Does the cup and string phone actually 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.
Can sound really travel through a string?
When used properly, sound can travel down the string virtually without losses. Sound waves are compression, or longitudinal, waves. If one speaks into a cup, the sound waves of their voice vibrate the back of the cup, which propagates as longitudinal waves down the string to the other cup.
How does paper cup telephone work?
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. The sound waves become vibrations inside the second cup, transferring the sound of your voice.
Do two cups and a string really 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.
How can we hear sounds through the paper cup phone?
Sound waves are created when sounds make vibrations in the air. In this activity, your voice vibrates the air inside the cup, which are then transferred to the bottom of the cup. The bottom of the cup passes the sound waves to the string, and so on to the other cup.
What string to use for cup phones?
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.)
What kind of string do you use for cup phones?
0:04 1:38 Make Your Own String Phone | One Stop Science Shop - YouTube YouTube Start of suggested clip End of suggested clip Now take the two cups. Focus off on the bottom of each brush. Now thread the string through it. AndMoreNow take the two cups. Focus off on the bottom of each brush. Now thread the string through it. And time off as you tend to prevent the threat from pulling out to the cup.
Can you actually talk through a cup and string?
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 do you make a string cup phone?
0:04 1:38 Make Your Own String Phone | One Stop Science Shop - YouTube YouTube Start of suggested clip End of suggested clip Now take the two cups. Focus off on the bottom of each brush. Now thread the string through it. AndMoreNow take the two cups. Focus off on the bottom of each brush. Now thread the string through it. And time off as you tend to prevent the threat from pulling out to the cup.
How does two cans and a string work?
Description: The tin can telephone is made of a string connecting two tin cans or paper cups. When the sender talks into one side it vibrates air in the cup which vibrates the bottom of the cup. This vibration is transferred through the string and received at the other end by sound.