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Effective focal length
| Словарь терминов и сокращений в авиации |
- Эффективное фокусное расстояние
- A series of parallel rays entering a positive lens will be bent toward the optical axis and brought to a focus, “focal point”. if the entering and exiting rays are extended to their intersection points, these points form the lens’ “principal plane”. the intersection of the principal plane with the optical axis is the “principal point” of the lens. the “” (efl) of the lens is the distance from the principal point to the focal point. tel 203•377•8282 fax 203•378•2457 e-mail res_sales@oriel.com url www.oriel.com the following three pages briefly define the optical terms used most frequently in the preceding lens theory section, and throughout this catalog. these definitions are limited to the context in which the terms are used in this catalog. entering rays exiting rays ? = object angle y = image size k principal plane principal point yk ?0 effective focal length (efl) efl yk tan ?0 = lens lens focal point fig. 1 the efl of a lens is equal to the image size divided by
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Efl, английский
- Effective focal length
- Максимальная (допустимая) частота однобитовых ошибок; предельная частота ошибок; наибольшая допустимая частота ошибок
- Entry flight level
- Estimated flight level
- English as a foreign language. now usually esol or esl.
- External financing limit
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Расстояние, русский
- Расстояние, промежуток, отдаление, дистанция. стоять на приличной дистанции. "он держался в гордом отдалении от прочих". тург. отступив от дома на пять сажен (на расстоянии пяти сажен от дома). "купель сия, по словам даниила, находится на в
- , геометрическое понятие, содержание которого зависит от того, для каких объектов оно определяется. напр., расстояние между двумя точками - длина соединяющего их отрезка прямой, расстояние от точки до прямой (или плоскости) - длина отрезка перпендикуляра, опущенного на данную прямую (плоскость).
Intersection, английский
- The intersection of two or more sets is the set of elements that all the sets have in common; the elements contained in every one of the sets. the intersection of the events a and b is written "a∩b," "a and b," and "ab." c.f. union. see also venn diagrams.
- Пересечение
- N пересечение (ант. non-intersection) intersemiotic a межсемиотический translation intersentential a между предложениями (ант. intrasentential) linkage
- The point in which one line crosses another.
- The point at which a deliberate deflection of the trend of a borehole is made.
- The point at which a drill hole enters a specific ore body, fault, or rock material.
- Meeting of two ore bodies or veins, or the point at which a vein or ore body meets a fault, dike or rock strata. 4. the point at which two underground workings connect.
- The intersection of two sets, a and b — written as a b — is a set containing all elements in both a and b. it is also a lisp function that takes two lists as arguments and returns a list containing the elements common to both arguments. see also: list, lisp, union.
Frequently, английский
Frecuentemente
Throughout, английский
Definitions, английский
Files that are used to help detect harmful or unwanted software and to prevent it from installing or running on your computer.
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Expect further routing, английский
Ожидай те дальнейших указаний о маршруте
Efl, английский
- Effective focal length
- Максимальная (допустимая) частота однобитовых ошибок; предельная частота ошибок; наибольшая допустимая частота ошибок
- Entry flight level
- Estimated flight level
- English as a foreign language. now usually esol or esl.
- External financing limit
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