist
but it feels like there is. :)

There isn't a link there, because the Golden Section isn't 2:3...
The golden ratio is derive from a rectangle where if a square is cut from • the
rectangle, the remaining piece is another golden ratio rectangle.
So, the sides of the original rectangle are 1 and x.
The largest square that can be cut out has sides of length x.
Thus, the new rectangle has dimensions x, 1-x.

So, we have:
1/x = x/(1-x)
or
x = (1-x)/x
or
x^2 = 1-x
or
x^2 + x - 1 = 0
so
x = (sqrt(5) - 1)/2 = 0.618...

The relationship can also be written as the easier to remember:
1/x = 1+x
which leads to the same solution.
--Bram

My God.. LOL. On Lugnet you can learn about everything!

I allways use 1,2,3,5,8,13,21,34 etc..
(The relationship between the numbers, I assume it gets more precise as the
higher you go..)

/Joakim (Geek mode: ON).



Message is in Reply To:
  Re: Golden Ratio (was Over 70 LEGO products copied)
 
(...) There isn't a link there, because the Golden Section isn't 2:3... The golden ratio is derive from a rectangle where if a square is cut from the rectangle, the remaining piece is another golden ratio rectangle. So, the sides of the original (...) (20 years ago, 26-Jan-04, to lugnet.off-topic.clone-brands, lugnet.off-topic.geek)

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