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  2. Physics of the Impossible - Wikipedia

    en.wikipedia.org/wiki/Physics_of_the_Impossible

    Force fields are vital for surviving any battle in the fictional world, but what exactly are force fields? In science fiction force fields are very straight forward, but to make a repulsive force does appear impossible to make in a lab. Gravity appears in the four force list in Kaku's book. Gravity acts as the exact opposite of a force field ...

  3. Quantum mechanics of time travel - Wikipedia

    en.wikipedia.org/wiki/Quantum_mechanics_of_time...

    The theoretical study of time travel generally follows the laws of general relativity. Quantum mechanics requires physicists to solve equations describing how probabilities behave along closed timelike curves (CTCs), which are theoretical loops in spacetime that might make it possible to travel through time.

  4. Higgs boson - Wikipedia

    en.wikipedia.org/wiki/Higgs_boson

    Two of the three PRL papers (by Higgs and by GHK) contained equations for the hypothetical field that eventually would become known as the Higgs field and its hypothetical quantum, the Higgs boson. [70] [71] Higgs' subsequent 1966 paper showed the decay mechanism of the boson; only a massive boson can decay and the decays can prove the mechanism.

  5. Exact solutions in general relativity - Wikipedia

    en.wikipedia.org/wiki/Exact_solutions_in_general...

    Even after such symmetry reductions, the reduced system of equations is often difficult to solve. For example, the Ernst equation is a nonlinear partial differential equation somewhat resembling the nonlinear Schrödinger equation (NLS). But recall that the conformal group on Minkowski spacetime is the symmetry group of the Maxwell equations.

  6. Anti-gravity - Wikipedia

    en.wikipedia.org/wiki/Anti-gravity

    The existence of anti-gravity is a common theme in science fiction. [45] The Encyclopedia of Science Fiction lists Francis Godwin's posthumously-published 1638 novel The Man in the Moone, where a "semi-magical" stone has the power to make gravity stronger or weaker, as the earliest variation of the theme. [45]

  7. Atmospheric model - Wikipedia

    en.wikipedia.org/wiki/Atmospheric_model

    In atmospheric science, an atmospheric model is a mathematical model constructed around the full set of primitive, dynamical equations which govern atmospheric motions. It can supplement these equations with parameterizations for turbulent diffusion, radiation , moist processes ( clouds and precipitation ), heat exchange , soil , vegetation ...

  8. List of unsolved problems in astronomy - Wikipedia

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

    This article is a list of notable unsolved problems in astronomy.Problems may be theoretical or experimental. Theoretical problems result from inability of current theories to explain observed phenomena or experimental results.

  9. Quantum foam - Wikipedia

    en.wikipedia.org/wiki/Quantum_foam

    A graphic representation of Wheeler's calculations of what quantum reality may look like at the Planck length. Quantum foam (or spacetime foam, or spacetime bubble) is a theoretical quantum fluctuation of spacetime on very small scales due to quantum mechanics.