The Telephone

In 1876, Alexander Graham Bell invented the patent for the first telephone. This early phone consisted of a receiver made of a stretched diaphragm with an armature of magnetized iron attached to its middle, and free to vibrate in front of the pole of an electromagnet in circuit with the line. A second membrane-device was built for use as a transmitter. Because of the creation of the telephone, people were now able to communicate freely with each other over long distances of space.  Instead of merely sending messages back and forth with the telegraph, people could now actual talk with one another.