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  2. Optical Density - Wikipedia

    en.wikipedia.org/?title=Optical_Density&redirect=no

    This page was last edited on 18 November 2013, at 15:41 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.

  3. Densitometry - Wikipedia

    en.wikipedia.org/wiki/Densitometry

    DMax and DMin refer to the maximum and minimum density that can be produced by the material. The difference between the two is the density range. [1] The density range is related to the exposure range (dynamic range), which is the range of light intensity that is represented by the recording, via the Hurter–Driffield curve.

  4. Absorbance - Wikipedia

    en.wikipedia.org/wiki/Absorbance

    τ ν is the spectral optical depth in frequency, and; τ λ is the spectral optical depth in wavelength. Although absorbance is properly unitless, it is sometimes reported in "absorbance units", or AU. Many people, including scientific researchers, wrongly state the results from absorbance measurement experiments in terms of these made-up ...

  5. Talk:Optical density - Wikipedia

    en.wikipedia.org/wiki/Talk:Optical_density

    AFAIK, optical density was originally defined by Hurter and Driffield as D = log10(O) to indicate the amount of an opaque substance suspended in a transparent medium: "For our purposes, i.e., in its application to negatives, the density is directly proportional to the amount of silver deposited per unit area, and may be used as a measure of ...

  6. Central Vietnam - Wikipedia

    en.wikipedia.org/wiki/Central_Vietnam

    North Central Coast (Bắc Trung Bộ) Hà Tĩnh Nghệ An Quảng Bình Quảng Trị Thanh Hóa Huế † 51,242.75 11,190,830 218.39 contains the coastal provinces in the northern half of Vietnam's narrow central part. They all stretch from the coast in the east to Laos in the west. South Central Coast (Duyên hải Nam Trung Bộ) Bình Định

  7. Sino-Vietnamese vocabulary - Wikipedia

    en.wikipedia.org/wiki/Sino-Vietnamese_vocabulary

    Sino-Vietnamese vocabulary (Vietnamese: từ Hán Việt, Chữ Hán: 詞漢越, literally 'Chinese-Vietnamese words') is a layer of about 3,000 monosyllabic morphemes of the Vietnamese language borrowed from Literary Chinese with consistent pronunciations based on Middle Chinese.

  8. Optical depth - Wikipedia

    en.wikipedia.org/wiki/Optical_depth

    Spectral optical depth or spectral optical thickness is the natural logarithm of the ratio of incident to transmitted spectral radiant power through a material. [1] Optical depth is dimensionless , and in particular is not a length, though it is a monotonically increasing function of optical path length , and approaches zero as the path length ...

  9. Quảng Bình province - Wikipedia

    en.wikipedia.org/wiki/Quảng_Bình_province

    Off the sea, there lie Hòn La islet, Hòn Gió islet, Hòn Nồm islet, Hòn Cỏ islet, Hòn Chùa islets with the total fishery capacity of 100,000 metric tonnes. Hòn La bay is a 4-square-km marine bay with the depth up to 15 m and a surrounding land of 4 km 2 suitable to develop sea deep-water port and industrial park. [citation needed]