Fibonacci Numbers, Lucas Numbers, and the Way Plants Grow

(Video Link)

The highly entertaining Vi Hart is back with another episode of Doodling in Math Class. Her videos are fun to watch, clear and easy to understand, and express the joy of scientific discovery:

This pattern is not just useful, not just beautiful, but inevitable. This is why science and mathematics are so much fun. You discover things that seem impossible to be true and then get to figure out why it's impossible for them to not be.

-via Make

Related: a wonderful cartoon by Abstruse Goose that makes the same point.

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What a great video! Nice explanation with that plants and drawings. It is nice to see that Fibonacci numbers are everywhere. I am using them in trading markets, and from what I know some of traders are also using Lucas Numbers.

And I think Chris is right about that Fibonacci cocaine :D
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