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.
Can you paper phone with yarn cups?
Materials Needed: 2 paper cups. 20 feet of string (We used yarn.)
Can you make a string telephone 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)
Do string phones really 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.
What kind of string do you need for cup phones?
A paper cup phone requires two cups, a length of inelastic string, thread or fishing line, two paper clips and a pencil or sewing needle. To create a paper cup phone, poke a hole in the bottom of each of the cups with the pencil or sewing needle and thread each end of the string through each hole.
What kind of string do you use for cup phones?
What kind of string do you use for a telephone cup?
What kind of string works best for CAN phones?
Step 1. You will need 2 empty tin cans, a hammer, a nail or screw, masking or duct tape, and a long piece of cotton string or fishing line, about 10 to 30 feet in length.
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.
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.
How do you make a telephone with string?
Make a String Telephone. A sharp pencil or sewing needle to help poke holes. Cut a long piece of string, you can experiment with different lengths but perhaps 20 metres (66 feet) is a good place to start. Poke a small hole in the bottom of each cup. Thread the string through each cup and tie knots at each end to stop it pulling through the cup
How to make a string telephone experiment work?
You will find that keeping the line taut is the key to making the string telephone experiment work. When the string is slack, the vibrations dissipate along the way and the never reach the cup on the other end. Another tip is to make sure the string doesn’t touch anything along the way.
How big does a string telephone need to be?
Each student needs: 1 paper cup piece of string (about 2 feet, or 30 cm) 1 small nail String Telephones Worksheet