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  2. List of academic databases and search engines - Wikipedia

    en.wikipedia.org/wiki/List_of_academic_databases...

    The main academic full-text databases are open archives or link-resolution services, although others operate under different models such as mirroring or hybrid publishers. . Such services typically provide access to full text and full-text search, but also metadata about items for which no full text is availa

  3. List of important publications in physics - Wikipedia

    en.wikipedia.org/wiki/List_of_important...

    This is a list of noteworthy publications in physics, organized by type. General audience. List of books on popular physics concepts; Textbooks. List of textbooks on ...

  4. Courant–Snyder parameters - Wikipedia

    en.wikipedia.org/wiki/Courant–Snyder_parameters

    One dimensional position-momentum plot, showing the beam ellipse described in terms of the Courant–Snyder parameters. In accelerator physics, the Courant–Snyder parameters (frequently referred to as Twiss parameters or CS parameters) are a set of quantities used to describe the distribution of positions and velocities of the particles in a beam. [1]

  5. An Exceptionally Simple Theory of Everything - Wikipedia

    en.wikipedia.org/wiki/An_Exceptionally_Simple...

    The paper was posted to the physics arXiv by Antony Garrett Lisi on November 6, 2007, and was not submitted to a peer-reviewed scientific journal. [3] The title is a pun on the algebra used, the Lie algebra of the largest " simple ", " exceptional " Lie group , E 8 .

  6. Sampling (signal processing) - Wikipedia

    en.wikipedia.org/wiki/Sampling_(signal_processing)

    A sample is a value of the signal at a point in time and/or space; this definition differs from the term's usage in statistics, which refers to a set of such values. [ A ] A sampler is a subsystem or operation that extracts samples from a continuous signal .

  7. Timeline of nuclear power - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_nuclear_power

    The decision is based on the plutonium proliferation risk, especially the 1974 first Indian nuclear weapons test, Smiling Buddha. [121] 1978. On November 5, voters in Austria reject a referendum to allow the startup of its first nuclear power plant, Zwentendorf, by 50.47% to 49.53%. A subsequent law makes Austria the first country to ban ...

  8. Brownian motion - Wikipedia

    en.wikipedia.org/wiki/Brownian_motion

    The first person to describe the mathematics behind Brownian motion was Thorvald N. Thiele in a paper on the method of least squares published in 1880. This was followed independently by Louis Bachelier in 1900 in his PhD thesis "The theory of speculation", in which he presented a stochastic analysis of the stock and option markets.

  9. List of unsolved problems in physics - Wikipedia

    en.wikipedia.org/wiki/List_of_unsolved_problems...

    The following is a list of notable unsolved problems grouped into broad areas of physics. [1]Some of the major unsolved problems in physics are theoretical, meaning that existing theories seem incapable of explaining a certain observed phenomenon or experimental result.