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 sound waves become vibrations inside the second cup, transferring the sound of your voice.
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Do tin can phones really 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.
What kind of string works best for CAN phones?
Step 1. 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.
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 sound waves become vibrations inside the second cup, transferring the sound of your voice.
Does the telephone work better when the string is tight or loose?
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!If the string is kept tight, the sound waves will travel. If the string is loose, the sound is less.
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 half a mile (800 m), or more under ideal conditions.
How do sound waves travel?
Sound vibrations travel in a wave pattern, and we call these vibrations sound waves. Sound waves move by vibrating objects and these objects vibrate other surrounding objects, carrying the sound along.Sound can move through the air, water, or solids, as long as there are particles to bounce off of.
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.
Will yarn work for a 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.
What kind of string do you need for Cup phones?
A paper cup phone requires two cups, a length of inelastic string, thread or fishing line, two paper clips and a pencil or sewing needle. To create a paper cup phone, poke a hole in the bottom of each of the cups with the pencil or sewing needle and thread each end of the string through each hole.
Does a string telephone work around corners?
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.
Who invented the string telephone?
Robert Hooke
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.
Can you make a string telephone with plastic cups?
To make your own String Telephone, you will need:
Simply make a small hole in the bottom of both cups. Thread your string through the cup and tie a knot to keep the string from pulling back through. That’s it!One friend holds the cup to their mouth and talks, while the other friend holds it to their ear and listens.
Can you use yarn for cup phones?
To make your own cup phones, use the tip of a pencil to poke a small hole at the bottom of each of your two cups. Next, thread the string through the hole of one cup. We just tied a knot in the yarn on the inside of the cup to keep it in place.
How could you stop the sound Travelling in a tin can telephone?
Make a hole in the bottom of each can with a nail and hammer. String a long piece of string from one can to the other. Tie knots in the ends of the string so the string doesn’t pop out.
How does sound waves travel from the cup to your ears?
Sound vibrations are funneled into your ear canal by your outer ear (pinna). As the vibrations move into your middle ear, they hit your eardrum and cause it to vibrate as well.The stirrup passes the vibrations into a coiled tube in the inner ear called the cochlea.
How can you find out if sound vibrations travel through other materials?
Sound travels more quickly through solids than through liquids and gases because the molecules of a solid are closer together and, therefore, can transmit the vibrations (energy) faster. Sound travels most slowly through gases because the molecules of a gas are farthest apart.
What happened to the sound produced if you used different types and thickness of string?
Thick strings with large diameters vibrate slower and have lower frequencies than thin ones. A thin string with a 10 millimeter diameter will have a frequency twice as high as one with a larger, 20 millimeter diameter. This means that the thin string will sound one octave above the thicker one.
What is the effect of loudness of sound as the length of straw decreases?
When the length of the straw changes the sound or pitch changes. Pitch is how high or low a sound is perceived. We made 4 different length straws with different pitches. The longer the straw the lower the pitch – the shorter the straw the higher the pitch.
How long can you make a string phone?
Cut a long piece of string, you can experiment with different lengths but perhaps 20 metres (66 feet) is a good place to start. Poke a small hole in the bottom of each cup.
Why does a tin can telephone 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!