difference gauge
1Gauge theory — For a generally accessible and less technical introduction to the topic, see Introduction to gauge theory. In physics, a gauge theory is a type of field theory in which the Lagrangian is invariant under a continuous group of local transformations …
2Difference between gauge and absolute pressure — The most common pressure reference is gauge pressure signified by a (g) after the pressure unit e.g. 30 psi g, which means that the pressure measured is the total pressure minus atmospheric pressure. There are two types of gauge reference… …
3Gauge symmetry — In gauge symmetry, gauge means measure , and symmetry means stays the same . Geometry is the study of the properties of objects that do not change when they move around. An object is symmetric if some motion leaves it looking the same, for… …
4Difference between train and tram rails — A railroad or railway is a track where the vehicle travels over two parallel steel bars, called rails. The rails support and guide the wheels of the vehicles, which are traditionally either trains and trams. Modern light rail is a relatively new… …
5gauge pressure — The difference between atmospheric pressure and absolute pressure, as read from a differential manometer …
6Dual gauge — Track gauge by size Broad gauge Sta …
7Rail gauge in Hong Kong — In Hong Kong, the Kowloon Canton Railway Corporation (KCRC), which currently runs East Rail, West Rail and Light Rail uses 1,435 mm (4 ft 8 1⁄2 in). The Mass Transit Railway uses… …
8Broad gauge — For other uses, see Gauge (disambiguation). Track gauge by size …
9pressure gauge — 1. an instrument for measuring the pressure of a gas or liquid. 2. an instrument used to determine the pressure in the bore or chamber of a gun when the charge explodes. [1860 65] * * * Instrument for measuring the condition of a fluid (liquid or …
10Introduction to gauge theory — This article is an accessible, non technical introduction to the subject. For the main encyclopedia article, see Gauge theory. Quantum field theory …
