Indirectly he powerfully promoted it by deepening the national life from which it sprang.
And the idea of a change seems to have been powerfully supported.
He showed that if an antenna were constructed with a short part of its length vertical and the greater part horizontal, the lower end of the vertical part being earthed, and if oscillations were created in it, electric waves were sent out most powerfully in the plane of the antenna and in the direction opposite to that in which the free end pointed.
But to the Europeans of the i 5th century India was practically an unknown land, which powerfully attracted the imagination of spirits stimulated by the Renaissance and ardent for discovery.
Its defect is that its tragic conclusion does not seem absolutely inevitable, but the characters - especially those of the Grafin Orsina and Marinelli, the prince of Guastalla's chamberlain who weaves the intrigue from which Emilia escapes by death, are powerfully drawn.