In addition to the telephone, what else did Alexander Graham Bell invent? Answer
In addition to the telephone, Alexander Graham Bell also famously invented an early form of the metal detector. This invention was born out of an urgent, specific crisis, rather than being a direct extension of his primary work in telecommunications.
Bell developed this crucial device, which he referred to as an “induction balance,” in 1881. His motivation was to assist in locating a bullet lodged in the body of President James A. Garfield, who had been shot by an assassin. Leveraging his profound understanding of electromagnetic principles, honed during his development of the telephone, Bell quickly engineered a machine designed to detect metallic objects within human tissue.