Spiral aloe, Kangaroo Island, Australia Nov 23, 2024

Spiral aloe, Kangaroo Island, Australia

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.

© Michael Melford/Alamy

palette

Today in History

Nov 23, 2023Teide National Park, Tenerife, Canary Islands
Nov 23, 2025Ammonite fossil from Madagascar

More Desktop Wallpapers:

Apr 3, 2025Saguaro National Park, Arizona, United State
Feb 20, 2026Horsetail Fall in Yosemite National Park, California, United States
Jul 28, 2025Yurts in Mongolia
Sep 30, 2024Walruses in Svalbard, Norway
Mar 28, 2024Cherry blossoms in Shanghai, China
Dec 11, 2025The summit of Mount Everest at sunset, seen from Renjo La, Nepal
Jul 27, 2024Vineyards above the Moselle River, Rhineland-Palatinate, Germany
May 8, 2025Donkeys in a valley near Rhyolite, Nevada, United States
Jun 11, 2025Greater flamingos
Feb 19, 2026Dragons Eye, Uttakleiv Beach, Norway
Jan 10, 2025Abraham Lake, Alberta, Canada
Jul 19, 2025Luna moth
Sep 17, 2023Cuban tody, Alejandro de Humboldt National Park, Cuba
Feb 10, 2026Es Vedrà and Es Vedranell, Ibiza, Spain
Mar 11, 2025Broken Beach in Nusa Penida, Bali, Indonesia
Jan 23, 2024Maldives
Apr 21, 2025Joshua trees under the Milky Way, California, United States
Jan 6, 2026Nuuk, Greenland
Mar 3, 2025Yellow-billed hornbills in Kruger National Park, South Africa
Oct 3, 2023Whitehaven Beach, Whitsunday Islands, Australia
Dec 11, 2023Huangshan Mountains, China
Oct 9, 2025Pillars of Creation
Nov 22, 2025Monte Sirente, Abruzzo, Italy
July 11, 2026Coral reef and beach in Raja Ampat, Indonesia
Oct 2, 2025Oxbow Bend on the Snake River, Wyoming, United States
Jun 3, 2025Bicycles on a bridge in Utrecht, Netherlands
Mar 21, 2024Bwindi Impenetrable Forest, Uganda
Nov 30, 2025Christmas market in Leipzig, Germany
June 22, 2026Quinault rainforest, Olympic National Park, Washington state, USA
Oct 2, 2023Verdon Gorge, France