An Etymological Dictionary of Astronomy and Astrophysics
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The minimum number of resolution elements required to properly sample a signal, such as a star image, without causing erroneous effects known as aliasing. For electronic imaging, this number is generally taken as 2 pixels across the seeing disk diameter at the half intensity points. Also called → Shannon's sampling theorem and → sampling theorem.

Named after Harry Nyquist (1889-1976), a Swedish-born American physicist, who made important contributions to information theory, and Claude Elwood Shannon (1916-2001), an American mathematician and pioneer of information theory; → theorem.

Same as → Nyquist-Shannon sampling theorem.

→ sampling; → theorem.

Same as → sampling theorem.

→ Shannon entropy; → sampling; → theorem.