Title: Re: Scientists in a spin over curling clues
[EMAIL PROTECTED] wrote:
In a message dated 11/22/2005 6:43:32 PM Eastern Standard Time, [EMAIL PROTECTED] writes:
The problem is why curling stones, which rotate clockwise, curl to
the right, unlike other objects, such as a glass spinning on a
table, which veer in the opposite direction.
Thanks for the post.
P.M.S. Blackett's law conneting the magnetic field of a body with its spin P=BG^1/2/2c * U where P is the magnetic field strength, B a new constant with magnitude near to unity for the unites chosen, G the universal gravitation constant, c the speed of light, and U the angular momentum may help us find a connection between right and left curls, gravity and rotating spinning matter.
If we assume that the spiraling curling force in every atom may be associated with the gravity force, then if we were to counter the spiraling force in every atom by either using a counter spiraling force such as a counter spiraling sphere or gyroscopic force around the atom or a collections of atoms in a body or ship, then we may be able to counter gravity. Since many objects may have a spiraling force that goes in both left and right spiraling directions we may need a counter spiraling force that goes counter right and counter left as in a double left and right spiraling spheres or gyroscopes as used in the Nazi Bell antigravity device. We may also develope tinny left and right handed antennas placed in nanomade materials which capture the spiraling forces and creates and antispiraling force, to make materials that may jam out some of the gravity forces perhaps up to 80 percent.
Personally, I think the phenomena of curling is inconsistent with some aspect
of Newton mechanics.
Anyway, any explanation of curling will have to be consistent with the
following observations.
Harry
-
Curling rock dynamics: Towards a realistic model
by Mark Denny
No subscription required to download this paper from the
Canadian Journal of Physics web site:
http://pubs.nrc-cnrc.gc.ca/cgi-bin/rp/rp2_vols_e?cjp
see issue Sept. 2002
Other papers on curling can be found here as well.
begin quote:
Observed characteristics of curling rock trajectories, familiar to any
experienced curler, are listed below.
1. For a counterclockwise angular velocity (as seen from above) the rock
develops a component of linear velocity to the left.
2. For a clockwise angular velocity it moves to the right; for no angular
velocity the rock does not deviate from its initial direction.
3. For conventional angular velocities, the trajectories are insensitive to
initial angular speed.
4. Rotational and translational motion stop at about the same time.
5. The normalized angular speed (i.e., angular speed divided by its initial
value) slows down less rapidly than does normalized linear speed, except at
the end of the trajectory.
Here ³conventional angular velocities¹ are those normally imparted during a
game of curling, and are such that the rock undergoes 14 full rotations
before coming to a halt. These facts have long been known in the world of
curling. Observations 1 to 3 were first introduced to physicists 20 years
ago [1]. Observation 3 has recently been confirmed experimentally by Penner
[7]. That curl distance is insensitive to initial angular speed is a
well-known fact amongst experienced curlers. We can infer observation 3 by
noting the manner in which curlers specify to each other how a shot should
be played. A curler at one end of the ice is asked to play a shot by his
skip at the other end of the ice, in the house (the target area). The skip
indicates the initial direction of the shot, usually by placing his brush,
vertically, so as to give the curler a line to aim at. He also indicates the
weight to be applied (i.e., the initial speed): he asks for draw weight for
a shot to finish in the house, and may specify further whether he wants the
rock in the front or back of the house. He also indicates which handle
(direction of rotation: clockwise or counterclockwise) he wants the curler
to apply. Thus, in physics terms, the skip specifies both magnitude and
direction of initial rock linear velocity, but only specifies direction of
initial angular velocity: he does not specify initial angular speed. This
indicates that, over the range of angular speeds imparted during a game, the
curl distance is insensitive to this variable.
end quote
