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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. 2021 Western North America heat wave - Wikipedia

    en.wikipedia.org/wiki/2021_Western_North_America...

    The 2021 Western North America heat wave was an extreme heat wave that affected much of Western North America from late June through mid-July 2021. [5] The heat wave affected Northern California, Idaho, Western Nevada, Oregon, and Washington in the United States, as well as British Columbia, and in its latter phase, Alberta, Manitoba, the Northwest Territories, Saskatchewan, and Yukon, all in ...

  4. Luxottica - Wikipedia

    en.wikipedia.org/wiki/Luxottica

    The company listed in New York in 1990, [20] and in Milan in December 2000, [21] joining the MIB-30 (now FTSE MIB) index in September 2003. [22] The listing raised money for the company and allowed it to use its shares to acquire other brands, starting with Italian brand Vogue Eyewear in 1990, Persol and LensCrafters in 1995, Ray-Ban from ...

  5. Heat pump - Wikipedia

    en.wikipedia.org/wiki/Heat_pump

    e. A heat pump is a device that consumes energy (usually electricity) to transfer heat from a cold heat sink to a hot heat sink. Specifically, the heat pump transfers thermal energy using a refrigeration cycle, cooling the cool space and warming the warm space. [1] In cold weather, a heat pump can move heat from the cool outdoors to warm a ...

  6. Heat exchanger - Wikipedia

    en.wikipedia.org/wiki/Heat_exchanger

    Heat exchanger. A heat exchanger is a system used to transfer heat between a source and a working fluid. Heat exchangers are used in both cooling and heating processes. [1] The fluids may be separated by a solid wall to prevent mixing or they may be in direct contact. [2]

  7. Urban heat island - Wikipedia

    en.wikipedia.org/wiki/Urban_heat_island

    A definition of urban heat island is: "The relative warmth of a city compared with surrounding rural areas." [14]: 2926 This relative warmth is caused by "heat trapping due to land use, the configuration and design of the built environment, including street layout and building size, the heat-absorbing properties of urban building materials, reduced ventilation, reduced greenery and water ...

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