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  2. Gamow factor - Wikipedia

    en.wikipedia.org/wiki/Gamow_factor

    Gamow [3] first solved the one-dimensional case of quantum tunneling using the WKB approximation.Considering a wave function of a particle of mass m, we take area 1 to be where a wave is emitted, area 2 the potential barrier which has height V and width l (at < <), and area 3 its other side, where the wave is arriving, partly transmitted and partly reflected.

  3. Stellar nucleosynthesis - Wikipedia

    en.wikipedia.org/wiki/Stellar_nucleosynthesis

    The reaction rate density between species A and B, having number densities n A,B, is given by: = where k is the reaction rate constant of each single elementary binary reaction composing the nuclear fusion process: = here, σ(v) is the cross-section at relative velocity v, and averaging is performed over all velocities.

  4. Sommerfeld parameter - Wikipedia

    en.wikipedia.org/wiki/Sommerfeld_parameter

    The Sommerfeld parameter η, named after Arnold Sommerfeld, is a dimensionless quantity used in nuclear astrophysics in the calculation of reaction rates between two nuclei and also appears in the definition of the astrophysical S-factor. It is defined as [1]

  5. Play Just Words Online for Free - AOL.com

    www.aol.com/games/play/masque-publishing/just-words

    Just Words. If you love Scrabble, you'll love the wonderful word game fun of Just Words. Play Just Words free online! By Masque Publishing

  6. NFL hot seat rankings: Which coaches are in most trouble ...

    www.aol.com/nfl-hot-seat-rankings-coaches...

    Several coaches are squarely on the NFL hot seat entering Week 18, with Mike McCarthy and Brian Daboll among those facing uncertain futures.

  7. George Gamow - Wikipedia

    en.wikipedia.org/wiki/George_Gamow

    [18] [19] [20] This work, in turn, evolved from his fundamental discovery of quantum tunneling as the mechanism of nuclear alpha decay, and his application of this theory to the inverse process to calculate rates of thermonuclear reaction. At first, Gamow believed that all the elements might be produced in the very high temperature and density ...

  8. How to Survive Puppy Teething, According to an Expert Trainer

    www.aol.com/survive-puppy-teething-according...

    4. Use a Long Tug Toy. A long tug toy may also come in handy, as it encourages the puppy to play with us without involving our bodies. A long tug toy works best because it creates distance between ...

  9. Cosmic microwave background - Wikipedia

    en.wikipedia.org/wiki/Cosmic_microwave_background

    1953 – George Gamow estimates 7 K based on a model that does not rely on a free parameter [116] [123]: 2181 1955 – Émile Le Roux of the Nançay Radio Observatory , in a sky survey at λ = 33 cm, initially reported a near-isotropic background radiation of 3 kelvins, plus or minus 2; he did not recognize the cosmological significance [ 116 ...