| Topic: |
Science > Physics |
| User: |
"" |
| Date: |
10 Feb 2004 10:15:34 PM |
| Object: |
Re: Is a geodesic straight? |
In article <G-OdnV8CIfZw7LTdRVn-vg@comcast.com>, tadchem
<tadchemNOSPAM@comcast.net> writes:
"A geodesic is a locally length-minimizing curve. Equivalently, it is a path
that a particle which is not accelerating would follow. In the plane, the
geodesics are straight lines. On the sphere, the geodesics are great circles
(like the equator). The geodesics in a space depend on the Riemannian
metric, which affects the notions of distance and acceleration."
http://mathworld.wolfram.com/Geodesic.html
"Euclid defined ... a straight line as a line which 'lies evenly with the
points on itself.'"
http://mathworld.wolfram.com/Line.html
Cut the wolfram baloney: A straight line is the intersection of two flat
planes, and is straight any way it is looked at:
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| User: "Uncle Al" |
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| Title: Re: Is a geodesic straight? |
11 Feb 2004 10:26:22 AM |
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wrote:
In article <G-OdnV8CIfZw7LTdRVn-vg@comcast.com>, tadchem
<tadchemNOSPAM@comcast.net> writes:
"A geodesic is a locally length-minimizing curve. Equivalently, it is a path
that a particle which is not accelerating would follow. In the plane, the
geodesics are straight lines. On the sphere, the geodesics are great circles
(like the equator). The geodesics in a space depend on the Riemannian
metric, which affects the notions of distance and acceleration."
http://mathworld.wolfram.com/Geodesic.html
"Euclid defined ... a straight line as a line which 'lies evenly with the
points on itself.'"
http://mathworld.wolfram.com/Line.html
Cut the wolfram baloney: A straight line is the intersection of two flat
planes, and is straight any way it is looked at:
Hey Dumb Donny *****, what is a straight line on the surface of a
sphere? You live (if that is called living) on the surface of a
spehre, Dumb Donny *****. Folks who move stuff in ships or
airplanes know there is always a minimal distance path from here to
there, Dumb Donny *****. Hey Dumb Donny *****, how do they find
the minmal distance path?
How do they find the straight line, Dumb Donny *****, without
intersecting two flat planes?
--
Uncle Al
http://www.mazepath.com/uncleal/
(Toxic URL! Unsafe for children and most mammals)
"Quis custodiet ipsos custodes?" The Net!
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| User: "Spaceman" |
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| Title: Re: Is a geodesic straight? |
11 Feb 2004 06:10:46 PM |
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"Uncle Al" <UncleAl0@hate.spam.net> wrote in message news:402A57AE.D5FC4E63@hate.spam.net...
Hey Dumb Donny *****, what is a straight line on the surface of a
sphere?
It's a curved line you dingbat, dung eating, time travel worshipping dipwad!
Uncle Al,
Are you truly that stupid to think a line on the surface of a
sphere is truly straight and has no curves?
<ROFLOL>
Boy you are brainwashed!
<LOL>
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| User: "Robert J. Kolker" |
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| Title: Re: Is a geodesic straight? |
11 Feb 2004 08:12:55 PM |
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Spaceman wrote:
Are you truly that stupid to think a line on the surface of a
sphere is truly straight and has no curves?
Of course it is curved, because the surface it lies on is curved, but it
is the shortest path, given the constraint of staying on the surface.
Bob Kolker
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| User: "Spaceman" |
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| Title: Re: Is a geodesic straight? |
12 Feb 2004 04:38:41 PM |
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"Robert J. Kolker" <bobkolker@NOSPAMcomcast.net> wrote in message news:HiBWb.10214$jk2.31848@attbi_s53...
Spaceman wrote:
Are you truly that stupid to think a line on the surface of a
sphere is truly straight and has no curves?
Of course it is curved, because the surface it lies on is curved, but it
is the shortest path, given the constraint of staying on the surface.
Again you are constraining your brain.
The shortest distance is not curved at all.
And it is not the "shortest path"
It is the shortest possible travel route.
Not the shortest path.
and...
constraining to a round surface automatically makes the
route non straight.
Still can't grasp "straight" huh?
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