H/t: Peta Pixel
You’ve probably seen videos of sound shattering glass, and the world famous Slow Mo Guys wanted to take the experiment to the next level. So, they used a Phantom TMX 7510 high-speed camera capable of shooting at 187,500 frames per second to capture a wine glass shattering using nothing but sound, around 7500x slower than you can see with your own eyes. For those wondering, the camera alone costs upwards of $60,000+ USD.
Technically speaking, every piece of glass has a natural resonant frequency, or the speed at which it vibrates if disturbed by a stimulus, like a sound wave. So when the the sound gets too loud for the glass to vibrate, the material shatters. In other words, to break the glass, the sound not only needs to be broadcast at the right frequency, but also at a high enough amplitude that exceeds the strength of the glass.
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When projected from a source, the vibration traverses through the air onto the physical structure of the glass. If the acoustic frequency of the sound matches the natural frequency of the glass, the latter starts to vibrate at a larger amplitude, potentially disintegrating its structure,” said the Slow Mo Guys.
