grid-voltage supply
51The Tokyo Electric Power Company — Infobox Company name = The Tokyo Electric Power Company type = Public KK (tyo|9501) foundation = May 1, 1951 location city = Tokyo location country = JPN origins = The Tokyo Electric Light Company, Incorporated (founded in 1889) key people =… …
52microscope — /muy kreuh skohp /, n. 1. an optical instrument having a magnifying lens or a combination of lenses for inspecting objects too small to be seen or too small to be seen distinctly and in detail by the unaided eye. 2. (cap.) Astron. the… …
53Electrostatic loudspeaker — An electrostatic loudspeaker is a loudspeaker design in which sound is generated by the force exerted on a membrane suspended in an electrostatic field.Design and functionalityThe speakers use a thin flat diaphragm usually consisting of a plastic …
54Electricity — (from the Greek word ήλεκτρον, (elektron), meaning amber, and finally from New Latin ēlectricus , amber like ) is a general term that encompasses a variety of phenomena resulting from the presence and flow of electric charge. These include many… …
55Electrometer — An electrometer is an electrical instrument for measuring electric charge or electrical potential difference. There are many different types, ranging from historical hand made mechanical instruments to high precision electronic devices. Modern… …
56Wattmeter — The wattmeter is an instrument for measuring the electric power (or the supply rate of electrical energy) in watts of any given circuit. Electrodynamic The traditional analog wattmeter is an electrodynamic instrument. The device consists of a… …
57Electron microscope — Diagram of a transmission electron microscope A 197 …
58photography, technology of — Introduction equipment, techniques, and processes used in the production of photographs. The most widely used photographic process is the black and white negative–positive system (Figure 1 >). In the camera the lens projects an image of… …
59Nickel–iron battery — specific energy 30[1] −50[2] Wh/kg energy density 30[1] Wh/l specific power …
60Thyratron — A thyratron is a type of gas filled tube used as a high energy electrical switch and controlled rectifier. Triode, Tetrode and Pentode variations of the thyratron have been manufactured in the past, though most are of the triode design. Gases… …
