How to use Ferro in a sentence
The personal element is conspicuous in the Brazilian journalism, and for a considerable period of its history libellous attacks on persons, signed by professional sponsors, popularly called testas de ferro (iron heads), were admitted at so much a line in the best newspapers.
An imperfect solution of the equation x 3 +-- px 2 was discovered by Nicholas Tartalea (Tartaglia) in 1530, and his pride in this achievement led him into conflict with Floridas, who proclaimed his own knowledge of the form resolved by Ferro.
He conceived methods for the general resolution of equations of the second, third and fourth degrees different from those of Ferro and Ferrari, with which, however, it is difficult to believe him to have been unacquainted.
The fruits of these labours appeared in different publications, particularly in his Trattato mineralogico e chemico sulle miniere di ferro del dipartimento del Mella (1808) - treatise on the iron mines of Mella.Advertisement