More commonly known as Fibonacci, Leonardo Bonacci is notable for popularising the Hindu-Arabic numeral system, with its use of zero, decimal points and 10 numbers instead of the ponderous Roman numeral system. He"s most famous, however, for his sequence of numbers: 0, 1, 1, 2, 3, 5, 8... By adding the first two numbers, you arrive at the third, and adding the previous two numbers, you arrive at the next number, and so on. Disregarding the zero, the first four numbers correspond to today"s date, 11/23.
Spiral aloe, Kangaroo Island, Australia
Today in History
More Desktop Wallpapers:
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Vale of Clwyd, Wales
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Thick-billed raven
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Leopard in a tree, Kruger National Park, South Africa
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Dolbadarn Castle, Llanberis, Wales
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Ksar Ouled Soltane, Tataouine district in southern Tunisia
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Gentoo penguins, Antarctica
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Eurasian red squirrel
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Gaztelugatxe islet at sunset, Basque Country, Spain
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Sea lion in a kelp forest, Baja California, Mexico
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Sydney Harbour, New South Wales, Australia
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Magellanic penguins, Volunteer Point, Falkland Islands
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Kalaloch Tree of Life, Olympic National Park, Washington, USA
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Athens and the Acropolis, Greece
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Leopard at Etosha National Park, Namibia
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Tombeau du Géant in Bouillon, Belgium
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Taktsang Palphug Monastery, Bhutan
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Great grey owls
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Photo of the moons surface through a telescope
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Spotted poinsettia
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Dhaka, Bangladesh
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Bryce Canyon National Park, Utah, USA
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Red fox
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Medieval city walls, Ávila, Spain
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Jeju Island, South Korea
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Radcliffe Camera and All Souls College, University of Oxford, England
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Old city wall of Hwaseong Fortress, Suwon, South Korea
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Constitución railway station, Buenos Aires, Argentina
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Donkeys in a valley near Rhyolite, Nevada, United States
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Bisti/De-Na-Zin Wilderness, New Mexico
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Jaswant Thada and Mehrangarh Fort, India
Bing Wallpaper Gallery

