A lever ( /ˈlɛvər/ or /ˈliːvər/) is a machine consisting of a beam or rigid rod pivoted at a fixed hinge, or fulcrum. It is one of the six simple machines identified by Renaissance scientists. The word comes from the French lever, "to raise", cf. a levant. A lever amplifies an input force to provide a greater output force, which is said to provide leverage. The ratio of the output force to the input force is the ideal mechanical advantage of the lever.
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Some articles on lever:
... Class" Next → "The Courageous Heart of Irena Sendler" Lauren Ambrose as Leah Lever Adam Kaufman as Jake Lever Susie Essman as Malka Ricki Lake as Rabbi Gerry Christy ...
... Bromley Cross Crompton Farnworth- see above Great Lever- see above Halliwell Harper Green Heaton and Lostock Hulton Kearsley Little Lever and Darcy Lever Rumworth Smithills Tonge ...
... Arley, Blackrod Back o'th Barn, Little Lever - (later renamed Ladyshore) Bally, Little Lever Bank House, Middle Hulton Bents, Little Lever Blackrod, Blackrod (later became No 1 ...
... Lever is a surname ... Notable people with the surname include Johnny Lever, a Bollywood actor William Lever, 1st Viscount Leverhulme, English industrialist and Member of Parliament the primary founder of Lever Brothers ... Lafayette Lever, an American professional basketball player in the NBA Sir Hardman Lever, 1st Baronet Tim Lever, a former member of British pop group Dead or Alive John Lever ...
... Lever is a Portuguese town and a parish in the municipality of Vila Nova de Gaia ... de Gaia Municipality Arcozelo Avintes Canelas Canidelo Crestuma Grijó Gulpilhares Lever Madalena Mafamude Olival Oliveira do Douro Pedroso Perosinho Sandim São Félix da Marinha São Pedro da Afurada ...
More definitions of "lever":
- (noun): A simple machine that gives a mechanical advantage when given a fulcrum.
- (verb): To move or force, especially in an effort to get something open.
Synonyms: pry, prise, prize, jimmy
- (noun): A rigid bar pivoted about a fulcrum.
Famous quotes containing the word lever:
“Now William pulled the lever down,
And click-clack went the printing-press.
William was the only printer in town
Who had peeped while the angels undress.”
—Allen Tate (18991979)
“There is an inner world; and a spiritual faculty of discerning it with absolute clearness, nay, with the most minute and brilliant distinctness. But it is part of our earthly lot that it is the outer world, in which we are encased, which is the lever that brings that spiritual faculty into play.”
—E.T.A.W. (Ernst Theodor Amadeus Wilhelm)
“Och, Dublin City, there is no doubtin,
Bates every city upon the say;
Tis there youll see OConnell spoutin,
An Lady Morgan makin tay;
For tis the capital of the finest nation,
Wid charmin pisintry on a fruitful sod,
Fightin like divils for conciliation
An hatin each other for the love of God.”
—Charles James Lever (18091872)