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
Had Enough (The Who song) Enough" was the third John Entwistle composition that had Roger Daltrey on lead vocals, after "Someone's Coming" from 1967, and "Success Story" from 1975. Entwistle said of the song's composition: Unusually for a Who song, it features a full string orchestra, which was arranged by Ted Astley. Pete Townshend said of these strings: Roger Daltrey, however, did not approve of these strings, reportedly head-butting producer Glyn Johns over the disagreement. He later said: Had Enough (The Who song) "Had Enough" is a song written by The Who bassist John Entwistle, and featured on their eighth studio album, "Who Are You".