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  2. Mach wave - Wikipedia

    en.wikipedia.org/wiki/Mach_wave

    Schlieren photograph of an attached shock on a sharp-nosed supersonic body. The Mach angle is acute, showing that the body exceeds Mach 1. The angle of the Mach wave (~59 degrees) indicates a velocity of about Mach 1.17.

  3. 7-Eleven - Wikipedia

    en.wikipedia.org/wiki/7-Eleven

    7-Eleven, Inc. [2] is an American convenience store chain, headquartered in Irving, Texas.The chain was founded in 1927 as the Southland Ice Company, operating an ice house storefront in Dallas.

  4. Blue spruce - Wikipedia

    en.wikipedia.org/wiki/Blue_spruce

    The blue spruce (Picea pungens), also commonly known as Colorado spruce or Colorado blue spruce, is a species of spruce tree native to North America in Arizona, Colorado, Idaho, New Mexico, Utah and Wyoming. [4]

  5. List of trees and shrubs by taxonomic family - Wikipedia

    en.wikipedia.org/wiki/List_of_trees_and_shrubs...

    Angiospermae; Scientific name Common name Family FIA Code (US) Conservation status Hardwoods; Aceraceae: maple family; Acer: maples; Acer amplum: broad maple Aceraceae (maple family)

  6. Carbon dioxide - Wikipedia

    en.wikipedia.org/wiki/Carbon_dioxide

    The symmetry of a carbon dioxide molecule is linear and centrosymmetric at its equilibrium geometry. The length of the carbon–oxygen bond in carbon dioxide is 116.3 pm, noticeably shorter than the roughly 140 pm length of a typical single C–O bond, and shorter than most other C–O multiply bonded functional groups such as carbonyls. [19]

  7. Sustainable Development Goals - Wikipedia

    en.wikipedia.org/wiki/Sustainable_Development_Goals

    The SDGs include three environment-focused SDGs, which are Goal 13, 14 and 15 (climate, land and oceans), but there is no overarching environmental or planetary goal. [166]: 144 The SDGs do not pursue planetary integrity as such. [166]: 144 Other SDGs, which as Goal 7, 12 and 13 ignore the planetary limits and encourage consumption [170]

  8. List of How It's Made episodes - Wikipedia

    en.wikipedia.org/wiki/List_of_How_It's_Made_episodes

    How It's Made is a documentary television series that premiered on January 6, 2001, on the Discovery Channel in Canada and Science in the United States. The program is produced in the Canadian province of Quebec by Productions MAJ, Inc. and Productions MAJ 2.

  9. History of the graphical user interface - Wikipedia

    en.wikipedia.org/wiki/History_of_the_graphical...

    This was a keyboard-based environment without the Workbench GUI. Later they could invoke it with the CLI/SHELL command "LoadWB" which loaded Workbench GUI. One major difference between other OS's of the time (and for some time after) was the Amiga's fully multi-tasking operating system , a powerful built-in animation system using a hardware ...