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  2. Stadia mark - Wikipedia

    en.wikipedia.org/wiki/Stadia_mark

    For example, a typical stadia mark pair are set so that the ratio is 100. If one observes a vertical length on a stadia rod, rule or levelling rod with the telescope and sees that the rod spans 0.500 m between the marks (the stadia interval), then the horizontal distance from the instrument to the rod is: 0.500m x 100 = 50 m.

  3. Product differentiation - Wikipedia

    en.wikipedia.org/wiki/Product_differentiation

    Product differentiation. In economics and marketing, product differentiation (or simply differentiation) is the process of distinguishing a product or service from others to make it more attractive to a particular target market. This involves differentiating it from competitors ' products as well as from a firm's other products.

  4. Moiré pattern - Wikipedia

    en.wikipedia.org/wiki/Moiré_pattern

    Consider two patterns made of parallel and equidistant lines, e.g., vertical lines. The step of the first pattern is p , the step of the second is p + δp , with 0 < δp < p . If the lines of the patterns are superimposed at the left of the figure, the shift between the lines increases when going to the right.

  5. Rule of thirds - Wikipedia

    en.wikipedia.org/wiki/Rule_of_thirds

    The tree is at the intersection of two lines, sometimes called a power point[ 1] or a crash point. [ 2] The rule of thirds is a "rule of thumb" for composing visual images such as designs, films, paintings, and photographs. [ 3] The guideline proposes that an image should be imagined as divided into nine equal parts by two equally spaced ...

  6. Glossary of mathematical symbols - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_mathematical...

    3. Between two groups, may mean that the first one is a proper subgroup of the second one. > (greater-than sign) 1. Strict inequality between two numbers; means and is read as "greater than". 2. Commonly used for denoting any strict order. 3. Between two groups, may mean that the second one is a proper subgroup of the first one. ≤ 1.

  7. Product line extension - Wikipedia

    en.wikipedia.org/wiki/Product_line_extension

    Product line extensions are a process where companies with an established brand alter the factors of a product or products to satisfy a refined segment in the market. [ 1] There are two types of product line extensions, horizontal and vertical. Horizontal extensions consist of keeping the price and quality consistent, but changing factors like ...

  8. Time - Wikipedia

    en.wikipedia.org/wiki/Time

    Time is the continued sequence of existence and events that occurs in an apparently irreversible succession from the past, through the present, and into the future. [1] [2] [3] It is a component quantity of various measurements used to sequence events, to compare the duration of events or the intervals between them, and to quantify rates of change of quantities in material reality or in the ...

  9. Image tracing - Wikipedia

    en.wikipedia.org/wiki/Image_tracing

    If the image is of a fill-in form, then it will probably have just vertical and horizontal lines of a constant width. The program's vectorization should take that into account. On the other hand, a CAD drawing may have lines at any angle, there may be curved lines, and there may be several line weights (thick for objects and thin for dimension ...