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When glass cups are filled with water and tapped with a fork what causes the sound?
Wiki User
∙ 14y ago
Any glass of appropriate manufacture (wine glasses are a favorite) will make sound when struck, because the walls of the glass vibrate. Glasses are often filled with water, whether a small amount or nearly to the top, because it limits the part of the glass walls that vibrates, raising the pitch the more water is present. This is the concept behind the Glass Harmonica (normally implemented with multiple water glasses and tuned with water.) Ben Franklyn invented the Glass Armonica by mounting nested, tuned bowls of glass on a spindle so they rotated. If the glass is clean, then wet fingers rubbed around the rim will cause them to make a very tonal pitch. The rotation in the Armonica reduced the need for the player to rub around the rim, allowing it to be used for chordal music appropriate to Franklyn's time.
Wiki User
∙ 11y ago
Wiki User
∙ 14y agoVibrations
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What causes a guitar to have sound?
The strings that are on the guitar make the sound play. If you think about it, almost every instrument something vibrates to make a sound. In a saxophone, when you blow into the mouthpiece, it makes the reed move. When you hit a violin, it causes the string to move.
What is the sound source of guitars?
I think that the vibrations of the strings in the box of the guitar is what causes the sound to come out. That is why it is hollow in the box and that is why paint on the box of the guitar dampens the sound of it.
How does sound break glass?
The vibrations. If a glass exhibits resonance (a clear tone when struck or tapped it exhibits resonance) it can be shattered by using sound waves at that frequency. This causes distortions in the surface which build and cause it to shatter.
How do you determine if a bathtub is porcelain or not?
porcelain bathtubs are always cold and feel like glass and have no give. fiber glass and plastic tubs are warmer to the touch, soft and give if pressed on, Enamel when tapped with the hand sound metallic
In particals How do sound waves shatter glass?
If the sound waves are strong enough the shattering of glass occurs when glass vibrates at the same frequency as the sound waves on the outer surface of the glass, but at lower frequencies inside the glass. This causes interference in the waveforms moving through the glass, which stress the glass, causing it to break. This is a different effect than when a single sharp sound, such as an explosion, pushes the glass beyond its breaking point.
How could you find the sound frequency to break a glass?
High frequency sound waves can shatter glass if powerful enough. This happens because the glass vibrates at the same frequency as the sound waves on the outer surface of the glass, but at lower frequencies inside the glass. This causes interference in the waveforms moving through the glass, which stress the glass, causing it to break. This is a different effect than when a single sharp sound, such as an explosion, pushes the glass beyond its breaking point.
Example of solid medium in which a sound can be transmitted?
Think of a solid and there's your answer. Wood, metals, glass... Imagine putting your head on a solid, ear down, which materials would best transport the sound to you if someone tapped the same solid but a metre away? Those are the the solids that best transmit sound.
Explain how resonance can cause a crystal glass to shatter?
When you sing in a high pitched voice the sound you make travels fast wich causes the glass to shattef
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How do you tell if beads are glass?
If you tap your glass bead on glass it will make a "sharp" sound. If you tap your bead on glass and it makes a "dull" sound, it is most likely not made of glass.
Why sound does not pass through the glass?
There is no "why". Sound passes through glass quite easily.
What is the sound of broken glass called?
yes sound can break glass
Does the size of a wine glass affect how much sound is needed to break it?
Sometimes it can do. But most of the time is shouldn't really affect it. If it does, It will affect it slightly. If the glass contains liquid it will most certainly make a big difference, as the liquid will absorb resonance, such as vibrations (pressure waves). If a glass exhibits resonance (a clear tone when struck or tapped it exhibits resonance) it can be shattered by using sound waves at that frequency. If it does not exhibit resonance ( a dull thud when flicked) it will require a great deal more sound energy to shatter. Resonance can be affected by liquid in the glass or the composition (good crystal versus everyday thick glasses)
