differential vacuum gauge
1Vacuum — This article is about empty physical space or the absence of matter. For other uses, see Vacuum (disambiguation). Free space redirects here. For other uses, see Free space (disambiguation). Pump to demonstrate vacuum In everyday usage, vacuum is… …
2Vacuum brake — The vacuum brake is a braking system used on trains. It was first introduced in the mid 1860s and a variant, the automatic vacuum brake system became almost universal in British train equipment, and in those countries influenced by British… …
3Gauge 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 …
4Vacuum angle — In quantum gauge theories, in the Hamiltonian formulation, the wave function is a functional of the gauge connection A and matter fields φ. Being a quantum gauge theory, we have to impose first class constraints in the form of functional… …
5Hot filament ionization gauge — Infobox Laboratory equipment name = Hot filament ionization gauge caption = Bayard Alpert hot thoriated iridium filament ionization gauge on 2.75 in conflat flange acronym = other names = Hot cathode gauge Bayard Alpert gauge uses = Pressure… …
6Closed and exact differential forms — In mathematics, especially vector calculus and differential topology, a closed form is a differential form α whose exterior derivative is zero (dα = 0), and an exact form is a differential form that is the exterior derivative of another …
7Introduction 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 …
8дифференциальный вакуумметр — Вакуумметр для измерения разности давлений, существующих одновременно по обе стороны разделительного чувствительного элемента. [ГОСТ 5197 85] Тематики вакуумная техника EN differential vacuum gauge DE Differenzdruckvakuummeter FR manomètre… …
9Pressure measurement — The construction of a bourdon tube gauge, construction elements are made of brass Many techniques have been developed for the measurement of pressure and vacuum. Instruments used to measure pressure are called pressure gauges or vacuum gauges. A… …
10Pressure sensor — Digital air pressure sensor Compact digital barometric pressure sensor A pressure sensor measure …
