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  2. Permanent account number - Wikipedia

    en.wikipedia.org/wiki/Permanent_account_number

    Application for new PAN Card or/and Changes or Corrections in PAN Data: - Those who have already have a PAN and wish to obtain the new PAN card or want to make some changes/corrections in their PAN data, are required to submit their applications in the following form prescribed by ITD: REQUEST FOR NEW PAN CARD OR/AND CHANGES OR CORRECTION IN ...

  3. Procedure word - Wikipedia

    en.wikipedia.org/wiki/Procedure_word

    The word "REPEAT" should not be used in place of "SAY AGAIN", especially in the vicinity of naval or other firing ranges, as "REPEAT" is an artillery proword defined in ACP 125 U.S. Supp-2(A) with the wholly different meaning of "request for the same volume of fire to be fired again with or without corrections or changes" (e.g., at the same ...

  4. Correction fluid - Wikipedia

    en.wikipedia.org/wiki/Correction_fluid

    A correction fluid is an opaque, usually white fluid applied to paper to mask errors in text. Once dried, it can be handwritten or typed upon. It is typically packaged in small bottles, with lids attached to brushes (or triangular pieces of foam) that dip into the fluid. The brush applies the fluid to the paper.

  5. Pan evaporation - Wikipedia

    en.wikipedia.org/wiki/Pan_evaporation

    Pan evaporation is a measurement that combines or integrates the effects of several climate elements: temperature, humidity, rain fall, drought dispersion, solar radiation, and wind. Evaporation is greatest on hot, windy, dry, sunny days; and is greatly reduced when clouds block the sun and when air is cool, calm, and humid. [1]

  6. Distortion (optics) - Wikipedia

    en.wikipedia.org/wiki/Distortion_(optics)

    Distortion (optics) In geometric optics, distortion is a deviation from rectilinear projection; a projection in which straight lines in a scene remain straight in an image. It is a form of optical aberration .

  7. Ration card (India) - Wikipedia

    en.wikipedia.org/wiki/Ration_card_(India)

    t. e. Ration cards are an official document issued by state governments in India to households that are eligible to purchase subsidised food grain from the Public Distribution System under the National Food Security Act (NFSA). They also serve as a common form of identification for many Indians. [1] Under the NFSA, all state governments in ...

  8. Optical proximity correction - Wikipedia

    en.wikipedia.org/wiki/Optical_proximity_correction

    Optical proximity correction (OPC) is a photolithography enhancement technique commonly used to compensate for image errors due to diffraction or process effects. The need for OPC is seen mainly in the making of semiconductor devices and is due to the limitations of light to maintain the edge placement integrity of the original design, after ...

  9. Correction tape - Wikipedia

    en.wikipedia.org/wiki/Correction_tape

    Using a correction tape. Correction tape is an alternative to correction fluid used to correct mistakes during typing, or, in some forms, handwriting. One side of the tape, which is placed against the area to cover, is coated in a white, opaque masking material.

  10. Brake (sheet metal bending) - Wikipedia

    en.wikipedia.org/wiki/Brake_(sheet_metal_bending)

    A brake is a metalworking machine that allows the bending of sheet metal. A cornice brake only allows for simple bends and creases, while a box-and-pan brake also allows one to form box and pan shapes. It is also known as a bending machine or bending brake or in Britain as a sheet metal folder or just a folder .

  11. Polyacrylonitrile - Wikipedia

    en.wikipedia.org/wiki/Polyacrylonitrile

    Polyacrylonitrile ( PAN) is a synthetic, semicrystalline organic polymer resin, with the linear formula (CH 2 CHCN) n. [2] Almost all PAN resins are copolymers with acrylonitrile as the main monomer. PAN is used to produce large variety of products including ultra filtration membranes, hollow fibers for reverse osmosis, fibers for textiles, and ...