Spectral May 2026
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.
The word is also a common adjective for things that are ghostly or immaterial. Spectral Content - an overview | ScienceDirect Topics Spectral
In technical contexts, "spectral" refers to the distribution of a signal's properties, like energy or power, across different frequencies. The specific mix of wavelengths in a light source