Degritter brand ultrasonic record cleaner

One of the reasons for 40 khz is that the resonance of water is right at that frequency. 41.2khz, approx. IIRC.....

So a 40khz ultrasonic resonator is designed for that frequency and then to wander in that range (+/- 250hz, approx) until it finds the lowest reflections of energy in the resonator and the highest rate of transfer. So not the water resonance really, but the best condition of energy transfer through the medium of water.

This comes out of the ultrasonic sealing industry, the place the ultrasonic resonators at’ 40khz’...come from. Most times they work with water-based products like toothpaste, creames, hair shampoo, etc.

In that, I’m not sure what is accomplished with 120khz. Other than cavitation and heating at the surface of the resonator. Maybe the odd photon.

I’m ready to be wrong about all that, in the face of other arguments. We shall see, kinda thing. Not negative, just neutral.

A bigger number is not automatically better, is the deal, ....but...there may be good reasons to go to 120kz, and such hardware would likely take some tuning, tied to correct analysis...in order to get it to the right spot.

@whart ..
so you came across Jerry Decker’s keeleynet. Which he’s abandoned, probably due to his health. Jerry’s been at it since before the net existed. One of the original scientific oddity data websites and collections, it is. It is slowly fading and the loss of his collection is a great loss to the searchers on the edge of the herd. Those that are by definition the edge of change itself. Reading such oddity websites is what takes a person to being, via finding those chestnuts of data within..can put one 10-20-50 years ahead of anyone else, in some aspects of scientific knowledge. Critical when it comes to putting things together into a framework that works in the now.

In there, when you get past the strange and obsessive ’guardians of the scientific laws’ (don’t look! they scream, with all that agitated hand waving) when you get past the illiterate clams that all they don’t know is foo... then you can get into all the interesting edge phenomena that are indicating where to go and look in emergent science.

Eg, what you just found from nearly 100 years ago, as some sort of grandiose crazy story would be normally delegated by the spitty foo claimers as being a charlatan’s tale ----is actually something that became connected to a real thing, but nearly 100 years later.

This happens a thousand times over. Check the record, to note it when you come across it. And it will happen again --a thousand times more. Thus, logic says, look to the edge and into the darkness, as the middle of the herd..has nothing. Nothing at all.

So ignore all the naysayers and forge ahead. And when they confront you in their self appointed fiefdom of comfort, safety, dogma, and so on, those ’halls of laws and negativity in science’ (Eg engineering..which is given as dogma, for specific reasons), gently push them by the head into a wall so you can say ’excuse me’ and step past their weird negative space ranting. They are psychologically knotted up, and it’s not going to go away. Part of the condition of being in a herd and not knowing the self....

The thing is.. they will all gang up and beat one to death in the public interweb streets for looking at and playing with data they don't understand..but not a single one will appear and show some humanity and chagrin, when they are shown to be wrong. Such is my repeated experience for decades.

And move on to real science (which is by design all theory), which comes from the new and the strange, the oddities and the observations. Always has, always will.

Textbooks are for telling you where the norm of the now is, in the historical sense. Read them and relate and note, but then it’s all on you to throw the textbook over your shoulder..and step out to find the new. The map is not the territory.