Moving fast enough, pieces of salt can certainly break any glass.
No, Salt and Saliva cannot break a glass.
The person in the video is probably using porcelain from a spark plug for this.
There are quite a few videos on YouTube demonstrating the technique.
How do you break glass quietly?
Without proper preparation, breaking glass will be noisy.
- Cover the entire sheet of glass with duct tape so that no glass is visible.
- Lay several layers of thick blankets directly below the glass.
- Place a thick pillow against the glass and tap it gently with a hammer.
Why can porcelain break glass?
Spark plug porcelain fragments are sometimes referred to as ninja rocks because of their ability to break glass with ease. Spark plugs are made of aluminum oxide ceramic, which is exceptionally hard. Spark plug fragments may not break glass if they are not sharp enough or thrown with too little force.
Can your car window shatter in cold weather?
If your glass is chipped or cracked, the extra pressure on the glass can cause your window or windshield to crack or shatter, though it is more common for cracks to form than for the window to shatter. Once the window is exposed to cold temperatures, the extra stress can crack the window.
Can you break bullet proof glass with a spark plug?
Additionally the spark plug fragment really only works with tempered and annealed glass. In terms of laminated glass, it will only effect the exposed layer of glass. To break both sides, you’d have to impact the glass on both sides, but even then, the glass will not shatter and fall to the ground.