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Prism dioptres. Prism correction is commonly specified in prism dioptres, a unit of angular measurement that is loosely related to the dioptre. Prism dioptres are represented by the Greek symbol delta (Δ) in superscript. A prism of power 1 Δ would produce 1 unit of displacement for an object held 100 units from the prism. [2]
Gas cylinder. Industrial compressed gas cylinders used for oxy-fuel welding and cutting of steel. A gas cylinder is a pressure vessel for storage and containment of gases at above atmospheric pressure. High- pressure gas cylinders are also called bottles. Inside the cylinder the stored contents may be in a state of compressed gas, vapor over ...
The primary purpose of leak detection systems (LDS) is to help pipeline controllers to detect and localize leaks. LDS provide alarms and display other related data to the pipeline controllers to assist decision-making. Pipeline leak detection systems can also enhance productivity and system reliability thanks to reduced downtime and inspection ...
Piping. Within industry, piping is a system of pipes used to convey fluids ( liquids and gases) from one location to another. The engineering discipline of piping design studies the efficient transport of fluid. [1] [2] Industrial process piping (and accompanying in-line components) can be manufactured from wood, fiberglass, glass, steel ...
It was built to pipe the gas from the well to nearby shops, Hart improvised a gasometer at the well site and laid pipe to the properties of his first customers. [5] [6] Hart was later consulted to develop a gas lighting system for the Barcelona Lighthouse in 1829. [7] These early pipelines (no longer in use) were made of pine logs. [8]
An inerting system decreases the probability of combustion of flammable materials stored in a confined space. The most common such system is a fuel tank containing a combustible liquid, such as gasoline, diesel fuel, aviation fuel, jet fuel, or rocket propellant. After being fully filled, and during use, there is a space above the fuel, called ...
The U.S. Department of Transportation is providing nearly $400 million to build a new Interstate 55 bridge connecting Tennessee and Arkansas across the Mississippi River, replacing the existing 75 ...
Slosh dynamics. In fluid dynamics, slosh refers to the movement of liquid inside another object (which is, typically, also undergoing motion). Strictly speaking, the liquid must have a free surface to constitute a slosh dynamics problem, where the dynamics of the liquid can interact with the container to alter the system dynamics significantly. [1]