User:Paul Wormer

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I retired in 2005 from the Radboud University in Nijmegen (The Netherlands) as an Associate Professor in Theoretical Chemistry. Over the years I (co)authored about 150 research papers published in journals as "the Journal of Chemical Physics", "Molecular Physics", "Physical Review A", etc., see here for a fairly complete list. I got a (cum laude) MSc in Chemical Engineering, but after an internship at a Haber-Bosch plant I decided that Theoretical Chemistry was more my cup of tea. My (cum laude) Ph.D. thesis was on Group Theory and the Theory of Intermolecular Forces; both topics still hold my interest. Most of my working life was on the crossing of Chemistry, Molecular Physics, and Applied Mathematics. Several times I held an appointment as a Visiting Research Professor in Applied Mathematics at the University of Waterloo in Ontario. I was a Visiting Fellow of the Royal Society in Bristol and a Visiting Professor of Theoretical Chemistry in Warsaw.

From October 2006 until August 2007 I contributed to Wikipedia under the name P.wormer. After my relatively late arrival at WP I found that most basic science articles were already in existence, so I added mostly to the niche of more advanced, graduate level, science. After a probation period of nine months I got fed up with continuously defending my work against attacks by science illiterates and fled to Citizendium. On CZ I soon discovered that this encyclopedia was almost virginal and that the foundation in science still had to be laid. So, I will add as many basic science articles as I can to CZ.

I am not a native speaker of English and appreciate it very much when my grammar/spelling/wording is improved. I hate it, however, when content that I contributed is removed without good explanation (in the associated talk page or my personal talk page). So, please, if you feel it necessary to delete some of my work (and possibly replace it with something else), explain to me why you think so. I may even agree with you! In Wikipedia I was sometimes criticized as being too abstruse and I had to agree with that several times, after which I tried to do a better job. So, please let me know if you don't understand my writings; together we can make something nice.

Note to self

Don't waste time on articles in the following ("peer reviewed") journals:

Articles on electricity and magnetism

See Electromagnetic articles

CZ articles

The following is a list of CZ articles of which I am the main (or a major) author. See a separate page for article links related to electromagnetism.

