Early Use
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 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 weighting more than 100 tons.
Read more about this topic: Lever
Famous quotes containing the word early:
“Foolish prater, What dost thou
So early at my window do?
Cruel bird, thou’st ta’en away
A dream out of my arms to-day;
A dream that ne’er must equall’d be
By all that waking eyes may see.
Thou this damage to repair
Nothing half so sweet and fair,
Nothing half so good, canst bring,
Tho’ men say thou bring’st the Spring.”
—Abraham Cowley (1618–1667)
“We have good reason to believe that memories of early childhood do not persist in consciousness because of the absence or fragmentary character of language covering this period. Words serve as fixatives for mental images. . . . Even at the end of the second year of life when word tags exist for a number of objects in the child’s life, these words are discrete and do not yet bind together the parts of an experience or organize them in a way that can produce a coherent memory.”
—Selma H. Fraiberg (20th century)