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  2. Transparency (projection) - Wikipedia

    en.wikipedia.org/wiki/Transparency_(projection)

    Overhead projector in operation, with a transparency being flashed. A transparency, also known variously as a viewfoil or foil (from the French word "feuille" or sheet), or viewgraph, is a thin sheet of transparent flexible material, typically polyester (historically cellulose acetate), onto which figures can be drawn.

  3. Overhead projector - Wikipedia

    en.wikipedia.org/wiki/Overhead_projector

    An overhead projector (often abbreviated to OHP), like a film or slide projector, uses light to project an enlarged image on a screen, allowing the view of a small document or picture to be shared with a large audience.

  4. Pre-determined overhead rate - Wikipedia

    en.wikipedia.org/wiki/Pre-determined_overhead_rate

    A pre-determined overhead rate is normally the term when using a single, plant-wide base to calculate and apply overhead. Overhead is then applied by multiplying the pre-determined overhead rate by the actual driver units. Any difference between applied overhead and the amount of overhead actually incurred is called over- or under-applied overhead.

  5. Overhead press - Wikipedia

    en.wikipedia.org/wiki/Overhead_press

    The weight is then pressed overhead. [3] While the exercise can be performed standing or seated, standing recruits more muscles as more balancing is required in order to support the lift. [4] Other variations of the exercise include the push press, a similar movement that involves an additional dipping motion in the legs to increase momentum. [1]