Do two cups and a string really work?
The key is to make sure that the string is tight between the two cups, and this normally means that the distance is limited and the two people have to be connected to each other by a straight line. But as long as the string is tight, it works. It is also a great way to understand how telephones and radio work.
What is a cup with a string called?
A tin can telephone is a type of acoustic (non-electrical) speech-transmitting device made up of two tin cans, paper cups or similarly shaped items attached to either end of a taut string or wire. These vibrations are transmitted through the medium (string) and then converted back to sound.
How do you make a cup phone?
Thread one end of string through the bottom of each cup. Place a paperclip or toothpick in the bottom of each cup and tie the loose end of the string around it (the clip or pick is just here to keep the string from slipping through the bottom of the cup). Give one cup to your conversation partner and hold one yourself.
Does cup on a string work?
A string telephone works very much like a landline phone. When you talk into the cup your voice sends sound waves inside the cup, vibrating the bottom of the cup. The sound waves become vibrations inside the second cup, transferring the sound of your voice.
Does the cup string phone work?
Do string cup phones work?
Does a string telephone Work with plastic cups?
Take a step back in time an make a fun string telephone with your kids and learn how sound travels! To make your own String Telephone, you will need: 2 plastic or paper cups – a tin can works great too. String (you can experiment with different lengths)
How far can a cup phone work?
Making a Paper Cup Phone Pull the string taut and have one person speak into one of the cups while you listen through the other. The cups can be used to communicate over distances of up to 100 feet.
How can I make a string out of paper cups?
To try this technique, take two large paper cups and punch a tiny hole in the center of the bottom of each with a sewing needle or similar. Take a piece (perhaps 100 feet [30 meters]) of non-stretchable thread or kite string and thread each end through each hole.
Can you make a telephone out of a paper cup?
Steps to Make a Telephone out of Paper Cups and String. For materials you’ll need to buy two paper (or plastic) cups and a non-stretchable string, and you’ll need a pair of scissors. Here are the steps to make a paper cup telephone: Poke a hole in the bottom of each cup with the scissors or another small, sharp object.
What’s the difference between two cups and a string?
The old “two cans and a string” technique (or better yet, “two paper cups and a string”) really does work. The key is to make sure that the string is tight between the two cups, and this normally means that the distance is limited and the two people have to be connected…
How to make two cans and a string work?
The old “two cans and a string” technique (or better yet, “two paper cups and a string”) really does work. The key is to make sure that the string is tight between the two cups, and this normally means that the distance is limited and the two people have to be connected to each other by a straight line.