Compound lever sudden movement of the key. The earliest remaining writings regarding levers date from the 3rd century BC and were provided by Archimedes. ""Give me a place to stand, and I shall move the earth with a lever"" is a remark attributed to Archimedes, who formally stated the correct mathematical principle of levers (quoted by Pappus of Alexandria). The idea of the compound lever is attributed to the Birmingham inventor John Wyatt in 1743, when he designed a weighing machine that used four compound levers to transfer a load from a weighing platform to a central lever from which the weight
Hayley Lever his mother was dying of tuberculosis. During his twelve-month stay he staged several exhibitions, painted seascapes and taught. In 1906, upon returning to Europe, he married Aida Smith Gale in St. Ives' Parish Church. In 1908, Lever did a series of paintings called "Van Gogh's Hospital, Holland" expressing the profound influence he felt from that artist. In 1911, Ernest Lawson, an Impressionist painter, persuaded Lever to move to United States, saying he would have greater success there. Lever arrived in New York City in 1912 and painted views of the Hudson River, Times Square and Central Park. Upon discovering the