  1. Stub 3j-symbol: Symmetrized form of Clebsch-Gordan coefficients. [e]
  2. Stub Acceleration due to gravity: The acceleration of a ponderable object, which is near the surface of the Earth, due to the Earth's gravitational force. [e]
  3. Developing Article Acceleration: The increase of an objects velocity (or speed) per unit time. [e]
  4. Developing Article Affine space: Collection of points, none of which is special; an n-dimensional vector belongs to any pair of points. [e]
  5. Stub Algebraic geometry: Discipline of mathematics that studies the geometric properties of the objects defined by algebraic equations. [e]
  6. Developing Article Amedeo Avogadro: (August 9, 1776 – July 9, 1856). An Italian physicist who proposed in 1811 Avogadro's law. [e]
  7. Developing Article Amsterdam: The capital city of the Netherlands; 2007 population 743,100. [e]
  8. Developed Article Angular momentum (classical): The tendency of a rotating object to resist changes to its rotational motion. [e]
  9. Developed Article Angular momentum (quantum): A vector operator of which the three components have well-defined commutation relations. [e]
  10. Developing Article Angular momentum coupling: The procedure of constructing eigenvectors of a system's angular momentum out of angular momentum eigenvectors of its subsystems. [e]
  11. Developed Article Antisymmetrizer: operator that projects onto an antisymmetric subspace of a tensor product space of identical linear spaces; [e]
  12. Developed Article Associated Legendre function: Function defined by where Pℓ denotes a Legendre function. [e]
  13. Developing Article Atomic electron configuration: A specification of the occupation of an atom's electron orbitals by electrons. [e]
  14. Developing Article Atomic mass constant: One twelfth of the mass of a carbon-12 atom in its nuclear and electronic ground state. It is equal to the unified atomic mass unit. [e]
  15. Developing Article Atomic mass: The mass of an atom expressed in unified atomic mass units (u) and formerly known as atomic weight. [e]
  16. Developed Article Atomic orbital: Function in quantum mechanics describing the motion of an electron around the nucleus of an atom. [e]
  17. Developing Article Atom (science): The defining unit of chemical elements. [e]
  18. Approved Article Augustin-Louis Cauchy: (1789 – 1857) prominent French mathematician, one of the pioneers of rigor in mathematics and complex analysis. [e]
  19. Developing Article Avogadro's constant: The number of entities (such as atoms, ions, or molecules) per mole; dimension mol−1 [e]
  20. Stub Battle of the Mookerheyde: A battle (in 1574) during the Dutch war of independence. [e]
  21. External Article Born-Oppenheimer approximation: A technique in quantum mechanics in which the kinetic energies of nuclei and electrons are calculated separately. [e]
  22. Stub Carbon dioxide: Chemical compound composed of two oxygen atoms covalently bonded to a single carbon atom. [e]
  23. Developing Article Carbon: Fourth most abundant chemical element in the Universe, with atomic number Z=6. [e]
  24. Stub Castle Howard: Eighteenth century palace in England. [e]
  25. Developed Article Classification of rigid rotors: A terminological scheme to classify rigid rotors by the relative size of their principal moments of inertia. [e]
  26. Developing Article Clebsch-Gordan coefficients: appear in total angular momentum eigenstates when written in terms of angular momentum states of subsystems. [e]
  27. Developed Article Count Rumford: (1753–1814) An American born soldier, statesman, scientist, inventor and social reformer. [e]
  28. Developing Article Digital object identifier: Unique label for a computer readable object that can be found on the internet, usually used in academic journals. [e]
  29. Developing Article Distribution (mathematics): Objects which generalize functions, used to formulate generalized solutions of partial differential equations. [e]
  30. Developed Article Eckart conditions: Equations describing the conditions under which the vibrations of molecules can be separated from molecular rotations and translations [e]
  31. Stub Ecliptic: Great circle that apparent orbit of Sun makes on celestial sphere. [e]
  32. Stub Electron configuration: The arrangement of electrons of an atom, a molecule, or other physical structure, distributed in the orbitals of the given system. [e]
  33. Developed Article Electron orbital: Quantum mechanical quadratically integrable one-electron function (function of the coordinates of one electron) [e]
  34. Developing Article Electron shell: A group of electron orbitals that share the same principal quantum number (n). [e]
  35. Developed Article Elements: In one sense, refers to species or types of atoms, each species/type distinguished by the number of protons in the nuclei of the atoms belonging to the species/type, each species/type having a unique number of nuclear protons; in another sense, refers to substances, or pieces of matter, each composed of multiple atoms solely of a single species/type. [e]
  36. Developing Article Energy: A measurable physical quantity of a system which can be expressed in joules (the metric unit for a quantity of energy) or other measurement units such as ergs, calories, watt-hours or Btu. [e]
  37. Developing Article Euclid's Elements: Mathematical and geometric treatise consisting of 13 books written by the Greek mathematician Euclid in Alexandria circa 300 BC. [e]
