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  2. Draft (engineering) - Wikipedia

    en.wikipedia.org/wiki/Draft_(engineering)

    A cylinder with longitudinal draft Profile view of a drafted cylinder with the draft dimension. In engineering, draft is the amount of taper for molded or cast parts perpendicular to the parting line. It can be measured in degrees or mm/mm (in/in). Consider the fabrication of a hollow plastic box, without lid.

  3. Heat trap - Wikipedia

    en.wikipedia.org/wiki/Heat_trap

    Microcirculation on the left: Heated water is rising into the pipe on top of the hot water tank, cooling off on the sides of the pipe and thence circulating back into the tank. Right: Circulation of hot water is inhibited by the loop in the pipe. Heat traps are valves or loops of pipe on the cold water inlet and hot water outlet of water heaters.

  4. Girard form class - Wikipedia

    en.wikipedia.org/wiki/Girard_form_class

    Girard form class is a form quotient calculated as the ratio of diameter inside bark at the top of the first 16 foot log to the diameter outside bark at breast height ().Its purpose is to estimate board-foot volume of whole trees from measurement of DBH, estimation of the number of logs, and estimation of the taper of the first log, based on the general relationships identified between the ...

  5. Heat capacity ratio - Wikipedia

    en.wikipedia.org/wiki/Heat_capacity_ratio

    A closed pneumatic cylinder contains air. The piston is locked. The pressure inside is equal to atmospheric pressure. This cylinder is heated to a certain target temperature. Since the piston cannot move, the volume is constant. The temperature and pressure will rise. When the target temperature is reached, the heating is stopped.

  6. Thermal efficiency - Wikipedia

    en.wikipedia.org/wiki/Thermal_efficiency

    For a heat engine, thermal efficiency is the ratio of the net work output to the heat input; in the case of a heat pump, thermal efficiency (known as the coefficient of performance or COP) is the ratio of net heat output (for heating), or the net heat removed (for cooling) to the energy input (external work). The efficiency of a heat engine is ...

  7. No. 6 Notre Dame faces off against No. 17 Army: How to watch ...

    www.aol.com/no-6-notre-dame-faces-224115771.html

    The rivalry between No. 6 Notre Dame and No. 17 Army is back and it has major playoff implications. Here's how to tune into the matchup on Saturday.

  8. Nusselt number - Wikipedia

    en.wikipedia.org/wiki/Nusselt_number

    The Nusselt number is the ratio of total heat transfer (convection + conduction) to conductive heat transfer across a boundary. The convection and conduction heat flows are parallel to each other and to the surface normal of the boundary surface, and are all perpendicular to the mean fluid flow in the simple case.

  9. What is a fair-catch kick? Chargers' Cameron Dicker converts ...

    www.aol.com/fair-catch-kick-chargers-kicker...

    Fair-catch free kick rule. Here's the exact wording of the NFL's rule on fair catches, from Rule 10, Section 2, Article 4: "After a fair catch is made or is awarded as the result of fair catch ...