Show Inventions In by Alexander Bell Before he had hd reached the age of ot 17 Alexander Graham Bell had devised devised devised de de- a method for removing the husks from wheat Among his more I important inventions may be mentioned mentioned mentioned men men- the harmonic multiple telegraph telegraph telegraph tele tele- graph the Ule fundamental method that underlies the electric transmission of speech in any form in any part of the world the magneto-electric magneto speaking telephone the photo-phone photo for transmitting speech and other sounds to a distance by means of ofa a beam of light an induction- induction balance with magneto-electric magneto telephone telephone telephone tele tele- phone phone- for painlessly locating bullets bullets bullets bul bul- lets or or other metallic masses lodged in the human body telephone probe to determine the position and depth of metallic masses in the body the for determining the range of audibility of di different rent substances in the spectrum spectrum spectrum spec spec- trum tetrahedral kites and kite structures Bell was joint inventor of the and flat disc records for recording and reproducing ing speech music and other sounds and also joint inventor in number of improvements designed to promote aerial locomotion in connection with the Aerial Experiment Experiment Experiment ment association 1903 08 |