Making can telephones is a enjoyable and simple strategy to talk with mates over brief distances. All you want is 2 empty cans, a bit of string, and a nail or sharp object to poke holes within the cans. To make a can telephone, merely poke a gap within the backside of every can, after which thread the string by means of the holes. Tie the ends of the string collectively, and also you’re prepared to begin speaking!
Can telephones work by transmitting sound waves by means of the string. While you converse into one can, the sound waves trigger the string to vibrate. These vibrations are then transmitted to the opposite can, the place they’re transformed again into sound waves which you could hear.