section 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 …
2Gauge blocks — (also known as gage blocks, Johansson gauges, slip gauges, or Jo blocks) are precision ground and lapped measuring standards. They are used as references for the setting of measuring equipment such as micrometers, sine bars, dial indicators (when …
3Gauge fixing — Quantum field theory (Feynman diagram) …
4Section (fiber bundle) — In the mathematical field of topology, a section (or cross section) of a fiber bundle, pi; : E rarr; B , over a topological space, B , is a continuous map, f : B rarr; E , such that pi; ( f ( x ))= x for all x in B .A section is a certain… …
5Gauge boson — In particle physics, gauge bosons are bosonic particles that act as carriers of the fundamental forces of nature. More specifically, elementary particles whose interactions are described by gauge theory exert forces on each other by the exchange… …
6Section d'un fibré — Une section s d un espace fibré p : E → B Un cham …
7Dual gauge — Track gauge by size Broad gauge Sta …
8Narrow gauge railway — Track gauge by size Broad gauge St …
9Loading gauge — The clearance between train and tunnel is often small. London Underground train at Hendon. A loading gauge defines the maximum height and width for railway vehicles and their loads to ensure safe passage through bridges, tunnels and other… …
10Narrow gauge lines of the Victorian Railways — NA class locomotive, preserved on the Puffing Billy Railway in the original green livery used by the Victorian Railways until 1903. Photographed at Gembrook in 2006. The former Victorian Railways, the state railway authority in Victoria,… …
