The YouTube channel Slow Mo Guys has gained significant popularity over the years with its slow-motion videos.
Recently, Gav performed slow-motion footage of a spark plug hitting a car window and revealed how a vintage 16mm camera works. In the latest video, Gav surprised viewers with the sight of a shattered wine glass.
In the latest video, Gav surprised viewers with the sight of a shattered wine glass.
To demonstrate the power of sound, Gav used an extremely loud volume to break the wine glass. The video was shot using a high-speed camera at a rate of 187,500 frames per second. The machine used to capture the ultra-slow footage is the Phantom TMX 7510.
Gav utilized a very loud volume to affect a wine glass, and the result was not too surprising.
Gav explained that the resonant frequency of glass (the sound you can hear when you lightly tap a wine glass) is the frequency he targeted. The resonant frequency is the natural frequency at which an object or medium vibrates at its highest amplitude.
In this case, the glass shatters when it is exposed to a certain frequency because the sound waves cause the molecules to vibrate.
Gav used an extremely loud volume to break the wine glass.
Cadence PCB explains: “When emitted from a source, vibrations travel through the air to the physical structure of the glass. If the frequency of the sound matches the natural frequency of the glass, subsequent sound waves will begin to vibrate with greater amplitude and cause its structure to disintegrate.”
In this case, Gav intended to exploit the resonant frequency of the wine glass, which is 505 Hz, and used sound that was very close and very loud to make the molecules vibrate intensely, affecting the structure of the glass and causing it to break.
Gav joked: “Do not watch this video if you have a resonant glass eardrum at 505 Hz.”
187,000 frames per second is a great combination of high speed and large resolution.
Gav created and directed the sound towards the glass by emitting a selected frequency from an iPad application and connecting through an amplifier attached to a compression driver. The audio driver was placed in a short segment of PVC, which helped focus the sound onto the side of the glass cup.
As mentioned earlier, the Phantom TMX 7510 camera was newly launched at the beginning of this year. The TMX 7510 can achieve 76,000 frames per second at a full 1MP resolution of 1280 x 800 pixels and over 300,000 frames per second at 1280 x 192 pixels resolution and over 770,000 frames per second at smaller resolutions. Therefore, the speed Gav chose, 187,000 frames per second, is an excellent combination of high speed and large resolution.
