In medicine, spectral features are used to analyze brain waves (EEG) for tasks like sleep staging. 2. Film and Fiction (The Ghostly)
The word is also a common adjective for things that are ghostly or immaterial. Spectral Content - an overview | ScienceDirect Topics 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 medicine, spectral features are used to analyze
The ability of a sensor (like a camera) to distinguish between different wavelengths of light, such as infrared or ultraviolet, beyond what the human eye can see. Spectral Content - an overview | ScienceDirect Topics
In technical contexts, "spectral" refers to the distribution of a signal's properties, like energy or power, across different frequencies.
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: