Leonardo da Vinci

Leonardo da Vinci

Over 500 years ago, Leonardo da Vinci made an interesting observation about trees. Da Vinci wrote in his notebook that "all the branches of a tree at every stage of its height when put together are equal in thickness to the trunk." In other words, if a tree’s branches were folded upward and squeezed together, the tree would look like one big trunk with the same thickness from top to bottom.

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