"stone thrown west goes further"

This statement appears in club magazine but can this be true?

"Because of the earth's rotation an object thrown west goes further".

Nytecam

nytecam wrote:
This statement appears in club magazine but can this be true?

"Because of the earth's rotation an object thrown west goes further".


Nytecam



If you use Earth coordinates, no!
But relative to the Sun....

j

Guess it depends on what you are measuring it's movement relative to.


On Fri, 18 Nov 2005 08:25:42 +0000, nytecam
wrote:


This statement appears in club magazine but can this be true?

"Because of the earth's rotation an object thrown west goes further".


Nytecam

nytecam wrote:
This statement appears in club magazine but can this be true?
"Because of the earth's rotation an object thrown west goes further".


Galileo said no. But you can do the measurement yourself.

Pretty sure Galileo was observing from a point on earth. If he were
observing from the sun and saw two rocks thrown from the earth, one in
the direction of travel and one against the direction of tavel, what
would he have seen?


I think about a century ago some guy said something about things
depending on the observers' position? Could be wrong though, often
am.


On Fri, 18 Nov 2005 13:49:34 GMT, Sam Wormley
wrote:

nytecam wrote:
This statement appears in club magazine but can this be true?
"Because of the earth's rotation an object thrown west goes further".


Galileo said no. But you can do the measurement yourself.

Sailing Away wrote:
Pretty sure Galileo was observing from a point on earth. If he were
observing from the sun and saw two rocks thrown from the earth, one in
the direction of travel and one against the direction of tavel, what
would he have seen?

When I throw a stone, it is usually with respect to a point on earth.
Observers with respect to the Sun would need to take into account
the Earth's rotation at latitude (and longitude) as well as the Earth's
motion along it's elliptical orbit.

But the point is that an observer stationary on the Earth's surface
would see no difference* in the stones throw east vs west.

*without some very sophisticated instruments

On Fri, 18 Nov 2005 17:28:33 GMT, Sam Wormley
wrote:

When I throw a stone, it is usually with respect to a point on earth.
Observers with respect to the Sun would need to take into account
the Earth's rotation at latitude (and longitude) as well as the Earth's
motion along it's elliptical orbit.

For a qualitative analysis, the Earth's orbital motion is all you need
to worry about. No matter where you are on the Earth, and no matter
which way you throw a stone (by hand), it will always land to the east
of its initial location in heliocentric terms.

But the point is that an observer stationary on the Earth's surface
would see no difference* in the stones throw east vs west.

*without some very sophisticated instruments

Glad you added that caveat g.

_________________________________________________

Chris L Peterson
Cloudbait Observatory
http://www.cloudbait.com

Chris L Peterson wrote:
For a qualitative analysis, the Earth's orbital motion is all you need
to worry about. No matter where you are on the Earth, and no matter
which way you throw a stone (by hand), it will always land to the east
of its initial location in heliocentric terms.

schlyter
Even from one of the poles?
/schlyter

--
Brian Tung
The Astronomy Corner at http://astro.isi.edu/
Unofficial C5+ Home Page at http://astro.isi.edu/c5plus/
The PleiadAtlas Home Page at http://astro.isi.edu/pleiadatlas/
My Own Personal FAQ (SAA) at http://astro.isi.edu/reference/faq.txt

Chris L Peterson wrote:
For a qualitative analysis, the Earth's orbital motion is all you need
to worry about. No matter where you are on the Earth, and no matter
which way you throw a stone (by hand), it will always land to the east
of its initial location in heliocentric terms.

Actually, I'm not sure what you mean by "heliocentric" here. Do you
mean as seen from the Sun, but aligning your coordinates with the Earth's
axis, or with the ecliptic pole, or what? Can you clarify?

--
Brian Tung
The Astronomy Corner at http://astro.isi.edu/
Unofficial C5+ Home Page at http://astro.isi.edu/c5plus/
The PleiadAtlas Home Page at http://astro.isi.edu/pleiadatlas/
My Own Personal FAQ (SAA) at http://astro.isi.edu/reference/faq.txt

On Fri, 18 Nov 2005 10:28:20 -0800 (PST), (Brian Tung)
wrote:

Chris L Peterson wrote:
For a qualitative analysis, the Earth's orbital motion is all you need
to worry about. No matter where you are on the Earth, and no matter
which way you throw a stone (by hand), it will always land to the east
of its initial location in heliocentric terms.

Actually, I'm not sure what you mean by "heliocentric" here. Do you
mean as seen from the Sun, but aligning your coordinates with the Earth's
axis, or with the ecliptic pole, or what? Can you clarify?

Agreed, there are a few ways of looking at it. I am picturing the motion
of the stone from the Sun, where "east" is the direction the Earth is
moving in its orbit. And I don't think it matters where you are on the
Earth, including the poles. The stone should always land farther along
the path of the Earth's orbit.

_________________________________________________

Chris L Peterson
Cloudbait Observatory
http://www.cloudbait.com