a capacitor charges
111Photoelectric effect — The photoelectric effect is a quantum electronic phenomenon in which electrons are emitted from matter after the absorption of energy from electromagnetic radiation such as x rays or visible light.cite book | title = Physics for Scientists… …
112Electromotive force — (emf, mathcal{E}) is a term used to characterize electrical devices, such as voltaic cells, thermoelectric devices, electrical generators and transformers, and even resistors. For a given device, if an electric charge Q passes through that device …
113IPod — Infobox Information appliance name = iPod caption = An assortment of iPod models. From back left to front right: fifth generation iPod classic, fourth generation iPod classic, iPod mini, second generation Product Red iPod nano, second generation… …
114Unijunction transistor — Unijunction transistors Circuit symbol A unijun …
115Flashlight — A flashlight (also called an electric torch or torch) is a portable electric spotlight which emits light from a small incandescent lightbulb, or from one or more light emitting diodes (LEDs). The light source is mounted in a housing which… …
116Proximity card — A proximity card A proximity card controlled turnstile …
117Legendre transformation — f(x) . The function is shown in red, and the tangent line at point (x 0, f(x 0)) is shown in blue. The tangent line intersects the vertical axis at (0, f^star) and f^star is the value of the Legendre transform f^star(p 0) , where p 0=dot{f}(x 0) …
118Space Shuttle Solid Rocket Booster — The Space Shuttle Solid Rocket Boosters (SRBs) are the pair of large solid rockets used by the Space Shuttle during the first two minutes of powered flight. They are located on either side of the orange external propellant tank. Each SRB produces …
119Microphonics — (also called microphony) describes the phenomenon where certain components in electronic devices transform mechanical vibrations into an undesired electrical signal (noise). The term is derived by analogy to microphones where that behavior is… …
120Coulomb blockade — Schematic representation of an electron tunnelling through a barrier In physics, a Coulomb blockade (abbreviated CB), named after Charles Augustin de Coulomb s electrical force, is the increased resistance at small bias voltages of an electronic… …
