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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 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 ...
Music Theory and the White Racial Frame (2020) Race in music, Russian and twentieth century music, as well as rap and hip hop [218] Ellie Hisama: Gendering Musical Modernism: The Music of Ruth Crawford, Marion Bauer, and Miriam Gideon (2007) Gender, race, and sexuality in music theory. Popular music [219] Suzannah Clark: born 1969
The Oxford Companion to Music describes three interrelated uses of the term "music theory": The first is the "rudiments", that are needed to understand music notation (key signatures, time signatures, and rhythmic notation); the second is learning scholars' views on music from antiquity to the present; the third is a sub-topic of musicology ...
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 ...
Franklin invented the lightning rod based on what he learned from experiments with his electrostatic machine. [11] [40] Franklin and his associates observed that pointed objects were more effective than blunt objects at "drawing off" and "throwing off" sparks from static electricity. [12] [41] This discovery was first reported by Hopkinson. [19]
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 ...
Now seen as a visionary inventor, supporters see him as the European inventor of the lightning rod, who invented the lightning rod in the same years as Benjamin Franklin, probably even independently. Despite scientific reviews of Diviš's errors (among others, German physicist Meidinger, who compared evidence about early lightning rods in 1888 ...