Entertainment / Photography / Spectrum: Usually used in reference to the visible part of the electro-magnetic spectrum, i.e. The color bands produced by diffraction, and arranged according to wavelength, when white light is passed through a prism.
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Technology / Cell Phones / Spectrum Assignment: Federal government authorization for use of specific frequencies or frequency pairs within a given allocation, at specific geographic locations. MORE
Technology / Cell Phones / 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, accomplished i MORE
Science / Spiders / 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 power spectrum MORE
Technology / Cell Phones / Spectrum Cap: A limit to the allocated spectrum designated for a specific service. MORE
Technology / Cell Phones / Spread Spectrum: Initially devised for military use, this radio transmission technology spreads information over greater bandwidth than necessary to resist jamming and other interference. MORE
Science / Chemistry / 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 correlation MORE