What is the principle behind how you can break a wine glass with just your voice without causing any impact?
Science video creator
How I broke a wine glass with my VOICE (using science!) - YouTube
Diana Cowan of YouTuber 'Physics Girl'. Diana urges, ``Let's get straight to the point.''
In December 2017, Diana and fellow science video creator
According to Boyd, the best way to break glass is to 'scream 'A' in a high pitched voice.'
Many experiments have been conducted to break wine glasses using just your voice. An experiment at the Massachusetts Institute of Technology succeeded in breaking a wine glass by playing sound through a speaker.
Also, on the American TV program `` Mysterious Legends ,'' a professional singer takes on the challenge of breaking a wine glass.
Meanwhile, Diana is thinking about whether it is possible to break a wine glass without being a trained professional singer.
We return to the scene where Mr. Diana and Mr. Boyd try to break the wine glass again.
According to Diana, the trick to breaking glass is to 'gradually raise your voice.'
After trying, Diana successfully managed to break the wine glass.
Diana can't hide her surprise at being able to break the wine glass.
Diana explains a phenomenon called ``resonance'' that allows you to break glass with just your voice.
Each object has
For example, when you play the strings of a guitar, each string vibrates at its own natural vibration frequency, creating a tone.
Also, objects have the property of shaking significantly when vibrated at a specific frequency.
Diana likens this phenomenon to a swing: if you push the swing at the correct intervals, the swing will get bigger and bigger.
By emitting a voice with the same frequency as the natural vibration frequency, the wine glass will break as it can no longer withstand the amplified vibrations.
However, ``It is difficult for ordinary people other than professional singers who have received special training to produce a voice with the same frequency as the natural vibration frequency,'' Diana said.
Mr. Diana succeeded in breaking the wine glass, but at that time it seems that there was a small crack in the wine glass to make it easier to break.
Boyd, on the other hand, manages to break a brand new wine glass with no scratches in his video.
So Diana is trying to see if she can break a new wine glass.
Diana was unable to break a wine glass when she tried it with her family.
Diana speculates that the reason is that ``the wine glass used was a regular glass wine glass.''
According to Diana,
Diana said, ``It's very painful because I have to keep making high pitched sounds.''
After a long challenge, Diana successfully managed to break the wine glass.
The wine glass has been destroyed from the root.
According to Diana's friend Kyle Kitzmiller, crystal glass is less strong than regular glass and is more prone to microscopic cracks.
By applying a voice that matches the natural vibration frequency to a crystal wine glass, small cracks will appear in the wine glass, and if you continue to apply your voice to it for an even longer period of time, the cracks will gradually expand. .
When the size of the crack reaches its limit, the wine glass will break, as it did this time.
Looking back on this challenge, Diana cautioned, ``This experiment is extremely dangerous, so if you are unable to wear safety goggles, please do not try it at home.''
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