The Telephone
worth over $58 in the year 1871
Alexander Graham Bell
Alexander Graham Bell’s idea for the telephone was sparked by his studies of the human ear.
Like his father, Bell worked as a speech therapist and taught deaf people. Both his mother and his wife Mabel were deaf.
Like his father, Bell worked as a speech therapist and taught deaf people. Both his mother and his wife Mabel were deaf.
Alexander Graham Bell
the first telephone
Alexander Graham Bell
why it was invented
In 1874 Bell built a phonautograph--a device that could draw the vibrations of a human voice--to teach his deaf students how to visualize sound. Constructed out of an actual human ear, Bell’s phonautograph led him to consider that voice sounds might be conveyed electrically.
International Bell Telephone Company
Location: Massachusetts Avenue, Boston, MA, United States
Phone: 121-453-2357