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A spectrum (plural spectra or spectrums) is a condition that is not limited to a specific set of values but can vary, without steps, across a continuum. The word was first used scientifically in optics to describe the rainbow of colors in visible light after passing through a prism. As scientific understanding of light advanced, it came to apply to the entire electromagnetic spectrum.
Spectrum has since been applied by analogy to topics outside optics. Thus, one might talk about the "spectrum of political opinion", or the "spectrum of activity" of a drug, or the "autism spectrum". In these uses, values within a spectrum may not be associated with precisely quantifiable numbers or definitions. Such uses imply a broad range of conditions or behaviors grouped together and studied under a single title for ease of discussion. Nonscientific uses of the term spectrum are sometimes misleading. For instance, a single left–right spectrum of political opinion does not capture the full range of people's political beliefs. Political scientists use a variety of biaxial and multiaxial systems to more accurately characterize political opinion.
In most modern usages of spectrum there is a unifying theme between the extremes at either end. This was not always true in older usage.

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  1. S

    Taurus Spectrum using CCI Blazer & high standard single shot new front site 25 yards

    looks like the fix is in with the primer strikes
  2. S

    Taurus Spectrum 380 still having lite strikes on primers at 31 yards

    looks like time to take it apart again
  3. S

    TAURUS 380 Spectrum first shots function test 1 fail to fire 30 yards Winchester ammo

    ok that was winchester basic ammo so it could of been a hard primmer
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