"The Hockey-puck Curve". Was: "The Bell Curve"
Francis Muir
Ed Faith writes:
Michael Kogalenko writes:
If you want to have a nitpicking competition, I can do
this, too. Of course, the "no" answer should be qualified.
The required qualifications are that a) friction is not
velocity-dependent
One interesting consequence of constancy of total friction, is
that if the puck spins fast enough, it will glide "frictionlessly"
over the ice, because the friction will be working to slow the spin
rather than to slow the forward motion.
An idiotic model cannot have an interesting consequence. Kogalenko's
bubble was burst when I pointed out a day or so ago that a velocity-dependent
friction would cause the puck to curve against its spin direction. The most
elementary, first-order friction model -- once static friction has been
overcome -- is to have friction linearly dependent on velocity. In this
case, as I have said, the puck will curve away from the spin direction.
Philomath
Ron Hardin <9289-11216> 0112110
Francis Muir writes:
>An idiotic model cannot have an interesting consequence. Kogalenko's
>bubble was burst when I pointed out a day or so ago that a velocity-dependent
>friction would cause the puck to curve against its spin direction. The most
>elementary, first-order friction model -- once static friction has been
>overcome -- is to have friction linearly dependent on velocity. In this
>case, as I have said, the puck will curve away from the spin direction.
That's alluvial hockey pucks. You have to keep them on leashes or they
drift off.
We used to race them against tar.
Francis Muir
Ron Hardin writes:
That's alluvial hockey pucks. You have to keep them on leashes
or they drift off. We used to race them against tar.
When I am feeling particularly disagreeable about the Canadians I remember
that they have given us one of the funniest sports ever -- Curling. Now
there's a sport for rabbisti. That broom-sweeping...
Philomath
Ted Samsel
Francis Muir (fra...@pangea.Stanford.EDU) wrote:
Hmmm. I seem to recall that curling is Scots in origin. Like gawf.
--
Ted Samsel....tejas@infi.net *1996* Year of the Accordion~~~~~~~~~~~~~~~~~~~
"Home of the brave, land of the free,
I don't want to be mistreated by no bourgoisie."
Huddie Ledbetter
Francis Muir
Ted Samsel writes:
Francis Muir writes:
When I am feeling particularly disagreeable about the
Canadians I remember that they have given us one of the
funniest sports ever -- Curling. Now there's a sport
for rabbisti. That broom-sweeping...
Hmmm. I seem to recall that curling is Scots in origin. Like gawf.
Marked RP is "goff" not "gawf". Now "off" as in "get off my back" is "orf"
in MRP. Curling developed in Scotia? Sounds about right. The Stone of
Scone was probably a curling puck ab origine.
Philomath
John Camp
in the Snow" which is in the Kunsthistoriches Museum and "Winter Landscape,"
in Brussels, show people both curling and playing what appears to be a version
of hockey, so maybe the Flems had something to do with it. The paintings were
done in the 1560s, long before they were playing any games in Scotland, or,
for that matter, even had fire or the wheel. I should mention that St. Paul
(Minn.) has a private club devoted to curling, which could account for the
relatively high per capita consumption of kif...
Speaking of which, I've always wondered about another of Bruegel's paintings,
"Harvest," which is in the Met (and where I spent a half hour examining it one
day until disturbed by a group of ankle-biters who could really have given a
shit about Breugel and all his works, and who were dragged before the painting
by their teacher who was determined to beat it into them, which she did,
loudly, for the best part of fifteen minutes.) Anyway, the painting shows the
wheat (barley?) as nearly shoulder high, as are the shocks. His observation
seems very acute, and I wondered...did wheat used to be a Tall Grain, as tall
perhaps as corn? Anybody?
JC
Joann Zimmerman
In article <4mo9h0$r...@morrow.stanford.edu>, fra...@pangea.Stanford.EDU
(Francis Muir) wrote:
> Ted Samsel writes:
> Hmmm. I seem to recall that curling is Scots in origin. Like gawf.
> Marked RP is "goff" not "gawf". Now "off" as in "get off my back" is "orf"
> in MRP. Curling developed in Scotia? Sounds about right. The Stone of
> Scone was probably a curling puck ab origine.
Nope, "gawf" as in "gawful," which is how I will feel if I ever get
smacked up the side of the head with one of the balls as I cruise by the
local 9-hole course.
