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Geometric factors (rt)
| Глоссарий терминов по технологиям неразрушающего контроля (NDT) |
General term used to describe the factors in radiographic exposures that account for distortion and/or enlargement. some of the more common geometric factors include focal spot size, specimen thickness, and source-to-film distance.
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Radiographic, английский
Distortion, английский
- A drying defect caused by the differential shrinkage along the three axes of a piece of wood. distortion may take the form of cup, bow, twist, spring or diamonding.
- Искажение, дисторсия
- The deviation of the received signal waveform from that of the original transmitted waveform.
- Nonproportional representation of an original.
- Искажение (формы); коробление
- Нарушение достоверности информации, см. bias; error, deviation, misreporting запасы (сырья и материалов), см. stocks with industrial consumers; reserves for manufacturing purposes al consumers; reserves for manufacturing purposes 61,. distributed stocks (of raw materials) — производственные запасы (сырья и материалов), см. stocks with industrial consumers; reserves for manufacturing purposes.
- An undesired change in wave form of a signal in the course of its passage through a transmission system.
- An off-axis lens aberration that changes the geometric shape of the image due to a variation of focal length as a function of field angle.
- Any changing of line, form, or even light by photographic materials, such as lenses, films, or filters. though most designers do all they can to eliminate distortion from lenses, most photographers take the "if you can`t beat `em, join `em" approach and exploit it wherever they find it; they use distortion as part of their visual expression.
- An aberration which occurs as light rays move from the center of the lens toward the periphery. as rays approach the edge, the lens’s increasing magnification causes a distorting of the image.
- The act of twisting part of the body out of its usual shape
- Искажение
- N псхл. искажение
- Расхождение; несовпадение; искажение; искривление
- An intentional desired, or unintentional unwanted, change in the audio waveform, causing a raspy or edgy sound quality.
- Changing incoming information in some way.
Enlargement, английский
- Making a print from a negative or slide; generally, making a print larger than standard size, such as an 8x10-inch or bigger "blowup".
- Расширение
- Увеличение
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Lead glass (rt), английский
Glass containing a high proportion of lead compounds, used as a transparent shielding material.
Self-absorption, английский
Gamma ray emission from large sources wherein the gamma radiation emitted from the center of the source will be appreciably absorbed by the outer layers of the source material.
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