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 Posted: Wed Apr 25, 2007 11:53 am
For my class, I need ways this sequence is used in nature. I already know a few obvious ones, but I was wondering if anyone had any that were more interesting, because I am doing a presentation on it in class. Thanks!
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Posted: Wed May 02, 2007 10:34 am
So, flowers, rabbits, spiral seashells, you got those, right?
Actually, the more interesting instances in nature aren't so much the Fibonacci sequence as the Golden Mean, which shows up in, say, human body proportions: foot to navel v navel to head, the classically proportioned face is covered in Golden means.
A lot of crystals exhibit the Golden mean, since the Golden mean shows up in dodecahedra and icosahedra
I can't think of any other examples from nature off the top of my head.
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Posted: Wed Aug 29, 2007 11:28 pm
I thin the ratio of male bees to female in a hive. Im not sure though.
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Posted: Thu Aug 30, 2007 9:19 pm
This is a topic that always bothers me, because usually when i hear an appearance of the sequence (or rather, the proportion based upon it) in nature, i also hear it contradicted. I have not seen anything conclusive showing it in living organisms, as most things people point to have large amounts of variation.
The bee hive example is the one i see the most, and it is absurd when one considers how different beehives are. Other examples of mistaken perceptions of it are found by people looking at the human body, cephalopods, any number of plants and even the stock market.
I have been unable to find any actual examples of the sequence or proportion in nature, with the exception of the Nautilus shell, which is formed in a logarithmic spiral, and all logarithmic spirals are related to the proportion.
P.S. There are many examples of it being used in art, both known and surmised. Leonardo da Vinci is suspected to have used the proportion in much of his art, while Salvador Dali is known to have used it in his Last Supper.
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Posted: Wed Sep 12, 2007 2:40 pm
Completely off topic (Though still about the Fibonacci sequence)
I reckon Fibonacci must have been really bored when he came up with the sequnce.
Yesterday I had a test, and I finished just within the time that you are not allowed to leave th room.
So I spent fifteen minutes writing out the Fibonacci sequnce on the back of my test peper.
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Posted: Wed Oct 03, 2007 1:41 pm
I think artichokes follow that sequence... At least, that's what my math book says. *Is probably forever late on this*
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Posted: Wed Oct 03, 2007 11:51 pm
callmebutterfingers I think artichokes follow that sequence... At least, that's what my math book says. *Is probably forever late on this* I have not been able to find anything to support this idea. Not to completely dismiss it out-of-hand, i do caution that this is quite possibly untrue. Until somebody can offer a source or documentation to the claim, i would suggest a healthy dose of skepticism.
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Posted: Thu Oct 04, 2007 2:20 am
zz1000zz callmebutterfingers I think artichokes follow that sequence... At least, that's what my math book says. *Is probably forever late on this* I have not been able to find anything to support this idea. Not to completely dismiss it out-of-hand, i do caution that this is quite possibly untrue. Until somebody can offer a source or documentation to the claim, i would suggest a healthy dose of skepticism. Mkay. o.O Wait, they put lies in math books?
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Posted: Sat Oct 06, 2007 1:59 am
callmebutterfingers zz1000zz callmebutterfingers I think artichokes follow that sequence... At least, that's what my math book says. *Is probably forever late on this* I have not been able to find anything to support this idea. Not to completely dismiss it out-of-hand, i do caution that this is quite possibly untrue. Until somebody can offer a source or documentation to the claim, i would suggest a healthy dose of skepticism. Mkay. o.O Wait, they put lies in math books? Yes, but usually they are not put there as lies, but misconceptions. The people who make the books rely on the things said by people who make false claims. Often those false claims are based upon misunderstanding of data, rather than any actual ill intent.
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Posted: Sun Oct 07, 2007 5:09 pm
Okay, thank you for informing me of that.
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Posted: Sun Nov 30, 2008 10:36 am
The Zedd I thin the ratio of male bees to female in a hive. Im not sure though. nope the ratio between the two changes throughout the year my dad's a bee keeper =]
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