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
The Prince Who Wanted to See the World an inn so he could ask his father for leave to present her as his bride, but in his joy at seeing his family, he forgot her. She called on her sisters. They persuaded the innkeeper to sell them as doves to the prince. He was delighted with them, but they spoke to him, put the ring on his finger and the collar on his neck, and showed him the feather. He remembered and married her. The Prince Who Wanted to See the World The Prince Who Wanted to See the World is a Portuguese fairy tale. Andrew Lang included