Hans: I think your contact area is out by at least a factor of 10. See Stylus Tip | Adamant Namiki Precision Jewel Co., Ltd.
Thank you Bill,
Excellent info.
I’ll have a closer look at your link.
If true, I will of course have to reconsider things.
This is part of the problem, you find so many different figures.
Mine came from Stanton.
Hans
Wilson Audio S-material and X-material?
btw, I always had a hunch Mr Hefner must have had something to do with the outcome of Wilson Chronosonic.![]()
Hans: I think your contact area is out by at least a factor of 10. See Stylus Tip | Adamant Namiki Precision Jewel Co., Ltd.
You commonly see numbers like 25um^2, but where does this number come from? It must vary considerably with acceleration, as the vinyl walls deform, and as the tip wears. Seems like any single number is pretty sketchy at best. We're living in the fin de siecle of vinyl records, and often just repeating the dances handed down from the Old Ones. Fun to try though.
Much thanks, as always,
Chris
You assumption is that the ice always melts at zero degrees, which is not the case.
Under pressure the transition from solid into liquid and from liquid into gas changes significantly.
When Ice is practically zero degrees, it does not go to >40c while skating to follow your line of thinking.
Hans
Yes and as the pressure goes up theres a point ice doesnt melt till above zero.
ice water transition pressure temp - Google Search
Why do curling athletes vigorously rub the ice in front of the stone so that it slides better and goes further?Apparantly the ice doesn't melt under the skate. Who'da thunk it...
Like the usual wood, Not ?Cons - not thermally conductive
Ah, OK, sorry.Did both you and UT think I mean the cabinet? No, the chassis/basket
Why do curling athletes vigorously rub the ice in front of the stone so that it slides better and goes further?
That has to do with frost that builds up on the ice, and the "pebble" texture of a well prepared curling ice surface. Without the pebble and/or frost sweeping would make no difference, and it certainly doesn't melt the ice. If the ice surface was dead smooth sweeping would be pointless.
Still, it's impressive to see good sweepers straighten a stone or "drag" it an additional 3 meters, it's just not relevant here. My understanding is the skating analogy isn't particularly relevant either, and local melting is not really how skates work. I may be wrong but seem to recall reading some article that said that's a very old fashioned and incorrect explanation of how skates work. You may have noticed that ice is slippery even when you are not wearing skates.
The advantage that skates have over my boots is the sharp edges give grip so the skater can propel himself forward and turn, while also sliding efficiently in the fore/aft direction.
Last edited:
I was away from the thread for a day and it has shot forward lots.
people easily forget that in the middle ages and before a standard poodle was often used as a war dog in battle.
Ahhh posts about poodles and Zappa on the same page...he would be proud...
I was addicted to seeing him between 1973 and 1980...nothing like it....I really do miss the live shows...
RIP Frank,
Howie
The band as I first saw it: YouTube
Last edited:
Cool! I can see why Mr Ponty didn't last long (or maybe he did) - while hes playing is very nice I feels somehow that it doesn't really fit the Z style. I saw a UT video, a whole live Zappa concert, with a lot of people on the stage where the most "prominent" where 2 girls, one in a bunny suit just walking around - really chaotic affair. Anyone have a link to that?
//
//
1969, 1973, 1974 It is very long for musicians ;-)Cool! I can see why Mr Ponty didn't last long
In fact Zappa was not very used to play with jazz musicians, and was, as a guitarist, a little intimidated as an instrumentalist .
Ponty was first price of the "conservatoire de Paris", Zappa self-educated. But Ponty was very admirative of the audacity, the freedom and the taste of Zappa as well as his way of mixing (by mocking sometimes), a little all the styles of music: In an intelligent way, Ponty said.
"zappa had asked george duke to join the mothers of invention. but george felt kind of lonely among all those rockers, and he left zappa to go with cannonball adderley. he passed through paris with cannonball, and told me a group was being put together in los angeles and his manager wanted me to be part of it. george told me, "if you accept, i will too." but i hadn't understood it was to play in zappa's group. in the end i found myself in los angeles, touring with zappa. it was again a very interesting experience at the beginning, because zappa took out all the very complex instrumental music that he had stashed in his desk for a long time since it was too sophisticated for the previous members of the mothers. he had written music that was very influenced by stravinsky, so he wanted to put together a group of excellent instrumentalists. but the public lost interest quickly, and he had to go back to satire and more commercial rock. that wasn't what i wanted to do, so i left after only seven months. he didn't take it well at all and we parted on very bad terms. - JLP"
Last edited:
Wilson Audio S-material and X-material?
btw, I always had a hunch Mr Hefner must have had something to do with the outcome of Wilson Chronosonic.![]()
I like the original model better 🙂.
If it measures like the Sasha, and it will, give or take a little, it has performance to match its horrible looks. It is all in the polars. This loudspeaker will have a sub par power response, unlike for example the M2's.
But, imho, dentists deserve no better.
Have any of y'all heard of Essra Mohawk? She was in the original Mothers of Invention, played with the Grateful Dead, described Woodstock to her friend Joni Mitchell after returning from it (missed her scheduled appearance because traffic was nuts) and heard Joni's song the next morning, and had a song from her _Primordial Lovers_ album stolen by a certain famous musician:
YouTube
Some hippy-dippy history,
Chris
YouTube
Some hippy-dippy history,
Chris
😀Ahhh posts about poodles and Zappa on the same page...he would be proud...
I checked the ice slippery thing some day ago and it's allegedly according to some research so that the upper most molecular layers is in semi-liquid form, and at somewhere around -40C it's only one layer thick and the slippery effect is diminishing, that's why two ice cubes do attach to each other and freeze together, next topic please...
edit: couldn't find that particular article, but another paper for those whom it may interest.
http://www.physics.ohio-state.edu/~jay/846/skating.pdf
Thank you for the pdf.
Very interesting, it shows how complex this subject is.
Hans
75 lbs. pure breed Dalmatian male, FWIW. Has a PhD in dog training (over two years of a daily training/obedience schedule since he was 6 mths old).
That’s big. Our guy I am expecting to top out at 50-55.
Training classes starting this Friday.
- Status
- Not open for further replies.
- Home
- Member Areas
- The Lounge
- John Curl's Blowtorch preamplifier part IV