enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Spin (physics) - Wikipedia

    en.wikipedia.org/wiki/Spin_(physics)

    The study of the behavior of such "spin models" is a thriving area of research in condensed matter physics. For instance, the Ising model describes spins (dipoles) that have only two possible states, up and down, whereas in the Heisenberg model the spin vector is allowed to point in any direction.

  3. Spinor - Wikipedia

    en.wikipedia.org/wiki/Spinor

    The spin representation Δ is a vector space equipped with a representation of the spin group that does not factor through a representation of the (special) orthogonal group. The vertical arrows depict a short exact sequence.

  4. Chirality (physics) - Wikipedia

    en.wikipedia.org/wiki/Chirality_(physics)

    So a standard clock, with its spin vector defined by the rotation of its hands, has left-handed helicity if tossed with its face directed forwards. Mathematically, helicity is the sign of the projection of the spin vector onto the momentum vector: "left" is negative, "right" is positive.

  5. Spin model - Wikipedia

    en.wikipedia.org/wiki/Spin_model

    The study of the behavior of such "spin models" is a thriving area of research in condensed matter physics. For instance, the Ising model describes spins (dipoles) that have only two possible states, up and down, whereas in the Heisenberg model the spin vector is allowed to point in any direction.

  6. Spin-1/2 - Wikipedia

    en.wikipedia.org/wiki/Spin-1/2

    Spin-⁠ 1 / 2 ⁠ particles can have a permanent magnetic moment along the direction of their spin, and this magnetic moment gives rise to electromagnetic interactions that depend on the spin. One such effect that was important in the discovery of spin is the Zeeman effect , the splitting of a spectral line into several components in the ...

  7. Field (physics) - Wikipedia

    en.wikipedia.org/wiki/Field_(physics)

    In science, a field is a physical quantity, represented by a scalar, vector, or tensor, that has a value for each point in space and time. [1] [2] [3] An example of a scalar field is a weather map, with the surface temperature described by assigning a number to each point on the map.

  8. Scientific law - Wikipedia

    en.wikipedia.org/wiki/Scientific_law

    Scientific laws or laws of science are statements, based on repeated experiments or observations, that describe or predict a range of natural phenomena. [1] The term law has diverse usage in many cases (approximate, accurate, broad, or narrow) across all fields of natural science ( physics , chemistry , astronomy , geoscience , biology ).

  9. Spin wave - Wikipedia

    en.wikipedia.org/wiki/Spin_wave

    The combined effect of the two operators is therefore to propagate the rotated spin to a new position, which is a hint that the correct eigenstate is a spin wave, namely a superposition of states with one reduced spin. The exchange energy penalty associated with changing the orientation of one spin is reduced by spreading the disturbance over a ...