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The Fyenman Lectures on Physics
²Ä¤@¥U¡]¦@¤T¥U¡^¡A²Ä¤Q¤E³¹¡A²Ä¤E¶¡C¦¹³B½Í¤Î¬_§Q´µ
µê¤O Coriolis Force.¥H«eŪª«²z®É´¿¸gÅ¥¹L¬_§Q´µ
µê¤O¡A¨s³º±¡ªp¦p¦ó¡H¤w¸g²H§Ñ¡A·í®É¨M©w¦h§ä°Ñ¦Ò¡A¬Ý
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94,07,22,07,18,55
http://www.physics.orst.edu/~mcintyre/coriolis/index.html
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94,07,26,19,24,17
https://commerce.aip.org/servlet/lookup6?cvips=AJPIAS000068000012001097000001
[[
Using great circles to understand
motion on a rotating sphere
D. H. McIntyre
Department of Physics, Oregon State
University, Corvallis, Oregon 97331
Received : 28 January 2000
]]
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The Coriolis Effect PDF-file. 17 pages.
A general discussion by Anders Persson
of various aspects of the coriolis effect,
including Foucault's Pendulum and Taylor
columns.
http://met.no/english/topics/nomek_2005/coriolis.pdf
C:\$fm\ph\Coriolis\met.no-Coriolis.pdf
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Fig. 19: Two erroneous images of the
deflection mechanism: a) conservation
of absolute velocity and b) motion
along great circles. The latter appears
to work for eastward motion, but
not for westward.
¡f¡f
94,09,23,16,11,50 ÁʶR D. H. McIntyre
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tan(lambda)=tan(lambda_max)*cos(phi-phi0)
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phi ¬°¤j¶ê¤W°ÊÂI¸g«×¦ì¸m¡]Åܼơ^
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tan(lambda)=tan(lambda_max)*cos(phi-phi0)
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The Principles of Physics and Chemistry
J.B. Brackenridge, R.M. Rosenberg
McGraw-Hills 1970
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Elementary Diffrential Equations and
Boundary Value Problems
W.E. Boyce, R.C. DiPrima
John Willey & Sons 1986
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Plane and Spherical Trigonometry
A.L. Nelson, K.W. Folley
Harper & Brothers Publisher 1943
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¤¤¤å http://freeman2.com/jscirclc.htm
^¤å http://freeman2.com/jscircle.htm
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95,04,11,10,39¤î
C
L
O
S
E
2006-04-11-13-34 start
This paper introduce on-sphere small circle
parametric equation. Which is general and
cover great circle. Initial starting point
is next web page.
On 2005-07-22-07-18-55 access
http://www.physics.orst.edu/~mcintyre/coriolis/index.html
This page has nine animations about
earth rotation and great circle.
On 2005-07-26-19-24-17 find web page
https://commerce.aip.org/servlet/lookup6?cvips=AJPIAS000068000012001097000001
[[
Using great circles to understand
motion on a rotating sphere
D. H. McIntyre
Department of Physics, Oregon State
University, Corvallis, Oregon 97331
Received : 28 January 2000
]]
On 2005-09-23-16-11-50 bought
D. H. McIntyre paper. Read and find
that great circle equation is
tan(lambda)=tan(lambda_max)*cos(phi-phi0)
page 1102, equation (7)
in which
phi is on-circle moving point Longitude
value. (variable)
lambda is on-circle moving point Latitude
value. (variable)
phi0 is on-circle starting point Longitude
value. (constant)
lambda_max is on-circle starting point
Latitude value. (constant)
That time I think great circle motion can
explain Coriolis force better.
[[
BUT !
2006-04-05-04-04 paid attention to the
page I accessed on 2005-07-14-21-34-47
which is
The Coriolis Effect PDF-file. 17 pages.
A general discussion by Anders Persson
of various aspects of the coriolis effect,
including Foucault's Pendulum and Taylor
columns.
http://met.no/english/topics/nomek_2005/coriolis.pdf
C:\$fm\ph\Coriolis\met.no-Coriolis.pdf
say:
Fig. 19: Two erroneous images of the
deflection mechanism: a) conservation
of absolute velocity and b) motion
along great circles. The latter appears
to work for eastward motion, but
not for westward.
]]
I hope to find great circle parametric
representation, so that I can calculate
locus point and plot its path and conclude
great circle theory explain Coriolis force
better. I tried hard look for parametric
equation. Professor D. H. McIntyre paper
is the only one give great circle equation
in parametric form
tan(lambda)=tan(lambda_max)*cos(phi-phi0)
following is key paragraph
[[
A. Great circles
To describe a general great circle,
we use two coordinate
systems as shown in Fig. 5. Both
coordinate systems are
fixed with respect to the sphere.
The unprimed xyz coordinate
system has its origin at the center
of the sphere, with the
z axis through the North Pole.
Points on the sphere are described
using the latitude lambda, measured as
positive (negative)
for the Northern (Southern!)
Hemisphere, and the longitude
phi, measured counterclockwise from
the prime meridian,
which lies in the xz plane. The
equator is the great circle in
the xy plane, and is described
simply by lambda=0. Any other
general great circle is considered
as the equator in a primed
x'y'z' coordinate system, which is
obtained by rotating the
unprimed system first about the
z axis by an angle phi0
and then about the new y' axis by
an angle lambda_max . All
possible great circles can be
accessed using rotation angles
0<= phi0 <=2*pi and 0<=lambda_max<=pi/2.
