| 释义 |
Definition of halation in English: halationnounhəˈleɪʃ(ə)nheɪˈleɪʃən mass nounThe spreading of light beyond its proper boundaries to form a fog round the edges of a bright image in a photograph or on a television screen. （照片中的）光晕，晕光；（电视中的）晕影 Example sentencesExamples - This gives normal contrast range with highlight halation.
- The Sabatier edge effects, which appear as white lines between areas of distinctly different densities, were proven (by Stevens and Norrish in 1937) to be the result of diffusion halation.
- With a regularity attributable to Therrien's use of templates, the forms share a richness and density and, often, a halation at each figure's thin edge.
- The function of pyrazolone derivative in silver halide photographic paper is as a filter to prevent halation and irradiation.
- If these are indeed the causes of halation, then I see no reason why halation should not also take place in a paper emulsion.
OriginMid 19th century: formed irregularly from halo + -ation. Rhymesablation, aeration, agnation, Alsatian, Amerasian, Asian, aviation, cetacean, citation, conation, creation, Croatian, counterdemonstration, counterproliferation, crustacean, curation, Dalmatian, delation, dilation, donation, duration, elation, fixation, Galatian, geolocation, glocalization, gyration, Haitian, Horatian, ideation, illation, lavation, legation, libation, location, lunation, mutation, natation, nation, negation, notation, nutation, oblation, oration, ovation, potation, relation, rogation, rotation, Sarmatian, sedation, Serbo-Croatian, station, staycation, taxation, Thracian, vacation, vexation, vocation, zonation Definition of halation in US English: halationnounheɪˈleɪʃənhāˈlāSHən The spreading of light beyond its proper boundaries to form a fog around the edges of a bright image in a photograph or on a television screen. （照片中的）光晕，晕光；（电视中的）晕影 Example sentencesExamples - The Sabatier edge effects, which appear as white lines between areas of distinctly different densities, were proven (by Stevens and Norrish in 1937) to be the result of diffusion halation.
- This gives normal contrast range with highlight halation.
- If these are indeed the causes of halation, then I see no reason why halation should not also take place in a paper emulsion.
- With a regularity attributable to Therrien's use of templates, the forms share a richness and density and, often, a halation at each figure's thin edge.
- The function of pyrazolone derivative in silver halide photographic paper is as a filter to prevent halation and irradiation.
OriginMid 19th century: formed irregularly from halo + -ation. |