51.5 MB (4.9 MB compressed)
5097 x 3532 pixels
43.2 x 30.0 cm ⏐ 17.0 x 11.8 in (300dpi)
GEORGE POST / SCIENCE PHOTO LIBRARY GEORGE POST / SCIENCE PHOTO LIBRARY
Romanesco broccoli florets. Close-up of florets of Romanesco broccoli (Brassica sp.) showing their typical spiral shape. The spiral shapes of the florets describe a Fibonacci mathematical series, one in which each number is the sum of two previous numbers. For example: 0, 1, 1, 2, 3, 5, 8, 13, 21 and so on. This series was discovered by Italian mathematician Leonardo Fibonacci (1170-1240) and many natural patterns can be described using it. The florets are edible, and are a good source of vitamins A and C, and of the essential minerals iron and potassium.
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