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  2. Durability - Wikipedia

    en.wikipedia.org/wiki/Durability

    Durability is the ability of a physical product to remain functional, without requiring excessive maintenance or repair, when faced with the challenges of normal operation over its design lifetime. [ 1 ] : 5 There are several measures of durability in use, including years of life, hours of use, and number of operational cycles. [ 2 ]

  3. Durable good - Wikipedia

    en.wikipedia.org/wiki/Durable_good

    A car is a durable good. The gasoline that powers it is a non-durable (or consumable) good.. In economics, a durable good or a hard good or consumer durable is a good that does not quickly wear out or, more specifically, one that yields utility over time rather than being completely consumed in one use.

  4. Science fair - Wikipedia

    en.wikipedia.org/wiki/Science_fair

    A science fair or engineering fair is an event hosted by a school that offers students the opportunity to experience the practices of science and engineering for themselves. In the United States, the Next Generation Science Standards makes experiencing the practices of science and engineering one of the three pillars of science education.

  5. Wear and tear - Wikipedia

    en.wikipedia.org/wiki/Wear_and_tear

    Durable goods (e.g., automobiles, heavy machinery, mainframe computers, musical instruments, handguns, water heaters, furnaces) are designed with wear parts that are maintained generally by replacement of parts. One way to determine if a good is durable or not is whether a service technician or repairman would

  6. Coase conjecture - Wikipedia

    en.wikipedia.org/wiki/Coase_conjecture

    The Coase conjecture, developed first by Ronald Coase, is an argument in monopoly theory.The conjecture sets up a situation in which a monopolist sells a durable good to a market where resale is impossible and faces consumers who have different valuations.

  7. Product lifetime - Wikipedia

    en.wikipedia.org/wiki/Product_lifetime

    It is also different from product economic life which refers to the point where maintaining a product is more expensive than replacing it; [2] from product technical life which refers to the maximum period during which a product has the physical capacity to function; [3] and from the functional life which is the time a product should last ...

  8. Eight dimensions of quality - Wikipedia

    en.wikipedia.org/wiki/Eight_dimensions_of_quality

    Durability measures the length of a product’s life. When the product can be repaired, estimating durability is more complicated. As well The item will be used until it is no longer economical to operate it. This happens when the repair rate and the associated costs increase significantly.

  9. Definitions of economics - Wikipedia

    en.wikipedia.org/wiki/Definitions_of_economics

    Economics is a science which studies human behaviour as a relationship between ends and scarce means which have alternative uses. [ 9 ] Robbins describes the definition as not classificatory in "pick[ing] out certain kinds of behaviour" but rather analytical in "focus[ing] attention on a particular aspect of behaviour, the form imposed by the ...

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