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  2. Liquid-crystal display - Wikipedia

    en.wikipedia.org/wiki/Liquid-crystal_display

    A liquid-crystal display (LCD) is a flat-panel display or other electronically modulated optical device that uses the light-modulating properties of liquid crystals combined with polarizers. Liquid crystals do not emit light directly [1] but instead use a backlight or reflector to produce images in color or monochrome.

  3. Planck's law - Wikipedia

    en.wikipedia.org/wiki/Planck's_law

    Planck's law accurately describes black-body radiation. Shown here are a family of curves for different temperatures. The classical (black) curve diverges from observed intensity at high frequencies (short wavelengths).

  4. Isaac Newton - Wikipedia

    en.wikipedia.org/wiki/Isaac_Newton

    During this period he investigated the refraction of light, demonstrating that the multicoloured image produced by a prism, which he named a spectrum, could be recomposed into white light by a lens and a second prism. [63] Modern scholarship has revealed that Newton's analysis and resynthesis of white light owes a debt to corpuscular alchemy. [64]

  5. Werner Heisenberg - Wikipedia

    en.wikipedia.org/wiki/Werner_Heisenberg

    Werner Heisenberg. Werner Karl Heisenberg (/ ˈhaɪzənbɜːrɡ /; [2] German: [ˈvɛʁnɐ kaʁl ˈhaɪzn̩bɛʁk] ⓘ; 5 December 1901 – 1 February 1976) [3] was a German theoretical physicist, one of the main pioneers of the theory of quantum mechanics, and a principal scientist in the Nazi nuclear weapons program during World War II.

  6. List of largest cities - Wikipedia

    en.wikipedia.org/wiki/List_of_largest_cities

    Metropolitan area. Tokyo, the world's largest city and metropolitan area. A city can be defined by the inhabitants of its demographic population, as by metropolitan area, or labour market area. UNICEF defines metropolitan area as follows: A formal local government area comprising the urban area as a whole and its primary commuter areas ...

  7. The Keys to the White House - Wikipedia

    en.wikipedia.org/wiki/The_Keys_to_the_White_House

    The Keys to the White House. The Keys to the White House is a prediction system for determining the outcome of presidential elections in the United States. It was developed by American historian Allan Lichtman and Russian geophysicist Vladimir Keilis-Borok in 1981, adapting prediction methods that Keilis-Borok designed for earthquake prediction.

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