A can telephone is a simple communication device made from two empty cans and a string. It works by transmitting sound vibrations through the string, allowing two people to talk to each other over a distance. Can telephones are often used as toys for children, but they can also be used for practical purposes, such as communicating between different rooms in a house or between two people who are outside.
Can telephones are easy to make and require only a few materials. To make a can telephone, you will need two empty cans, a string, and a nail or sharp object. First, poke a hole in the bottom of each can. Then, thread the string through the holes and tie a knot in each end. Finally, speak into one can and listen to the other can to hear the sound.