In the primed coordinate
system, the equation of the great
circle is simply lambda'=0,
where lambda' and phi' are the latitude
and longitude, respectively,
as measured in that system. In
the unprimed coordinate system,
this general great circle reaches
a maximum latitude
lambda_max at a longitude phi0 . By
transforming the equation lambda'=0
back to the unprimed frame
or by requiring that the
normal vector to the great circle
plane be perpendicular to
*** above page 1101; below page 1102
any general vector in that plane,
it is straightforward to show
that the equation of the general
great circle in the unprimed
coordinate system can be written as
tan(lambda)=tan(lambda_max)*cos(phi-phi0)
.....
]]
To me, the key point is
By transforming the equation lambda'=0
back to the unprimed frame.
and
tan(lambda)=tan(lambda_max)*cos(phi-phi0)
Based on this information. Started my
great circle/small circle project.
Thank you, Professor D. H. McIntyre.
Small circle general equation is next
z"" =
sin£\*[cos£N*( cos£f*cos£p*cos£X
+cos£f*sin£p*sin£X
)
+sin£f*sin£N
]
+ cos£\*{-sin£G*(-cos£f*cos£p*sin£X
+cos£f*sin£p*cos£X
)
+cos£G*[-sin£N*(cos£f*cos£p*cos£X
+cos£f*sin£p*sin£X
)
+sin£f*cos£N
]
}
= sin£\
The parameter used is next
P is starting point on circle.
£X is Longitude of P, a constant
£N is Latitude of P, a constant
£p is Longitude of moving point
on circle, a variable.
£f is Latitude of moving point
on circle, a variable.
£G is east deviation angle at P
if point to east, £G=0.
-90¢X<£G<90¢X
£\ is earth deviation angle at P
if point to earth center, £\=0.
£\=0 get great circle.
-90¢X<£\<90¢X¡A
All parameters are relative to ground
(before rotation) coordinate system.
Only set z"" = sin£\ is IN AFTER-ROTATION
COORDINATE SYSTEM.
Equation derivation is in next picture
This page has equation derivation.
This page target at Chinese reader.
If you want to read this paper, you
need find someone to translate for
you.
Any one translate this page, Freeman
express welcome and thanks. The only
requirement for translation is
CORRECTNESS. Author and translator
have the responsibility to bring
correct concept to reader.
Freeman's paper has no proofreading,
the only external verification is
great circle distance from other's
page and from books. All confirmed
with Freeman's equation. But other
than great circle distance, the
correctness of derived equations and
locus points etc. NO CONFIRMATION !!
Translator please proofread for me,
please correct any error if you find
them. Thank you.
The address of this page is
http://freeman2.com/tutc0002.htm
After upload this page, I will improve
the program I wrote, which help me to
check all question I got. Then I will
upload the program which can calculate
locus points, great circle distance etc.
The program URL will be
English http://freeman2.com/jscircle.htm
Chinese http://freeman2.com/jscirclc.htm
Thank you for visiting Freeman's page.
Freeman 2006-04-11-14-31.
[[[[[
2005-07-26-19-24-17
https://commerce.aip.org/servlet/lookup6?cvips=AJPIAS000068000012001097000001
C:\$fm\ph\Coriolis\Coriolis-orst-aip.org-buy01.htm
Journal Volume Page Seq#
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Using great circles to understand motion on a rotating sphere
D. H. McIntyre
Department of Physics, Oregon State University, Corvallis, Oregon 97331
Received : 28 January 2000
Abstract
Motion observed in a rotating frame of
reference is generally explained by invoking
inertial forces. While this approach
simplifies some problems, there is often
little physical insight into the motion,
in particular into the effects of the
Coriolis force. To aid in the understanding
of three-dimensional inertial forces,
motion on a rotating sphere is considered
from the points of view of an inertial
observer and of an observer fixed on the
sphere. The inertial observer observes
the motion to be along a great circle
fixed in the inertial frame, in analogy
with simple straight-line motion in the
two-dimensional case. This simple
"straight-line" viewpoint of the inertial
observer is reconciled qualitatively and
quantitatively with the view of the
rotating observer that requires inertial
forces in order to account for the motion.
Through a succession of simple examples,
the Coriolis and centrifugal effects are
isolated and illustrated, as well as
effects due to the curvilinear nature of
motion on a sphere.
c2000 American Association of Physics Teachers.
Purchase Price: $ 18.50 US
R E M I N D E R
If you or your institution subscribe to this journal,
please enter here to access the full text article
]]]]]
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¤@¡B Classical Dynamics of Particles and Systems
second ed. Jerry B Marion.
Academic Press 1970 ISBN 0-12-472252-0
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¤G¡BPrinciples of Dynamics, Donald T. Greenwood
Prentice-Hall, Inc. 1965
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¤T¡BThe Principles of Physics and Chemistry
J.Bruce Brackenbridge, Robert M. Rosenberg
McGraw-Hill 1970
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Plane and spherical trigonometry
Alfred L. Nelson and Karl W. Folley
Harper & Brothers Publishers 1943
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