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  2. Phase-out of incandescent light bulbs - Wikipedia

    en.wikipedia.org/wiki/Phase-out_of_incandescent...

    According to this source, 1 November 2011 to 30 September 2012 will be a transitional period and as of 1 October 2012, imports and sales of ordinary incandescent bulbs of 100 watts or more will be prohibited. The first phase will be followed by a ban on 60-watt-and-higher incandescent light bulbs starting in October 2014.

  3. Xi'an Y-20 - Wikipedia

    en.wikipedia.org/wiki/Xi'an_Y-20

    The Y-20 incorporates a shoulder wing, T-tail, rear cargo-loading assembly, and heavy-duty retractable landing gear, consisting of three rows, with a pair of wheels for each row, totaling six wheels for each side. According to the deputy general designer, the shortest take-off distance of the Y-20 is 600 to 700 metres (2,000 to 2,300 ft). [7]

  4. Big Bang - Wikipedia

    en.wikipedia.org/wiki/Big_Bang

    Nonetheless, the general consistency with abundances predicted by BBN is strong evidence for the Big Bang, as the theory is the only known explanation for the relative abundances of light elements, and it is virtually impossible to "tune" the Big Bang to produce much more or less than 2030% helium. [105]

  5. Alibaba Group - Wikipedia

    en.wikipedia.org/wiki/Alibaba_Group

    The four sets of bonds were $1.5 billion of both 10-year and 30-year debt along with $1 billion of bonds due in 20 and 40 years. The 20-year bonds were designated as sustainability notes. [61] [62] [63]

  6. History of ExxonMobil - Wikipedia

    en.wikipedia.org/wiki/History_of_ExxonMobil

    ExxonMobil, an American multinational oil and gas corporation presently based out of Texas, has had one of the longest histories of any company in its industry.A direct descendant of John D. Rockefeller's Standard Oil, the company traces its roots as far back as 1866 to the founding of the Vacuum Oil Company, which would become part of ExxonMobil through its own merger with Mobil during the 1930s.

  7. Thermal expansion - Wikipedia

    en.wikipedia.org/wiki/Thermal_expansion

    A number of materials contract on heating within certain temperature ranges; this is usually called negative thermal expansion, rather than "thermal contraction".For example, the coefficient of thermal expansion of water drops to zero as it is cooled to 3.983 °C (39.169 °F) and then becomes negative below this temperature; this means that water has a maximum density at this temperature, and ...

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