Before revision: In natural science and signal processing, an artifact or URL is any error in the perception or representation of any information introduced by the involved equipment or technique(s).See Dictionary.com, definitions 4, 5, and 6.
After revision: In natural science and signal processing, an artifact or artefact is any error in the perception or representation of any information introduced by the involved equipment or technique(s).See Dictionary.com, definitions 4, 5, and 6.