Top ten Irish scientists of all time

Ireland has made huge contributions to science

Longfield was a dragonfly expert and explorer. She came from an Anglo-Irish family and was interested in botany. Through her work in odonatology and entomology, Longfield saw most of Europe, and travelled extensively in four other continents, at a time when travel meant months at sea on a steamship. In 1945, Longfield published the second enlarged edition of The Dragonflies of the British Isles.

10. Nicholas Joseph Callan (1799-1864), born near Ardee, Co Louth.

Callan was appointed professor of natural philosophy at Maynooth in 1826. He acquired an interest in electrical phenomena, with his most notable contribution being the invention of the induction coil. The induction coil was the forerunner of the modern step-up voltage transformer. Only now is work attaining recognition as it was originally accredited to others.

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