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  2. Parts-per notation - Wikipedia

    en.wikipedia.org/wiki/Parts-per_notation

    At 10 000 ppm the solution is a deep red colour. As the concentration decreases the colour becomes orange, then a vibrant yellow, with the final 1 ppm sample a very pale yellow. In science and engineering , the parts-per notation is a set of pseudo-units to describe small values of miscellaneous dimensionless quantities , e.g. mole fraction or ...

  3. PPM - Wikipedia

    en.wikipedia.org/wiki/PPM

    Parts-per-million, ppm Carbon dioxide in Earth's atmosphere, CO 2 ppm; Peak programme meter, measuring audio level; Planned Preventative Maintenance of equipment; PPM Star Catalogue of 378,910 stars' positions and proper motions; Proton precession magnetometer, measures small magnetic field variations; Pulse-position modulation of a signal

  4. Form and content - Wikipedia

    en.wikipedia.org/wiki/Form_and_content

    Content, on the other hand, refers to a work's subject matter, i.e., its meaning. [2] [3] But the terms form and content can be applied not only to art: every meaningful text has its inherent form, hence form and content appear in very diverse applications of human thought: from fine arts to even mathematics and natural sciences. Even more, the ...

  5. Total dissolved solids - Wikipedia

    en.wikipedia.org/wiki/Total_dissolved_solids

    Total dissolved solids (TDS) is a measure of the dissolved combined content of all inorganic and organic substances present in a liquid in molecular, ionized, or micro-granular (colloidal sol) suspended form. TDS are often measured in parts per million (ppm). TDS in water can be measured using a digital meter. [1]

  6. List of Latin abbreviations - Wikipedia

    en.wikipedia.org/wiki/List_of_Latin_abbreviations

    "in the matter of", "concerning" Often used to prefix the subject of traditional letters and memoranda. However, when used in an e-mail subject, there is evidence that it functions as an abbreviation of "reply" rather than the word meaning "in the matter of". Nominative case singular 'res' is the Latin equivalent of 'thing'; singular 're' is ...

  7. Biomagnification - Wikipedia

    en.wikipedia.org/wiki/Biomagnification

    For example, herring contains mercury at approximately 0.01 parts per million (ppm) and shark contains mercury at greater than 1 ppm. [6] DDT is a pesticide known to biomagnify, which is one of the most significant reasons it was deemed harmful to the environment by the EPA and other organizations. DDT is one of the least soluble chemicals ...

  8. The Romantic Manifesto - Wikipedia

    en.wikipedia.org/wiki/The_Romantic_Manifesto

    Photography, for example, is invalid to her (qua art form) because a camera merely records the world exactly as it is and has very limited, if any, capacity to carry a moral message beyond the photographer's choice of subject matter. Art, to her, should always strive to elevate and idealize the human spirit.

  9. Outline of books - Wikipedia

    en.wikipedia.org/wiki/Outline_of_books

    Monograph – a book on a single subject or an aspect of a subject, usually by a single author; Networked book or Open book – a book that is written, edited, and read in a networked environment (such as Wikipedia) Novelization – a book that adapts the story of a work created for another medium, such as a film, TV series, comic strip or ...