X-Nico

Cornelius Denvir

Among his students at Maynooth was the inventor and physicist Fr. Nicholas Callan, whom he introduced to electricity and magnetism.

Heinrich Daniel Ruhmkorff

Although Ruhmkorff is often credited with the invention of the induction coil, it was in fact invented by Nicholas Callan in 1836.

Nicholas Callan

While in Rome he became acquainted with the work of the pioneers in electricity such as Luigi Galvani (1737–1798) who was a pioneer in modern obstetrics and Alessandro Volta (1745–1827) who is known especially for the development of the electric battery.

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Callan's induction coil also used an interrupter that consisted of a rocking wire that repeatedly dipped into a small cup of mercury (similar to the interrupters used by Charles Page).

see also