halation
英語
編輯詞源
編輯發音
編輯名詞
編輯halation (可數 和 不可數，複數 halations)
- 形成光暈
- 1912, William Hope Hodgson, The Derelict:
- She was, as you know, to the west-ward of us, and the sunset was making a great flame of red light to the back of her, so that she showed a little blurred and indistinct by reason of the halation of the light, which almost defeated the eye in any attempt to see her rotting spars and standing rigging, submerged, as they were, in the fiery glory of the sunset.
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- 照片底片或電視屏幕上的輪狀光暈
- 1901, E. & H.T. Anthony & Co., Anthony's photographic bulletin for ...[1], 第 32 卷，第 358 頁:
- As the result of a series of experiments on halation carried out with backed and unbacked plates, ordinary film and stripping film, Ernest Marriage concludes that there are two varieties of halation, one due to reflection from the support and the other due to spreading of the light in the film.
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- 1922, Arthur Conan Doyle, The Coming of the Fairies:
- Among other interesting and weighty opinions, which were in general agreement with our contentions, was one by Mr. H. A. Staddon of Goodmayes, a gentleman who had made a particular hobby of fakes in photography. His report is too long and too technical for inclusion, but, under the various headings of composition, dress, development, density, lighting, poise, texture, plate, atmosphere, focus, halation, he goes very completely into the evidence, coming to the final conclusion that when tried by all these tests the chances are not less than 80 per cent. in favour of authenticity.
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- 1954, Photography, Theory and Practice, Pitman, page 173,
- Halation can be prevented or diminished by using an absorbing layer between the sensitive emulsion and the support (anti-halo undercoat) or on the back of the support (anti-halo backing).