Square slices of all the branches of the tree at each height remains the same and is equal to the area of ​​the cutoff of the main trunk Bashny.Net

This fact was noted 500 years ago by Leonardo da Vinci, who was known to be very observant. This relationship is called the "Rule of Leonardo" and for a long time, no one could figure out why this is happening.

In 2011, physicist Christophe Ella University of California, suggested his own explanation for the curious. Prior Ello generally considered version of the link between the rule of Leonardo and nutrition of trees, but the physicist claims that is not the case, and in fractals:

«In the work Ella used a simple mechanical approach. He considered the tree as a fractal (a figure, has some degree of self-similarity), each branch was modeled as a beam with a free end. Under these assumptions (and subject to the persistence over time the probability of breaking branches by the wind) it turned out that the law of Leonardo minimizes the likelihood that the tree branch would break under the pressure of the wind. »

blockquote> Colleagues Ello, in general, agreed with his calculations, and even said that the explanation is quite simple and obvious, but no one had previously somehow not thought of. Well, science is - is not uncommon.

via factroom.ru