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A lightning rod or lightning conductor (British English) is a metal rod mounted on a structure and intended to protect the structure from a lightning strike. If lightning hits the structure, it is most likely to strike the rod and be conducted to ground through a wire, rather than passing through the structure, where it could start a fire or ...
The lightning rod consists of a metal rod or conductor, typically made of copper or aluminum, that is mounted on the roof of a building and connected to the ground by means of a conductive wire. When lightning strikes, the rod provides a path of least resistance for the electrical charge, allowing it to be safely conducted to the ground rather ...
The lightning rod invented by Benjamin Franklin in 1752 suggested a way of avoiding the common problem of lightning causing damage to the wooden sailing ships of the period. In Britain, the Royal Navy chose a protection system with a chain draped into the sea from the top of the mast as a lightning conductor. This system proved unsatisfactory ...
French physicist Alfred Kastler invented the MASER. 1951: First nuclear power plant in the US 1952: Japanese engineer Jun-ichi Nishizawa invented the avalanche photodiode [20] 1953: First fully transistorized computer in the U.S. 1958: American engineer Jack Kilby invented the integrated circuit (IC). 1960: American engineer Theodore Maiman ...
In 1749 he had documented the similar properties of lightning and electricity, such as that both an electric spark and a lightning flash produced light and sound, could kill animals, cause fires, melt metal, destroy or reverse the polarity of magnetism, and flowed through conductors and could be concentrated at sharp points. He was later able ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 20 January 2025. American composer and electronic musician (born 1939) Wendy Carlos Born (1939-11-14) November 14, 1939 (age 85) Pawtucket, Rhode Island, U.S. Genres Electronic classical ambient jazz Occupations Musician composer record producer Instruments Keyboards synthesizer vocoder Years active 1964 ...
America Online CEO Stephen M. Case, left, and Time Warner CEO Gerald M. Levin listen to senators' opening statements during a hearing before the Senate Judiciary Committee on the merger of the two ...
This method is common with smaller groups and choral conductors. [3] If the conductor does not use a baton, their hands must do the job with equal clarity, and the gestures must be first and always meaningful in terms of the music. [6] According to Gustav Meier, most conductors use a baton to "increase the visibility of the beat information". [7]