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Magnitude vs Lightlike - What's the difference?

magnitude | lightlike |

In mathematics|lang=en terms the difference between magnitude and lightlike

is that magnitude is (mathematics) of a vector, the norm, most commonly, the two-norm while lightlike is (mathematics) (of a four-vector ) having a space component whose magnitude is equal to its time component multiplied by the speed of light.

As a noun magnitude

is (uncountable|countable) the absolute or relative size, extent or importance of something.

As an adjective lightlike is

(mathematics) (of a four-vector ) having a space component whose magnitude is equal to its time component multiplied by the speed of light.

magnitude

English

Noun

  • (uncountable, countable) The absolute or relative size, extent or importance of something.
  • (countable) An order of magnitude.
  • (mathematics) A number, assigned to something, such that it may be compared to others numerically
  • (mathematics) Of a vector, the norm, most commonly, the two-norm.
  • (astronomy) The apparent brightness of a star (on a negative, logarithmic scale); apparent magnitude
  • (seismology) A measure of the energy released by an earthquake (e.g. on the Richter scale).

    • Derived terms

    * order of magnitude * absolute magnitude * apparent magnitude

    lightlike

    English

    Adjective

    (en adjective)
  • (mathematics) (of a four-vector ) having a space component whose magnitude is equal to its time component multiplied by the speed of light

    • See also

    * spacelike * timelike