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  2. Solid bleached board - Wikipedia

    en.wikipedia.org/wiki/Solid_bleached_board

    Solid bleached board (SBB) or solid bleached sulphate (SBS) is a virgin fibre grade of paperboard. This grade is made purely from bleached chemical pulp and usually has a mineral or synthetic pigment [ 1 ] coated top surface in one or more layers (C1S) and often also a coating on the reverse side (C2S).

  3. Heawood conjecture - Wikipedia

    en.wikipedia.org/wiki/Heawood_conjecture

    An entirely different approach was needed for the much older problem of finding the number of colors needed for the plane or sphere, solved in 1976 as the four color theorem by Haken and Appel. On the sphere the lower bound is easy, whereas for higher genera the upper bound is easy and was proved in Heawood's original short paper that contained ...

  4. Nitrogen-vacancy center - Wikipedia

    en.wikipedia.org/wiki/Nitrogen-vacancy_center

    Simplified atomic structure of the NV center. The nitrogen-vacancy center (N-V center or NV center) is one of numerous photoluminescent point defects in diamond.Its most explored and useful properties include its spin-dependent photoluminescence (which enables measurement of the electronic spin state using optically detected magnetic resonance), and its relatively long (millisecond) spin ...

  5. Cinnabar - Wikipedia

    en.wikipedia.org/wiki/Cinnabar

    The color and properties derive from a structure that is a hexagonal crystalline lattice belonging to the trigonal crystal system, crystals that sometimes exhibit twinning. Cinnabar has been used for its color since antiquity in the Near East , including as a rouge -type cosmetic , in the New World since the Olmec culture, and in China since as ...

  6. Rainbow Books - Wikipedia

    en.wikipedia.org/wiki/Rainbow_Books

    Orange is a reference to the fact that red and yellow mix to orange. This correlates with the fact that CD-R and CD-RW are capable of audio ("Red") and data ("Yellow"); although other colors (other CD standards) that do not mix are capable of being burned onto the physical medium. Orange Book also introduced the standard for multisession writing.

  7. Desert Battle Dress Uniform - Wikipedia

    en.wikipedia.org/wiki/Desert_Battle_Dress_Uniform

    A man modelling an early version of the DBDU on December 6, 1976. DBDU trousers, featuring the chocolate-chip camouflage pattern. The Desert Battle Dress Uniform was designed in 1970 [2] and uses a camouflage pattern known as the Six-Color Desert Pattern or colloquially as Chocolate-Chip Camouflage and Cookie Dough Camouflage.

  8. Vegas Golden Knights - Wikipedia

    en.wikipedia.org/wiki/Vegas_Golden_Knights

    The team's primary color is steel gray, which is said to represent "strength and durability". [1] [171] The other team colors are gold, red (found in the Las Vegas skyline and at Red Rock Canyon), and black (for "power and intensity"). [1] [172] The first uniforms in Golden Knights team history were unveiled publicly on June 20, 2017.

  9. Among the Sierra Nevada, California - Wikipedia

    en.wikipedia.org/wiki/Among_the_Sierra_Nevada...

    Among the Sierra Nevada was created in Rome in winter 1867–68, four years after Bierstadt's trip to the Sierra Nevada. [4] [5] The painting measures 72 by 120 + 1 ⁄ 8 inches (183 by 305 cm) and has an elaborate frame measuring 96 + 1 ⁄ 4 by 144 + 3 ⁄ 8 by 7 + 1 ⁄ 4 inches (244 by 367 by 18 cm).