Do tin can telephones actually 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.

What kind of string do you use for a tin can phone?

cotton string
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.

What did you discover on the experiment about string tin cans telephone?

When the can’s string is stretched tightly, it gives the sound wave vibrations a straight path to travel down, so the sound is carried stronger through the string and directly into the other person’s ear. If someone grabs the string, or it gets stuck on something, the sound waves dissipate, and the phone doesn’t work.

How far can a tin can 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.

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.

Do string cup phones 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 does the tin can telephone transform?

When the string is pulled taut and someone speaks into one of the cans, its bottom acts as a diaphragm, converting the sound waves into longitudinal mechanical vibrations which vary the tension of the string.

When you talk on the tin telephone the sound travels through the?

Sound travels through waves and vibrations. With our tin can telephone, speaking into one can then sends the sound vibrations through the string to the other can!

What is the longest tin can phone?

242.62 m
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.

What is the purpose of tin can in telephone?

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.

How long can a tin can 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.

Can you use plastic cups for cup phones?

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.

How far can cup phones work?

Tie each end of the string to a paper clip to prevent the string from detaching from the cups. 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 did the sound travel to the students air using the can telephone?

Why it works: Sound travels through waves and vibrations. With our tin can telephone, speaking into one can then sends the sound vibrations through the string to the other can!

What is the source of sound in the tin can telephone answer?

ANSWER: It is a particular case of mechanical telephony, where sound (i.e., vibrations in the air) is converted into vibrations along liquid or solid medium. These vibrations are transmitted along the medium and then reconverted back to sound. In the case of tin can telephone the medium is a string.

How is sound produced by tin can?

What do kids think about Tin can phones?

Kids growing up in the smartphone generation will be amazed at how something as simple as STRING can transmit sound. Granted, tin can phones aren’t the most practical communication device. Since the line between cans needs to be held taut to transmit sound, you’re unlikely to “place a call” farther than down the hall or across the back yard.

How long of string do you need for a tin can phone?

Any length of string can work, but a length of 10-30 feet is ideal; the string needs to be taut for the phone to work well, making longer lengths a challenge. Using the Phone To speak through the tin-can phone, children should move apart until the string is taut 1 .

How do you talk through a tin can phone?

To speak through the tin-can phone, children should move apart until the string is taut. One child speaks into the can at one end, while the other listens. The sound waves created by speech cause the can to vibrate. This in turn causes the string to vibrate.

What is a tin-can phone?

A tin-can phone is simple to create but alot of fun to play with. Even today’s kids, used to smartphones with dozens of advanced features, can enjoy the classic tin-can telephone. This simple do-it-yourself toy uses basic principles of acoustics to connect two users through a length of string.