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  2. Pantograph - Wikipedia

    en.wikipedia.org/wiki/Pantograph

    Drafting pantograph in use Pantograph used for scaling a picture. The red shape is traced and enlarged. Pantograph 3d rendering. A pantograph (from Greek παντ- 'all, every' and γραφ- 'to write', from their original use for copying writing) is a mechanical linkage connected in a manner based on parallelograms so that the movement of one pen, in tracing an image, produces identical ...

  3. File:Francis Galton's pantograph.jpg - Wikipedia

    en.wikipedia.org/wiki/File:Francis_Galton's...

    Language links are at the top of the page across from the title.

  4. Pantograph (transport) - Wikipedia

    en.wikipedia.org/wiki/Pantograph_(transport)

    The diamond-shaped, electric-rod pantograph of the Swiss cogwheel locomotive of the Schynige Platte railway in Schynige Platte, built in 1911 Cross-arm pantograph of a Toshiba EMU. A pantograph (or "pan" or "panto") is an apparatus mounted on the roof of an electric train, tram or electric bus [1] to collect power through contact with an ...

  5. List of Indian inventions and discoveries - Wikipedia

    en.wikipedia.org/wiki/List_of_Indian_inventions...

    High-Rise Pantograph – The new-design world record pantograph, developed completely in-house for use in DFC & other freight routes with height of 7.5 metres (25 ft). [306] Commercial CCU plant: Tuticorin Alkali Chemicals and Fertilizers Limited (TFL) partnered with Carbon Clean to create the world's first fully commercial CCU plant.

  6. File:Pantograph in action.svg - Wikipedia

    en.wikipedia.org/wiki/File:Pantograph_in_action.svg

    to share – to copy, distribute and transmit the work; to remix – to adapt the work; Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.

  7. Photographic processing - Wikipedia

    en.wikipedia.org/wiki/Photographic_processing

    An example of a black and white developer is Kodak D-76 which has bis(4-hydroxy-N-methylanilinium) sulfate with hydroquinone and sodium sulfite. In graphic art film, also called lithographic film which is a special type of black and white film used for converting images into halftone images for offset printing, a developer containing methol ...

  8. Photochemistry - Wikipedia

    en.wikipedia.org/wiki/Photochemistry

    Photoexcitation is the first step in a photochemical process where the reactant is elevated to a state of higher energy, an excited state.The first law of photochemistry, known as the Grotthuss–Draper law (for chemists Theodor Grotthuss and John W. Draper), states that light must be absorbed by a chemical substance in order for a photochemical reaction to take place.

  9. Atomic layer deposition - Wikipedia

    en.wikipedia.org/wiki/Atomic_layer_deposition

    During atomic layer deposition, a film is grown on a substrate by exposing its surface to alternate gaseous species (typically referred to as precursors or reactants). In contrast to chemical vapor deposition, the precursors are never present simultaneously in the reactor, but they are inserted as a series of sequential, non-overlapping pulses.