Does a string and cup 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 sound travels through a string?

Sound waves are created when sounds make vibrations in the air. 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.

How do you make a string can telephone?

How to Make a Telephone with Cans

1. Wash the empty cans – unless you want to get beans in your ears!
2. Hammer a nail through the base of the cans to make a hole in the end of each can.
3. Insert one end of the string through one of the nail holes.
4. Hold one tin can, and give the other tin can to someone else.

How does a tin can phone work?

How Do Tin Can Phones Work? Talking causes little vibrations in the air in front of your mouth, as you can tell by speaking into your hand. This vibration is passed along the string and into the other can. When that can vibrates, it creates vibrations in the air once again and you can hear the other person’s voice!

What string works best for tin can 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.

Is the string a better carrier of sound than air?

Because the molecules in a solid are packed much closer together (more densely), vibrations are passed along much more easily from one molecule to the next. As a result, sound waves travel faster through solids (such as a length of string) than through gases (like air).

Can sound travel in thread also?

Sound | Short/Long Answer Questions Make a small hole at the bottom of each cup and pass a long thread through them. This shows that sound travels through the thread and reaches your ear. Thus, sound can travel through a solid.

What string is best for a cup and string phone?

Of course they were also running their line over 650 feet. Cotton string, fishing line and ordinary twine also work.

How long can a string phone be?

The longest functioning tin can telephone is 242.62 m (796 ft), and was achieved by Puzz Lab Inc., SUSUMU Inc., Gakken Plus Co. Ltd., Roy Hobbs Inc. and Hirofumi Yumoto (all Japan) in Chosei, Chiba, Japan, on 17 August 2019. They were not only successful but also the very first holder of this record title.

Does a tin can and string work?

The tin can telephone could work since it is able to harness the mechanical wave from air (sound that coming out of our mouth), and transfer it through the string to the can on the other side. As for any physical system, there will be attenuation in the wave energy, so the range of the telephone is limited.

Do string phones 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 string telephone?

String Telephone Explanation 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.

Can and string phone?

A tin can and string phone works using a string instead of an electrical current to transport the sound vibrations. What kind of string do you use for a tin can phone? A tin can phone typically uses a tight, non-stretchable thread or string to transmit sound. If it’s not tight enough, the vibrations and resulting sound will be weak.