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  2. List of duplicating processes - Wikipedia

    en.wikipedia.org/wiki/List_of_duplicating_processes

    Carbonless copy paper; Photographic processes: Reflex copying process (also reflectography, reflexion copying) Breyertype, Playertype, Manul Process, Typon Process, Dexigraph, Linagraph; Daguerreotype; Salt print; Calotype (the first photo process to use a negative, from which multiple prints could be made) Cyanotype; Photostat machine; Rectigraph

  3. Carbon copy - Wikipedia

    en.wikipedia.org/wiki/Carbon_copy

    A copy made with carbon paper. Before the development of photographic copiers, a carbon copy was the under-copy of a typed or written document placed over carbon paper and the under-copy sheet itself (not to be confused with the carbon print family of photographic reproduction processes). [1]

  4. Duplicating machines - Wikipedia

    en.wikipedia.org/wiki/Duplicating_machines

    Using letter copying presses, copies could be made up to twenty-four hours after a letter was written, though copies made within a few hours were best. A copying clerk would begin by counting the number of master letters to be written during the next few hours and by preparing the copying book. Suppose the clerk wanted to copy 20 one-page letters.

  5. Mimeograph - Wikipedia

    en.wikipedia.org/wiki/Mimeograph

    The process was called mimeography, and a copy made by the process was a mimeograph. Mimeographs, along with spirit duplicators and hectographs, were common technologies for printing small quantities of a document, as in office work, classroom materials, and church bulletins.

  6. Carbon paper - Wikipedia

    en.wikipedia.org/wiki/Carbon_paper

    A sheet of carbon paper, with the coating side down Handwriting duplicated through carbon paper. Carbon paper (originally carbonic paper) consists of sheets of paper that create one or more copies simultaneously with the creation of an original document when inscribed by a typewriter or ballpoint pen. The email term cc which means ‘carbon ...

  7. Cross-coupling reaction - Wikipedia

    en.wikipedia.org/wiki/Cross-coupling_reaction

    This intermediate L n MR(R') is formed in a two step process from a low valence precursor L n M. The oxidative addition of an organic halide (RX) to L n M gives L n MR(X). Subsequently, the second partner undergoes transmetallation with a source of R' − .

  8. Biological carbon fixation - Wikipedia

    en.wikipedia.org/wiki/Biological_carbon_fixation

    Biological carbon fixation, or сarbon assimilation, is the process by which living organisms convert inorganic carbon (particularly carbon dioxide, CO 2) to organic compounds. These organic compounds are then used to store energy and as structures for other biomolecules .

  9. Climate change video game - Wikipedia

    en.wikipedia.org/wiki/Climate_change_video_game

    Carbon City Zero [23] is a global warming game published by the climate action charity Possible in January 2021.The game is a collaborative deck-building card game for 1–4 people in which players take on the role of city mayors working to develop sustainable cities by greening transport, transforming industries, and getting their citizens on ...

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