Which is what you are doing when you show "evidence" to support your idea that there is a frequency shift, ie, nothing new. You need to prove there is one and you haven't.
John,
How close is unprotected skin from the potential leak site? The water jet will loose velocity quickly. Do we assume they are at least using gloves and a face shield?
If someone is grabbing a hose, can we assume they would notice the leak before handling?
If they create the leak by grabbing, are they able to remove the unprotected skin in a timely manner?
How close is unprotected skin from the potential leak site? The water jet will loose velocity quickly. Do we assume they are at least using gloves and a face shield?
If someone is grabbing a hose, can we assume they would notice the leak before handling?
If they create the leak by grabbing, are they able to remove the unprotected skin in a timely manner?
Not that I can see, as I said I'm no expert, but so far the "others" have provided more evidence that there isn't a shift than you have that there is. The thing is, I have no horse in this race, I really don't care one way or the other who is right, it's interesting that among the "experts" there is so much difference in opinion about what is really happening.
I would worry about grabbing the offending point without knowing there was a pinhole. And, I've no idea if a pinhole would advertise itself visually. I told the mech group leader my worries, they do use wraparound eye protection and leather. Is it clear leather would be sufficient?
I asked him to clearly mention to the workers that pinholes could inject into the skin, it never hurts to provide clear warnings lest someone lower their guard.
jn
Not sure what you are asking about regarding the water, jn. There was a local news story where a little girl had a needle improperly placed by nurses in her hand, and a injection pump just kept injecting for a day or 2 before they noticed it. Obviously some medicine added to a saline drip. Yes, I can still picture the grossly swollen hand in the news. It required some drastic measure I forget, and permanent physical damage, but not life threatening.
Good morning gentlemen. I agree that doubling the working audio bandwidth to 40KHz would be a positive potential improvement in high fidelity reproduction. (I said the same thing 40 years ago in TAS)
Actually, nobody has provided evidence to counter the actual time waveform..the only actual evidence is a before and after waveforms with two entirely different carrier frequencies and different envelopes. Envelopes, that could be easily explained by some filter effect...but not the carrier frequency, that was a slap in the face.
I also have no skin in this. Assuming I am correct, I would rather one of the really good signal processing guys run with it, like Scott's friend.
jn
I am always haunted by the thought that the person was unaware oil was being injected into his hand, he didn't notice. I would not think that possible.
My main concern is, are leather gloves sufficient as protection?
jn
As I recall, using only the real component of an FFT analysis does not describe a unique time domain waveform.
Perhaps someone else can elaborate.
jn
John,
For 8000 lbs to be damaging through something like leather gloves, one would expect the water would have to be ejected through a focusing nozzle and be in fairly close contact. On top of that, it would take a certain amount of time. I expect someone being contacted by the pinhole jet would take steps to remove the affected area before damage is hone.
Just my take.
For 8000 lbs to be damaging through something like leather gloves, one would expect the water would have to be ejected through a focusing nozzle and be in fairly close contact. On top of that, it would take a certain amount of time. I expect someone being contacted by the pinhole jet would take steps to remove the affected area before damage is hone.
Just my take.
Or as my advisor put it, 64 calliopes don't add up to a violin.
He was referring to a music synthesizer board we built (TRW multiplier chip on wire wrap panel, NuBus backplane) that had 64 voices, each a sinewave with programmable amplitude and period (1/frequency), but uncontrolled initial phase.
He was referring to a music synthesizer board we built (TRW multiplier chip on wire wrap panel, NuBus backplane) that had 64 voices, each a sinewave with programmable amplitude and period (1/frequency), but uncontrolled initial phase.
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But then all the vocals would sound like mickey mouse..😕
Helium would certainly change the density, not sure what that would do.
Also, it seems that using a slow helium stream doesn't seem to help remove the water from surfaces, not sure why. Nitrogen always does the trick, and is much cheaper than helium.
Sulphur hexaflouride, I suspect is quite a bit more expensive than nitrogen. Does anybody know if it smells? Sure sounds like it would..
jn
Dayton-Wright. He also used it in the bass enclosures of his later conventional speakers to reduce the box size needed.
dave
Not that i recall. And it looks like that is backed up be Wikipedia: Sulfur hexafluoride - Wikipedia
dave
H2O is a covalent compound and the oxygen atom has free lone pairs of electrons which allow it to be electronegative and participate in ionic bonding. The cohesion and adhesion of H2O is due to this characteristic. And water vapor is sticky! Anyone who has had to maintain a vacuum chamber knows all about this...
Helium is an inert gas and as such is highly non-reactive. Except for some of the radioactive isotopes, He is electroneutral and will not ionically bind with either the H+ or OH- ions found in water.
Nitrogen is triple-bonded into a N2 molecule, so it is considered non-polar. This being said, a small portion of N in the wild can be double bonded to another N so there is some polar moment to that N2 which will allow it to be reactive and bond with H2O.
We used both heat and dry N2 to purge vacuum chambers of H2O after a regeneration and maintenance.
What was the question again? Wandering minds want to know...
Howie
ps, I serviced Quad years ago, and I understood from their engineer that the nylon coating was advantageous exactly because it did absorb H2O and became conductive as a result. With this in mind, wouldn't a totally dessicated coating cease to function, even in a constant-charge capacity?
Maundering winds want to know...
Howie, I am not familiar with this term. Can you explain what you mean please. Is this the electronegativity you are meaning?
All that and you understand oils too..sheesh.
Isn't the quad diaphragm coated with something that gives the conductivity required? I assumed that the bare film is absorbing water and eventually provides too much leakage. If the added coating can be ruined by drying out, that would be no good of course. From the web writeups, it looked like it would be possible to dry the edges without compromising the full sheet.
If not, then the only idea I got left is the guard ring..
jn