Alexander was born on the 3rd of March, 1847. He entered Edinburgh University and became a teacher. But later he changed his mind and decided to become a doctor and entered the Medical Department of London University. For two years he was a student of Ludwig Helmholtz. This was a German scientist, a member of St. Petersburg Academy of Science. This outstanding man wrote many works on physics, physiology and psychology. It was him who studied many important physical processes. Helmholtz also wrote basic works on physiology of sight and ear. Bell began to study the human organs of articulation under his guidance.

In 1871 Bell left for Canada and then for America, where he started a teacher-training college for those who wanted to teach the deaf. By artd by Bell came to the idea of importance of listening to the sounds for the possibility of speaking. He decided to create a special apparatus which would help the deaf to pronounce the sounds of speech and to learn to speak. Working on such an apparatus, Bell invented microphone (with engineer Thomas Watson) and telephone...