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www.phys.ncku.edu.tw為NA， 及光圈數(f-number)(或叫相對孔徑(relative aperture))， 簡寫為FNB。 數值孔徑由下式定義：. 0 sinθ n. NA = （ 2.17）. 其中， n 是折射率。 光圈數(f-number)由 ...瀏覽：775
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日期：2024-05-18
J-A B C D E F G H I J K L M N O P Q R S T U V W X Y Z | Top Japanophobia- Fear of Japanese. Judeophobia- Fear of Jews. K-A B C D E F G H I J K L M N O P Q R S T U V W X Y Z | Top Kainolophobia or Kainophobia- Fear of anything new, novelty....
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日期：2024-05-19
or (often, in modern usage): (sequence A000045 in OEIS). The Fibonacci spiral: an approximation of the golden spiral created by drawing circular arcs connecting the opposite corners of squares in the Fibonacci tiling;[3] this one uses squares of sizes 1, ...
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日期：2024-05-18
Aperture, shutter speed, and film sensitivity are linked: for constant scene
brightness, ... 0.7, 1.0, 1.4, 2, 2.8, 4, 5.6, 8, 11, 16, 22, 32, 45, 64, 90, 128, 180,
256 ......
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日期：2024-05-21
數值孔徑( numerical aperture )以符號N.A. 表示，通常用於定值成像系統中。我們
定義N.A. 為. N.A. = nsinψ. N.A.值與F-number都是描述系統光通量的物理量，對
一個 ......
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日期：2024-05-23
In optics, the f-number (sometimes called focal ratio, f-ratio, f-stop, or relative aperture[1]) of an optical system is the ratio of the lens's focal length to the diameter of the entrance pupil.[2] It is a dimensionless number that is a quantitative mea...
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日期：2024-05-19
Official presidential library in Boston, with exhibits on John and Robert Kennedy....
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日期：2024-05-18
ISRCTN registry The ISRCTN registry is a primary clinical trial registry recognised by WHO and ICMJE that accepts all clinical research studies (whether proposed, ongoing or completed), providing content validation and curation and the unique identificati...
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日期：2024-05-21
Daily Box Office Results for Sunday, January 4, 2015 ... * Ranked by selected day. Click on the day at the top of the chart to sort by that day. NOTE: If daily grosses stop for a movie, it means that the respective studio is no longer tracking it on a dai...
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