The phrase "a continuous spectra of" is not correct in standard English; it should be "a continuous spectrum of." You can use it when discussing a range of related qualities, characteristics, or phenomena that are not discrete but rather form a seamless transition.
Example: "The artist's work reflects a continuous spectrum of emotions, from joy to despair."
Alternatives: "a continuous range of" or "a seamless array of".
During this abrupt deceleration, the beam electrons emit bremsstrahlung (German: "braking radiation")—a continuous spectrum of electromagnetic radiation with a peak intensity in the X-ray region.
We seem ill-equipped to deal mentally with a continuous spectrum of intermediates.
An observable with a continuous spectrum of measured values has an infinite number of state functions.
The mathematics of observables with a continuous spectrum of measured values is somewhat more complicated than for the discrete case but presents no problems of principle.
Since electrons are much lighter than atoms, irregular thermal motion produces irregular oscillatory charge motion, which reflects a continuous spectrum of frequencies.
This model has been useful in understanding electromagnetic properties, including the fact that any internal magnetic flux in superconductors exists only in discrete amounts (instead of in a continuous spectrum of values), an effect called the quantization of magnetic flux.
The domain mapping technique employed yields a continuous spectrum of unconventional closed cross-sectional shapes.
Classical retaining structures and conventional reinforced soil designs are limiting points of a continuous spectrum of potential solutions.
With a variation of the modeling scales, theoretically there should have a continuous spectrum of fluid dynamic equations.
Three-dimensional MR lymphography demonstrates that retroperitoneal lymphatic aneurysmal dilatation exhibits a continuous spectrum of change from normal variants to lymphatic aneurysmal dilatation and so-called cystic lymphangioma.
