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  2. Thomson problem - Wikipedia

    en.wikipedia.org/wiki/Thomson_problem

    The Thomson problem also plays a role in the study of other physical models including multi-electron bubbles and the surface ordering of liquid metal drops confined in Paul traps. The generalized Thomson problem arises, for example, in determining arrangements of protein subunits that comprise the shells of spherical viruses. The "particles" in ...

  3. Plum pudding model - Wikipedia

    en.wikipedia.org/wiki/Plum_pudding_model

    Thomson's model marks the moment when the development of atomic theory passed from chemists to physicists. While atomic theory was widely accepted by chemists by the end of the 19th century, physicists remained skeptical because the atomic model lacked any properties which concerned their field, such as electric charge, magnetic moment, volume, or absolute mass.

  4. List of unsolved problems in physics - Wikipedia

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

    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. The others are experimental, meaning that there is a difficulty in creating an experiment to test a proposed theory or investigate a phenomenon in greater detail.

  5. Thomson scattering - Wikipedia

    en.wikipedia.org/wiki/Thomson_scattering

    Thomson scattering is an important phenomenon in plasma physics and was first explained by the physicist J. J. Thomson. As long as the motion of the particle is non-relativistic (i.e. its speed is much less than the speed of light), the main cause of the acceleration of the particle will be due to the electric field component of the incident ...

  6. List of experiments in physics - Wikipedia

    en.wikipedia.org/wiki/List_of_experiments_in_physics

    Thomson experiment: J. J. Thomson: Discovery Electron: 1901 Trouton–Noble experiment: Frederick Thomas Trouton and H. R. Noble. Negative result Luminiferous aether: 1905 Rubens tube: Heinrich Rubens: Demonstration Standing wave: 1908 Geiger–Marsden experiments: Hans Geiger, Ernest Marsden, Ernest Rutherford: Discovery Atomic nucleus: 1909 ...

  7. Thermoelectric effect - Wikipedia

    en.wikipedia.org/wiki/Thermoelectric_effect

    This Thomson effect was predicted and later observed in 1851 by Lord Kelvin (William Thomson). [9] It describes the heating or cooling of a current-carrying conductor with a temperature gradient. If a current density J {\displaystyle \mathbf {J} } is passed through a homogeneous conductor, the Thomson effect predicts a heat production rate per ...

  8. J. J. Thomson - Wikipedia

    en.wikipedia.org/wiki/J._J._Thomson

    Sir Joseph John Thomson (18 December 1856 – 30 August 1940) was an English physicist who received the Nobel Prize in Physics in 1906 for his discovery of the electron, the first subatomic particle to be found.

  9. List of unsolved problems in mathematics - Wikipedia

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

    Many mathematical problems have been stated but not yet solved. These problems come from many areas of mathematics, such as theoretical physics, computer science, algebra, analysis, combinatorics, algebraic, differential, discrete and Euclidean geometries, graph theory, group theory, model theory, number theory, set theory, Ramsey theory, dynamical systems, and partial differential equations.