derivative voltage
11Phasor (sine waves) — In physics and engineering, a phase vector ( phasor ) is a representation of a sine wave whose amplitude (A), phase (θ), and frequency (ω) are time invariant. It is a subset of a more general concept called analytic representation. Phasors reduce …
12Mathematics of radio engineering — A complex valued function. The mathematics of radio engineering is a pleasant and very useful subject. This article is an attempt to provide a reasonably comprehensive summary of this almost limitless topic. While the ideas have historically… …
13Bond graph — A bond graph is a graphical description of a physical dynamic system. It is an energy based graphical technique for building mathematical models of dynamic systems. A bond graph depicts the energy flow between components used to model a system.… …
14Phase-locked loop — PLL redirects here. For other uses, see PLL (disambiguation). A phase locked loop or phase lock loop (PLL) is a control system that generates an output signal whose phase is related to the phase of an input reference signal. It is an electronic… …
15Scanning tunneling spectroscopy — (STS) is a powerful experimental technique in scanning tunneling microscopy (STM) that uses a scanning tunneling microscope (STM) to probe the local density of electronic states (LDOS) and band gap of surfaces and materials on surfaces at the… …
16Organic solar cell — An organic photovoltaic cell (OPVC) is a photovoltaic cell that uses organic electronics a branch of electronics that deals with conductive organic polymers or small organic molecules[1] for light absorption and charge transport. The plastic… …
17Nitrazepam — Systematic (IUPAC) name …
18Commodore 64 — Type Home computer Release date August 1982[1] Discontinued …
19Radar — For other uses, see Radar (disambiguation). A long range radar antenna, known as ALTAIR, used to detect and track space objects in conjunction with ABM testing at the Ronald Reagan Test Site on Kwajalein Atoll …
20chemical industry — Introduction complex of processes, operations, and organizations engaged in the manufacture of chemicals and their derivatives. Although the chemical industry may be described simply as the industry that uses chemistry and… …
