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# PHI in Nature. Chelsy, Molly, Cory.

the extensive number of forms in which Nature employs the proportion of Phi
by

## Chelsy Kozy

on 18 March 2010

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#### Transcript of PHI in Nature. Chelsy, Molly, Cory.

The statement 1:2::6:12 is describing two sets of two lines. The fact that this is a true proportion tells us that the two sets of lines are sharing a similar relationship with one another - namely that in both sets, the second line is twice as long as the first. If we were to look at the two sets of lines without being given any specific line length values, it would be possible to say that both sets have equal proportionate values. In other words, the actual lengths of the lines do not have to be assigned in order to understand that they share the same proportionate values.
The concept of phi Phi in Nature In an overwhelming number of plants, a given branch or leaf will grow out of the stem approximately 137.5 degrees around the stem relative to the prior branch. In other words, after a branch grows out of the plant, the plant grows up some amount and then sends out another branch rotated 137.5 degrees relative to the direction that the first branch grew out of. All plants use a constant amount of rotation in this way, although not all plants use 137.5 degrees. However, it is believed that the majority of all plants make use of either the 137.5 degree rotation or a rotation very close to it as the core number in their leaf or branch dispersion, sending out each and every leaf or branch after rotating 137.5 degrees around the stem relative to the prior branch.

it is interesting to note the off-balance five-pointed star that can be seen in the leaf pattern of plants that employ a 137.5 rotation scheme when they are viewed from above.
Two images have been provided here - one with five leaves, and the other with ten, so that the lopsided five-pointed design can be more easily understood. The red lines in both images connect the tips of the leaves in the order that they grow up the stem. Pine trees are also heavily influenced by Fibonnaci numbers and the Phi proportion. The needles that grow from pine tree branches do so in small groups. If the number of needles is counted in a given group, the answer will most certainly be a Fibonacci number, with different species of pine making use of different Fibonacci numbers - most often 3, 5, or 8 needles per group.

Phi In Plants Phi in Insect and Animal Forms As with plants, the proportion of 1:1.618 can be found in the structure of many insect and animal bodies most famous of all uses of Phi related proportions is that of the Nautilus shell, which adheres quite directly to the Golden Spiral. The End "The most beautiful thing we can experience is the mysterious. It is the source of all true art and science."
--Einstein, Albert (1879-1955), What I Believe. http://www.unitone.org/naturesword/
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