How does a string telephone work?

How does a string telephone 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.

Do string phones 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 observations can you make about using the string phone with a hand placed around the cup?

Observations and results In this activity, your voice vibrated the air inside of the cup, which in turn made the bottom of the cup vibrate. These vibrations were transferred to the string and then into the bottom of your partner’s cup, which made the air inside of his or her cup vibrate and become detectable sound.

What is a string phone?

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 sound travels through a string?

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.

Who invented the string phone?

Robert Hooke
1667: Robert Hooke invented a string telephone that conveyed sounds over an extended wire by mechanical vibrations. It was to be termed an ‘acoustic’ or ‘mechanical’ (non-electrical) telephone.

How did the length of the string affect the quality of sound produced in makeshift telephone?

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.

Who invented the string telephone?

The history of the telephone dates back to 1667, when English polymath Robert Hooke created the first acoustic string telephone. Yet, it would take 209 years until Alexander Graham Bell successfully carried out the first bi-directional transmission of clear speech on March 10, 1876.

What is string app?

String is the ultimate global discovery app—making it easier than ever to find great places with our intelligent algorithms, chat about them with friends, secure reservations, and tap into a network of local hospitality Experts. The String Expert Network help make it possible to experience the world as an insider.

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 are sound waves created in a string telephone?

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. You can hear surprisingly far using a string telephone if help the right way!

Is it possible to talk through a string telephone?

Talk through a String Telephone. Back before there were cell phones or even cordless phones, all telephones were hooked up to wires that helped to carry the sound of a person’s voice (via an electric signal). And you can use the same concept to build your own telephone using just cups and some string.

What happens when the string on a telephone goes slack?

These vibrations were transferred to the string and then into the bottom of your partner’s cup, which made the air inside of his or her cup vibrate and become detectable sound. When the string goes slack, the vibrations dissipate more easily and get lost along the way.