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  2. Postulates of special relativity - Wikipedia

    en.wikipedia.org/wiki/Postulates_of_special...

    1. First postulate (principle of relativity) The laws of physics take the same form in all inertial frames of reference.. 2. Second postulate (invariance of c) . As measured in any inertial frame of reference, light is always propagated in empty space with a definite velocity c that is independent of the state of motion of the emitting body.

  3. Bohr–Sommerfeld model - Wikipedia

    en.wikipedia.org/wiki/Bohr–Sommerfeld_model

    The Bohr–Sommerfeld model (also known as the Sommerfeld model or Bohr–Sommerfeld theory) was an extension of the Bohr model to allow elliptical orbits of electrons around an atomic nucleus. Bohr–Sommerfeld theory is named after Danish physicist Niels Bohr and German physicist Arnold Sommerfeld .

  4. Bohr model - Wikipedia

    en.wikipedia.org/wiki/Bohr_model

    II:106 Although Bohr's model would also rely on just the electron to explain the spectrum, he did not assume an electrodynamical model for the atom. The other important advance in the understanding of atomic spectra was the Rydberg–Ritz combination principle which related atomic spectral line frequencies to differences between 'terms ...

  5. List of theorems - Wikipedia

    en.wikipedia.org/wiki/List_of_theorems

    Bohr–Mollerup theorem (gamma function) Bohr–van Leeuwen theorem ; Bolyai–Gerwien theorem (discrete geometry) Bolzano's theorem (real analysis, calculus) Bolzano–Weierstrass theorem (real analysis, calculus) Bombieri's theorem (number theory) Bombieri–Friedlander–Iwaniec theorem (number theory) Bondareva–Shapley theorem

  6. Here's the Typical Net Worth for Your Income - AOL

    www.aol.com/heres-typical-net-worth-income...

    5.12. Data source: Federal Reserve. Calculations by author. You'll also notice a metric called "net worth multiple" at the bottom of the table. That's how much the median household is worth ...

  7. Correspondence principle - Wikipedia

    en.wikipedia.org/wiki/Correspondence_principle

    In 1913, he provided the first postulates of what is now known as old quantum theory. [2] Using these postulates he obtained that for the hydrogen atom, the energy spectrum approaches the classical continuum for large n (a quantum number that encodes the energy of the orbit). [4] Bohr coined the term "correspondence principle" during a lecture ...

  8. Severe weather to rattle south-central US through Saturday - AOL

    www.aol.com/weather/severe-weather-rattle-south...

    A post-Christmas severe weather event put more than 10 million people at risk for damaging thunderstorms across part of the south-central United States. The area that was at risk for severe ...

  9. European stocks perk up as markets slow for Thanksgiving - AOL

    www.aol.com/news/asian-stocks-subdued-dollar...

    LONDON/SINGAPORE (Reuters) -European shares ticked up on Thursday after falling the previous day, while Asian stocks slipped, as trading volumes thinned ahead of the U.S. Thanksgiving holiday.