Spectral

The specific mix of wavelengths in a light source. This is used in astronomy to determine what stars are made of or how fast they are moving.

In technical contexts, "spectral" refers to the distribution of a signal's properties, like energy or power, across different frequencies. Spectral

The word is also a common adjective for things that are ghostly or immaterial. Spectral Content - an overview | ScienceDirect Topics The specific mix of wavelengths in a light source

This is the distribution of power over a frequency range, often described using Power Spectral Density (PSD) . It helps engineers see where the "strength" of a signal lies. Light and Imaging: like energy or power