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.
How far can a string phone work?
Their maximum range was very limited, but hundreds of technical innovations (resulting in about 300 patents) increased their range to approximately 0.5 miles (800 m), or more under ideal conditions.
Does a string telephone Work with plastic cups?
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)
Does the telephone work better when the string is tight or loose?
If the string is kept tight, the sound waves will travel. If the string is loose, the sound is less. This is because the lose string causes the vibrations to travel all around rather than directly down the string.
What string works best for tin can phone?
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.
Do paper cup phones really work?
How does the string telephone 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 vibrations are transferred to the string, across the string and into the bottom of the other cup.
How far do cup phones work?
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 do you make a walkie talkie with cups?
Here’s what to do:
Make a hole in the center of the base of both cups, using the pin.Tie one paperclip to one end of the string.Pull the other end of the string through the hole in one of the paper cups. Insert the free end of the string into the hole in the bottom of the second paper cup.
What string is best for a cup and string phone?
You’ll also need string, and lots of it! The guys in the 2013 video used nylon twine, which is pretty stout. Of course they were also running their line over 650 feet. Cotton string, fishing line and ordinary twine also work.
How do you communicate with cups and strings?
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.
How do you make a stethoscope with paper cup and plastic tube?
To make stethoscope, Take paper cup which is in the shape of funnel and size of 6-7 cm.
c. Fix a rubber tube at narrow end of the paper cup.d. Then fix the paper cup in shape with the help of an elastic string.e. Put the pen end of the cup on your chest and the rubber tube in your ear and you can hear the heart beat.
Which material made the best string telephone?
Suggested Materials
Different kinds of cups (paper, plastic, Styrofoam, metal cans, large, small, etc.)Several different kinds of string (cotton, kite string, thread, gimp, dental floss, etc.)Paper clips (100)Scissors.Sharp pencils or small nails (for poking holes in the cups)
How does sound travel through a string telephone?
When you make a string telephone, you talk into it causing the bottom of the cup to vibrate and that vibration travels along the string to the other cup where they can hear the sound of your voice coming out of their cup.
How do you make tin can phones?
Hold one tin can, and give the other tin can to someone else. Walk away from each other until the string between the can is taut. Speak into the open end of one can while your partner listens to the open end of his can. Switch it around and listen.
