What makes The Earth "spin"

This is why all launchpads on Earth are
directed toward east AND are as close to the equator as they can be.

Vandenberg AFB on the U.S. west coast is used for polar orbit launches.
oc

Bert wrote,

The eye (Great Red Spot)looks like a
chaotic condition of the
atmosphere,possibly formed from
Jupiter's speed of spin,and that means
its area of spin(like a hurricane) must be
at its equator.

Bert, that's much in line with a theory I read many years ago which goes
like this (paraphrasing)-

In fluid dynamics, when a linear flow passes a critical velocity, it
must break into a vortex, as seen in a tornado, waterspout, bathtub
drain and the like. On Jupiter, the speed differentials between the
laterally-moving bands of the atmosphere have passed this critical
velocity, with the resultant vortex of the Great Red Spot. Its
permanence is the result of the permanence of those wind-speed
differentials. In other words, if the winds would slow down and the
speed differentials decreased sufficiently, the GRS would shrink and
vanish. =A0oc

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Bert wrote,

The eye (Great Red Spot)looks like a
chaotic condition of the
atmosphere,possibly formed from
Jupiter's speed of spin,and that means
its area of spin(like a hurricane) must be
at its equator.

Bert, that's much in line with a theory I read many years ago which goes
like this (paraphrasing)-

In fluid dynamics, when a linear flow passes a critical velocity, it
must break into a vortex, as seen in a tornado, waterspout, bathtub
drain and the like. On Jupiter, the speed differentials between the
laterally-moving bands of the atmosphere have passed this critical
velocity, with the resultant vortex of the Great Red Spot. Its
permanence is the result of the permanence of those wind-speed
differentials. In other words, if the winds would slow down and the
speed differentials decreased sufficiently, the GRS would shrink and
vanish. =A0oc

Anti-spam address: oldcoot88atwebtv.net
Change 'at' to@

On Mon, 22 Sep 2003 18:15:33 -0700 (PDT), (Bill Sheppard)
wrote:

This is why all launchpads on Earth are
directed toward east AND are as close to the equator as they can be.

Vandenberg AFB on the U.S. west coast is used for polar orbit launches.
oc

Yup! I forgot polar orbits. Notice that theses are very energy-expensive. Have
you seen http://liftoff.msfc.nasa.gov/RealTim.../JTrack3D.html ?

Good night!

Benoît Morrissette

On Mon, 22 Sep 2003 18:15:33 -0700 (PDT), (Bill Sheppard)
wrote:

This is why all launchpads on Earth are
directed toward east AND are as close to the equator as they can be.

Vandenberg AFB on the U.S. west coast is used for polar orbit launches.
oc

Yup! I forgot polar orbits. Notice that theses are very energy-expensive. Have
you seen http://liftoff.msfc.nasa.gov/RealTim.../JTrack3D.html ?

Good night!

Benoît Morrissette

Benoit:

An excellent sight.

Using Java place a point on a satellite, and the perspective shows 100s
of satellites that are visible in terms of the motion of the viewing point.

How did so many satellites get lined up in such a neat circular row and
spacing around the earth?

Ralph Hertle









Benoit Morrissette wrote:
On Mon, 22 Sep 2003 18:15:33 -0700 (PDT), (Bill Sheppard)
wrote:


This is why all launchpads on Earth are
directed toward east AND are as close to the equator as they can be.

Vandenberg AFB on the U.S. west coast is used for polar orbit launches.
oc


Yup! I forgot polar orbits. Notice that theses are very energy-expensive. Have
you seen http://liftoff.msfc.nasa.gov/RealTim.../JTrack3D.html ?

Good night!

Benoît Morrissette

Benoit:

An excellent sight.

Using Java place a point on a satellite, and the perspective shows 100s
of satellites that are visible in terms of the motion of the viewing point.

How did so many satellites get lined up in such a neat circular row and
spacing around the earth?

Ralph Hertle









Benoit Morrissette wrote:
On Mon, 22 Sep 2003 18:15:33 -0700 (PDT), (Bill Sheppard)
wrote:


This is why all launchpads on Earth are
directed toward east AND are as close to the equator as they can be.

Vandenberg AFB on the U.S. west coast is used for polar orbit launches.
oc


Yup! I forgot polar orbits. Notice that theses are very energy-expensive. Have
you seen http://liftoff.msfc.nasa.gov/RealTim.../JTrack3D.html ?

Good night!

Benoît Morrissette

G=EMC^2 Glazier wrote:

Hi Odysseus I still don't know how deep is Jupiter atmosphere. We can
say the Earth's is 25 miles deep.Jupiter's atmosphere can't be to heavy
having so much hydrogen and helium.in proportion to the earth's
atmosphere,that has really none of both. Still don't know why it has
such a fast spin,and I think this fast spin needs more thought. Bert

Most of Jupiter's atmosphere is at a very high pressure, more than
making up for the lower molecular weights of He and H_2 as compared
to the earth's N_2 and O_2. The NASA website I cited considers the
"surface" to be where the pressure is 1 bar, close to the standard
pressure on the Earth's surface. The planet's average density is
about twice that of water, so most of the gas is much 'thicker' than
air, denser in fact than most of the liquids we encounter in everyday life.

--
Odysseus

G=EMC^2 Glazier wrote:

Hi Odysseus I still don't know how deep is Jupiter atmosphere. We can
say the Earth's is 25 miles deep.Jupiter's atmosphere can't be to heavy
having so much hydrogen and helium.in proportion to the earth's
atmosphere,that has really none of both. Still don't know why it has
such a fast spin,and I think this fast spin needs more thought. Bert

Most of Jupiter's atmosphere is at a very high pressure, more than
making up for the lower molecular weights of He and H_2 as compared
to the earth's N_2 and O_2. The NASA website I cited considers the
"surface" to be where the pressure is 1 bar, close to the standard
pressure on the Earth's surface. The planet's average density is
about twice that of water, so most of the gas is much 'thicker' than
air, denser in fact than most of the liquids we encounter in everyday life.

--
Odysseus

On Wed, 24 Sep 2003 00:22:06 GMT, Ralph Hertle wrote:

Benoit:

An excellent sight.

Using Java place a point on a satellite, and the perspective shows 100s
of satellites that are visible in terms of the motion of the viewing point.

How did so many satellites get lined up in such a neat circular row and
spacing around the earth?

Ralph Hertle


It is done on purpose, they are all on a geostationary orbit. It is a special
orbit about 36 000 kM above Earth's surface where the satellite revolve around
earth in... 24 hours! So they appear to stay motionless over Earth's
surface. Absolutly great for TV satellites and other kind of communication.
Good too for meteo photos


Benoit Morrissette wrote:
On Mon, 22 Sep 2003 18:15:33 -0700 (PDT), (Bill Sheppard)
wrote:


This is why all launchpads on Earth are
directed toward east AND are as close to the equator as they can be.

Vandenberg AFB on the U.S. west coast is used for polar orbit launches.
oc


Yup! I forgot polar orbits. Notice that theses are very energy-expensive. Have
you seen http://liftoff.msfc.nasa.gov/RealTim.../JTrack3D.html ?

Good night!

Benoît Morrissette

Good night!

Benoît Morrissette