Stewart, Balfour, physicist, born in Edinburgh; after finishing his university curriculum went to Australia and engaged for some time in business; returned to England; became director at Kew Observatory, and professor of Natural Philosophy at Owens College, Manchester; made discoveries in radiant heat, and was one of the founders of spectrum analysis (q.v.); published text-books on physics, in wide repute (1828‒1887).
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Steward, Lord High * Stewart, Dugald