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  2. United States Physics Olympiad - Wikipedia

    en.wikipedia.org/wiki/United_States_Physics_Olympiad

    The United States Physics Olympiad (USAPhO) is a high school physics competition run by the American Association of Physics Teachers and the American Institute of Physics to select the team to represent the United States at the International Physics Olympiad (IPhO). The team is selected through a series of exams testing their problem solving ...

  3. Angular momentum coupling - Wikipedia

    en.wikipedia.org/wiki/Angular_momentum_coupling

    In atomic physics, spin–orbit coupling, also known as spin-pairing, describes a weak magnetic interaction, or coupling, of the particle spin and the orbital motion of this particle, e.g. the electron spin and its motion around an atomic nucleus. One of its effects is to separate the energy of internal states of the atom, e.g. spin-aligned and ...

  4. Ligand field theory - Wikipedia

    en.wikipedia.org/wiki/Ligand_field_theory

    Ligand-Field scheme summarizing σ-bonding in the octahedral complex [Ti(H 2 O) 6] 3+. In molecular symmetry terms, the six lone-pair orbitals from the ligands (one from each ligand) form six symmetry-adapted linear combinations (SALCs) of orbitals, also sometimes called ligand group orbitals (LGOs).

  5. International Physics Olympiad - Wikipedia

    en.wikipedia.org/wiki/International_Physics_Olympiad

    The International Physics Olympiad (IPhO) is an annual physics competition for high school students. It is one of the International Science Olympiads. The first IPhO was held in Warsaw, Poland in 1967. [1] Each national delegation is made up of at most five student competitors plus two leaders, selected on a national level.

  6. 2 Delta attendants fail breathalyzer test before ... - AOL

    www.aol.com/2-delta-attendants-fail-breathalyzer...

    Updated December 3, 2024 at 5:08 AM Nicolas Economou/NurPhoto via Getty Images Two flight attendants for Delta Air Lines were pulled from an international flight after failing a breathalyzer test ...

  7. Wife of missionary killed in Angola arrested in connection to ...

    www.aol.com/wife-missionary-killed-angola...

    Beau Shroyer and his wife moved to Angola to serve as long-term missionaries through the organization SIM. In a statement, SIM said it was "heartbroken" to learn of Beau Shroyer's death and was ...

  8. Trump: Democrats made ‘BIG mistake’ getting Cheneys involved

    www.aol.com/news/trump-democrats-made-big...

    November 11, 2024 at 8:26 AM. President-elect Trump said Democrats made a “BIG mistake” getting involved with former Rep. Liz Cheney (R-Wyo.) and her father, former Vice President Dick Cheney ...

  9. Hubbard model - Wikipedia

    en.wikipedia.org/wiki/Hubbard_model

    [3] The Hubbard model introduces short-range interactions between electrons to the tight-binding model, which only includes kinetic energy (a "hopping" term) and interactions with the atoms of the lattice (an "atomic" potential). When the interaction between electrons is strong, the behavior of the Hubbard model can be qualitatively different ...