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 She told him that the king was her father, and hated his father, which was why he had made the prince lose. When he arrived, the king gave him wheat, millet, and barley; he was to sow them, so that the king could have bread the next day. The prince summoned the dove, who sent him to bed. In the morning, he had the loaves of bread. Then the king ordered him to find the ring his oldest daughter had lost in the sea. The dove told him to take a basin and knife to the sea and set sail