Electricity

Angebote / Angebote:

Source: Wikipedia. Pages: 127. Chapters: Electric charge, Electrode, Relative permittivity, Electrometer, Dielectric, Signal reflection, Characteristic impedance, Dielectric strength, Triboelectric effect, Volt-ampere reactive, Van de Graaff generator, Phantom circuit, Capacitance, History of electromagnetic theory, List of installations for 15kV AC railway electrification in Germany, Austria and Switzerland, Electricity on Shabbat in Jewish law, Thermophotovoltaic, Timeline of electromagnetic theory, Thermoelectric effect, Static electricity, High voltage, Thermionic emission, Charge separation, Standby power, Thermoelectric materials, Debye length, Cross-linked polyethylene, Dielectric barrier discharge, Lichtenberg figure, Electro Thermal Dynamic Stripping Process, Electrostatic induction, Electric potential energy, Joule's laws, Space charge, Line of force, Ripple, Speed of electricity, Etymology of electricity, Electric power supply system of railways in Norway, Electrical conductor, Voltage drop, Kelvin water dropper, Charge polarization, Advanced superionic conductor, DC bias, Hipot, Alkali-metal thermal to electric converter, Batteryless radio, Neher-McGrath, Aerial bundled cable, Method of images, Joule heating, Field coil, Rotational Brownian motion, Break junction, Ampere balance, Node, Data collector, NFPA 70E, Ufer Ground, Cellulose electrode, Diversity factor, Capacitance multiplier, Franklin bells, Low voltage, Meter operator, Photoactive layer, Mutual capacitance, CSA Z462, CAN/ULC S801, Thermo-dielectric effect, Characteristic admittance, Electrical polarity, Isolated ground, Meter serial number, Hygroelectricity, Electrostatic units, Unified Power Flow Controller, Bonding jumper, Power-off testing, NFPA 70B, Conductivity factor, Correlated double sampling, Daraf, Abmho, Dielectric breakdown model, Limiting molar conductivity, Bridgman effect, Rating. Excerpt: The history of electromagnetism (including its use) dates back over several thousand years. In the history of electromagnetic theory, the ancients would have been acquainted with the effects of atmospheric electricity, in particular lightning as thunderstorms in most southern latitudes are common, and they also knew of St. Elmo's fire. They however had little understanding of electricity, and were unable to scientifically explain those phenomena. Electricity is treated jointly with magnetism, because both generally appear together, wherever electricity is in motion, magnetism is also present. The phenomenon of magnetism was observed early in the history of magnetism, but was not explained in contemporary understanding until the idea of magnetic induction was developed. The phenomenon of electricity was observed early in the history of electricity, but was not fully explained in contemporary understanding until the idea of electric charge was fully developed. The knowledge of static electricity dates back to the earliest civilizations, but for millennia it remained merely an interesting and mystifying phenomenon, without a theory to explain its behavior and often confused with magnetism. The ancients were acquainted with other curious properties possessed by two minerals, amber () and magnetic iron ore. Amber, when rubbed, attracts light bodies, magnetic iron ore has the power of attracting iron. The discovery of the property of magnets.Magnets were first found in a natural state, certain iron oxides were discovered in various parts of the world, notably in Magnesi...