--
"I never understood people who do not have bookshelves."
--George Plimpton
Joann Zimmerman jz...@ccwf.cc.utexas.edu
Francis Muir
Joann Zimmerman writes:
Francis Muir writes:
Ted Samsel writes:
Hmmm. I seem to recall that curling is Scots in
origin. Like gawf.
Marked RP is "goff" not "gawf". Now "off" as in "get off
my back" is "orf" in MRP. Curling developed in Scotia?
Sounds about right. The Stone of Scone was probably a
curling puck ab origine.
Nope, "gawf" as in "gawful," which is how I will feel if I ever get
smacked up the side of the head with one of the balls as I cruise
by the local 9-hole course.
OK, all is now clear. Joann's "gawful" is "godawful" compacted. Curiously,
Golfin' as a sport never had the final -g but derives -- again by compaction
-- from Godolphin who invented the game.
Fore!
Philomath
Ken MacIver
jc...@mr.net (John Camp) wrote:
Francis Muir writes:
>Ted Samsel writes:
>> Francis Muir writes:
> When I am feeling particularly disagreeable about the
> Canadians I remember that they have given us one of the
> funniest sports ever -- Curling. Now there's a sport
> for rabbisti. That broom-sweeping...
>
> Hmmm. I seem to recall that curling is Scots in origin. Like gawf.
>
>Marked RP is "goff" not "gawf". Now "off" as in "get off my back" is "orf"
>in MRP. Curling developed in Scotia? Sounds about right. The Stone of
>Scone was probably a curling puck ab origine.
Philomath
I don't know if the Scots invented it, but I do know that Bruegel's
Hunters in the Snow" which is in the Kunsthistoriches Museum and
"Winter andscape," in Brussels, show people both curling and playing
what appears to be a ersion of hockey, so maybe the Flems had
something to do with it. The aintings were done in the 1560s, long
before they were playing any games in cotland, or, >for that matter,
even had fire or the wheel. I should mention tha St. Paul >(Minn.) has
a private club devoted to curling, which could account for the
>relatively high per capita consumption of kif...
Last year, at the Bryn Mawr annual book sale, I purchased a 1949
edition of Muirhead's Scotland, which describes curling as Scotland's
national games and states, "[i]t has been practised in Scotland for
over 400 years, the oldest dated curling stone, the Stirling Stone,
bearing the date 1511. Even more primitive stones, however, have been
found in rivers and lochs.
Ken MacIver
Ted Samsel
Jim Carr (j...@ds8.scri.fsu.edu) wrote:
: Regressing, since this awesome cross post has led to an amazing
: divergence from the original thread ...
:
: Curling, particularly the sunday afternoon matches on the CBC, is the
: perfect sport for a classical physicist. All those perfectly elastic
: collisions, momentum vectors, friction, arcane language. Back in
: Michigan I always looked forward to the Silver Broom competition,
: but only if the original brooms were used, not those nasty push
: brooms that lack a satisfying whap-whap sound.
:
: But don't blame the Canandians. Their main contribution was to use
: look-down cameras and a telestrator to analyze play and predict what
: the next person should do with his or her rock. Wonderfully inane.
:
: Now, who knows if baseball got its 9 innings from curling, or did
: this come from some other source, like the "sports" of bowling or
: cricket? Did cricket used to play more than an inning? Does 9-pins
: use 9 or 10 frames? Does anyone care?
My brother, the minor regional poet and steel guitar picker, found
that the most hideous part of life in the Gulf States was televised
cricket. He said it might be fun to play but they might as well
televise croquet or (correct me if I am wrong) the even more
byzantine variant known as rocque.
He did enjoy hawking and learned that if the bustard besh*ts the
falcon, the falcon must be destroyed, tout suite.
"The ferrule rules in Sharjah!"
Martin Adamson
>by their teacher who was determined to beat it into them, which she did,
>loudly, for the best part of fifteen minutes.) Anyway, the painting shows
the
>wheat (barley?) as nearly shoulder high, as are the shocks. His observation
>seems very acute, and I wondered...did wheat used to be a Tall Grain, as
tall
>perhaps as corn? Anybody?
I don't know how tall the grain was, but in those days people were shorter,
because of the diet, I should think. If you've ever been into an old farm
house or castle and clunked your head on every door lintel you pass you will
know what I mean.
Martin