Each fluorochrome has a broad fluorescence spectrum. White light is a combination of lights of different wavelengths in the visible spectrum. Many species can see light within frequencies outside the human "visible spectrum". Many species can see light with frequencies outside the human "visible spectrum". Bands of frequencies in the microwave spectrum are designated by letters. These polarization detectors are sensitive in the ultraviolet region of the light spectrum. These photoreceptor types respond to different degrees across the visible electromagnetic spectrum. Parabens are active against a broad spectrum of microorganisms. This was the first indication of the existence of the entire electromagnetic spectrum. Hyperspectral sensors look at objects using a vast portion of the electromagnetic spectrum. Each element has a different atomic spectrum. There was no expression or explanation for the overall shape of the observed emission spectrum. This glow is strongest in the microwave region of the radio spectrum. Ronstadt had major success interpreting songs from a diverse spectrum of artists. These lines are brighter than the continuous spectrum.