The Flos of Leonardo turns on the second question set by John of Palermo, which required the solution of the cubic equation x 3 -{-2x'-}-lox = 20.
The whole history of the ensuing period of south Italian history turns on the claims of the papacy over the kingdoms of Naples and Sicily, based on the recognition of papal suzerainty in 1053.
But in Homer the interest is purely dramatic. There is no strong antipathy of race or religion; the war turns on no political event; the capture of Troy lies outside the range of the Iliad.
In the arrangement shown there are three equal sheaves in each block, and each set turns on a pin secured in the framing.
In telecentric and hypercentric transmission we obtain a false conception of the spatial arrangement of the objects or their details; in these cases one focusses by turns on the different details, and so obtains an approximate idea of their spatial arrangement.
