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2. Electric strike - Wikipedia

   en.wikipedia.org/wiki/Electric_strike

   Electric strike. Electric strike with monitoring contact. An electric strike is an access control device used for door frames. It replaces the fixed strike faceplate often used with a latch (also known as a keeper). Like a fixed strike plate, it normally presents a ramped or beveled surface to the locking latch allowing the door to close and ...

3. List of US strikes by size - Wikipedia

   en.wikipedia.org/wiki/List_of_US_strikes_by_size

   1971 Northern and Central California construction strikes: 1971 California: 64,100 [48] 1974 Western Electric strike: 1974 63,000 [62] 1975 New York City teachers strike: 1975 New York City: 63,000 [60] 1960 General Electric strike: 1960 nationwide 63,100 [33] 1980 Petroleum strike: 1980 nationwide 62,000 [4] 1949 Ford Motor Michigan strike ...

4. Lightning strike - Wikipedia

   en.wikipedia.org/wiki/Lightning_strike

   A lightning strike or lightning bolt is a lightning event in which the electric discharge takes place between the atmosphere and the ground. Most originate in a cumulonimbus cloud and terminate on the ground, called cloud-to-ground (CG) lightning.

5. Lightning - Wikipedia

   en.wikipedia.org/wiki/Lightning

   Lightning is a natural phenomenon formed by electrostatic discharges through the atmosphere between two electrically charged regions, either both in the atmosphere or one in the atmosphere and one on the ground, temporarily neutralizing these in a near-instantaneous release of an average of between 200 megajoules and 7 gigajoules of energy, depending on the type.

6. Lightning detector - Wikipedia

   en.wikipedia.org/wiki/Lightning_detector

   Life cycle of a thunderstorm and associated reflectivities from a weather radar Distribution of electric charges and lightning strikes in and around a thunderstorm. Lightning detectors and weather radar work together to detect storms. Lightning detectors indicate electrical activity, while weather radar indicates precipitation.

7. Lightning rod - Wikipedia

   en.wikipedia.org/wiki/Lightning_rod

   A lightning protection system is designed to protect a structure from damage due to lightning strikes by intercepting such strikes and safely passing their extremely high currents to ground. A lightning protection system includes a network of air terminals, bonding conductors , and ground electrodes designed to provide a low impedance path to ...