  38. Developing Article Euclid: (ca. 325 BC - ca. 265 BC) Alexandrian mathematician and known as the father of geometry. [e]
  39. Developing Article Gaussian type orbitals: Functions used as atomic orbitals in the LCAO method for the computation of electron orbitals in molecules. [e]
  40. External Article GF method: Method to compute the normal coordinates of a vibrating molecule. [e]
  41. Developed Article Geometric series: A series associated with a geometric sequence, i.e., consecutive terms have a constant ratio. [e]
  42. Developing Article Gravitation: The tendency of objects with mass to accelerate toward each other. [e]
  43. Stub Henry of Nassau-Dillenburg: Add brief definition or description
  44. Stub Holland: The western part of the Netherlands bordering the North Sea, divided into the provinces Noord Holland and Zuid Holland. [e]
  45. Developing Article Hund's rules: Rules for predicting the order of atomic energy levels with quantum numbers L, S and J. [e]
  46. Developed Article Hydrogen-like atom: An atom, excluding hydrogen itself, with only one electron, having charge +(Z-1), where Z = atomic number. [e]
  47. Developing Article Hydrogen: The most abundant and lightest chemical element which has atomic number Z = 1 and chemical symbol H. [e]
  48. Developed Article Intermolecular forces: Add brief definition or description
  49. Developing Article Iron: Add brief definition or description
  50. Stub Jacobus Kapteyn: Add brief definition or description
  51. Approved Article Johannes Diderik van der Waals: Add brief definition or description
  52. Stub Johannes Kepler: Add brief definition or description
  53. Developing Article Kilogram: Add brief definition or description
  54. Developing Article Laplace expansion (potential): Add brief definition or description
  55. Developed Article Legendre polynomials: Add brief definition or description
  56. Developing Article Lorentz medal: Add brief definition or description
  57. Developing Article Lucasian chair: Add brief definition or description
  58. Stub Mercaptan: Add brief definition or description
  59. Stub Methane: Add brief definition or description
  60. Stub Molar gas constant: Add brief definition or description
  61. Developing Article Mole (unit): Add brief definition or description
  62. Developed Article Molecular Hamiltonian: Add brief definition or description
  63. Stub Molecular mass: Add brief definition or description
  64. Developing Article Molecular orbital theory: Add brief definition or description
  65. Developing Article Molecular orbital: Add brief definition or description
  66. Developing Article Moller-Plesset: Add brief definition or description
  67. Stub Mook: Add brief definition or description
  68. Developed Article Multipole expansion (interaction): Add brief definition or description
  69. Developed Article Multipole expansion of electric field: Add brief definition or description
  70. Developed Article National Institute of Standards and Technology: Add brief definition or description
  71. Developing Article Netherlands: Add brief definition or description
  72. Developed Article Nicolaus Copernicus: Add brief definition or description
  73. Stub Nitrogen: Add brief definition or description
  74. Developing Article Oxygen: Add brief definition or description
  75. Stub Parallax: Add brief definition or description
  76. Stub Planck's constant: Add brief definition or description
  77. Developing Article Polar coordinates: Add brief definition or description
  78. Stub Ptolemy: Add brief definition or description
  79. Developing Article Rayleigh-Ritz method: Add brief definition or description
  80. Stub Raymond Chandler: Add brief definition or description
  81. Developed Article Rigid rotor: Add brief definition or description
  82. Stub Rotterdam: Add brief definition or description
  83. Developing Article Russell-Saunders coupling: Add brief definition or description
  84. Developing Article Sine: Add brief definition or description (Partially by me)
  85. Stub Sine rule: Add brief definition or description
  86. Developing Article Slater determinant: Add brief definition or description
  87. Developing Article Slater orbital: Add brief definition or description
  88. Stub SNOBOL: Add brief definition or description
  89. Developing Article Solid harmonics: Add brief definition or description
  90. Developed Article Spherical harmonics: Add brief definition or description
  91. Developing Article Spherical polar coordinates: Add brief definition or description
  92. Developed Article Stark effect: Add brief definition or description
  93. Stub Term symbol: Add brief definition or description
  94. Stub The Hague: Add brief definition or description
  95. Developing Article Unified atomic mass unit: Add brief definition or description
  96. Stub Utrecht: Add brief definition or description
  97. Approved Article Van der Waals equation: Add brief definition or description
  98. Developing Article Van der Waals forces: Add brief definition or description
  99. Developing Article Van der Waals molecule: Add brief definition or description
  100. Developed Article Van der Waals radius: Add brief definition or description
  101. Vector: Add brief definition or description (Partially)
  102. Stub Vector coupling: Add brief definition or description
  103. External Article Wigner D-matrix: Add brief definition or description
  104. Zsigmondy: Add brief definition or description


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