continuum, wavelength, frequency, range, gamut, spectral, broad, bandwidth, variety, waveband, more...

uniformity, monotony, sameness, homogeneity, similarity

visible spectrum, infrared spectrum, X-ray spectrum, gamma ray spectrum, more...

broad, wide, political, visible, continuous, entire, whole, electromagnetic, solar, full, infrared

a range of,   range of,   broad range,   a of colors,   a range,   a wide range,   the full gamut,   the whole gamut,   wider range,   part of a rainbow