First, he was responsible for major discoveries in electromagnetism, most significantly the means of constructing electromagnets that were powerful enough to transform electrical energy into useful mechanical work at a distance.
(he; was; responsible for major discoveries in electromagnetism, most significantly the means of constructing electromagnets; T:First) (electromagnets; were; powerful enough to transform electrical energy into useful mechanical work at a distance)
he electromagnets
was were
responsible for major discoveries in electromagnetism, most significantly the means of constructing electromagnets T:First
powerful enough to transform electrical energy into useful mechanical work at a distance