Phrase guide
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noun
A feature in astronomical spectrometry of distant light, caused by the Reionization Era's absorption of UV light, leaving a gap in the spectrum.
Definition source: English Wiktionary via Wiktextract
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Synonyms: none provided
Antonyms: none provided
History
From the theoreticians who predicted this effect, astronomers James E. Gunn and Bruce Peterson, which creates a lack of radiation at a span of wavelengths.
