Thread: JNAT Triboluminance:or Pizzaelectric Effect

Sounds amazing..

WE NEED PICS!

There's a lengthy discussion of this phenomena on Wikipedia:

https://en.wikipedia.org/wiki/Triboluminescence

And a whole bunch of stuff on Google, including videos:

https://www.google.com/search?sxsrf=...sclient=psy-ab

I have seen those images on line, What I see are not blue flashed they are orange yellow and it is the droplet as it hits the stone and I assume the reaction continues as the shock wave rolls across the wet stone to the edge or the energy of the wave decreases. The reaction is pretty long compared to the videos of smashed mints.

I expect the color is a result of the kind of crystal, most of the high-speed photography is done with candy, sugar crystals. There are some videos of quartz crystals rubbed together producing a similar color of yellow orange.

The cause is not fully understood but has something to do with the energy in the crystals as the partials collide and release energy on a molecular level. In this case a drop of thinned slurry colliding with the sheet of thin slurry on the stone face.

I will try to see if I can replicate it and take a video. I do not always see this, and I suspect it has a lot to do with this stone, the consistency of the slurry and the lighting. I was not homing in the dark, it was during daylight, in the shop with regular shop lighting.

I have tried several times to reproduce the effect, without success. I do not recall which Tomo I was using, I literally have a dozen on my bench and 4-5 that are the usual suspects, most frequently used.

I recall the slurry was thin, though do not recall how thin. Or if it was a blend of tomo, I often use a thin blend of Diamond and tomo, by thinning Diamond slurry and adding Tomo depending on the feel of the slurry and if I am polishing or resetting a jointed edge.

So, it may be difficult to re-produce intentionally. I have seen the effect several times, though never paid attention what may have cause it.

I am almost always experimenting finishing, though most of the process is similar, but constantly changing to keep interesting. Once you have a post 8k edge, it I easy to try new or different things and if it does not work, you don’t have to go back far, usually to Tenjyo slurry to refresh.

If I do see it, I will try to take a video.

Now that I am aware of this, I watched it for the first time yesterday on my Shobu... never noticed it before, but it happened several times, like a drop of water was mercury and lightning combined, speeding across the stone. Pretty wild!

is everyone that’s seen it using plain water orwater with something in it, like soap, etc?