Lever a place to stand, and I shall move the Earth with it' is a remark of Archimedes who formally stated the correct mathematical principle of levers (quoted by Pappus of Alexandria). It is assumed that in ancient Egypt, constructors used the lever to move and uplift obelisks weighing more than 100 tons. A lever is a beam connected to ground by a hinge, or pivot, called a fulcrum. The ideal lever does not dissipate or store energy, which means there is no friction in the hinge or bending in the beam. In this case, the power into the lever equals
Hayley Lever in line, form and color. If I were confined to my own back yard for the rest of my life, I'd still have more pictures in my mind than I would have time to paint. Art is nothing but having a good time." Lever went to Pittsburgh in 1922 as an art juror for the Carnegie International exhibition. In 1924, Lever was commissioned to paint a portrait of the presidential yacht, , which was subsequently presented to President Calvin Coolidge in the Cabinet Room of the White House. By 1930, Lever had moved to Caldwell, New Jersey, staying there until