Related Words

Spectrum: A range of frequencies available for over-the-air transmission.

Band Spectrum: Compare with line spectrum and continuous spectrum. An emission spectrum that contains groups of sharp peaks that are so close together that they are not distinguishable separately, but only . . . View Full Definition

Spectrum Cap: A limit to the allocated spectrum designated for a specific service.

Absorption Spectrum: A plot that shows how much radiation a substance absorbs at different wavelengths. Absorption spectra are unique for each element and compound and they are often used as chemical 'fingerprin . . . View Full Definition

Line Spectrum: A emission spectrum that contains very sharp peaks, corresponding to transitions between states in free atoms. For example, the line spectrum of hydrogen contains 4 sharp lines in the visibl . . . View Full Definition

White Light Spectrum: Is the electromagnetic wavelengths between 400-700 nanometers. Also referred to as the visible spectrum.

X-Ray Spectrum: A set of characteristic x-ray frequencies or wavelengths produced by a substance used as a target in an x-ray tube. Each element has a characteristic x-ray spectrum, and there is a strong co . . . View Full Definition

Electromagnetic Spectrum: The band of electromagnetic radiation with components that are separated into their relative wave lengths. The portion of the spectrum that the human eye can detect is called visible light, . . . View Full Definition

Power Spectrum: intensity [= squared amplitude] of the Fourier transform, presented either in the form of an image (= the outcome of the PW operation) or as a profile (= the outcome of averaging the 2D powe . . . View Full Definition

Spectrum Allocation: Federal government assignment of a range of frequencies for a category of use or uses. For example, the FCC allocated the 1900 MHz band for personal communications services. Allocation, acco . . . View Full Definition