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geodesic invalidity



 
 
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  #1  
Old April 2nd 06 posted to sci.physics.relativity
passwd
external usenet poster
 
Posts: 1
Default geodesic invalidity

okay, geodesic paths are bery nice,
but whay are thay circular, whay
is tha eart revolving and rotating

whay is tha moon not rotating
wrt earth as being coupled with
a cable

so by havin a cable between earth
and moon we get free energy directly
from geodesic, am I cool?

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  #2  
Old April 2nd 06 posted to sci.physics.relativity
The Ghost In The Machine
external usenet poster
 
Posts: 603
Default geodesic invalidity

On Sun, 02 Apr 2006 09:15:55 -0700, passwd wrote:

okay, geodesic paths are bery nice,
but whay are thay circular, whay
is tha eart revolving and rotating


They do not have to be circular. Most orbits, in fact, are not.


whay is tha moon not rotating
wrt earth as being coupled with
a cable


The moon is rotating -- it rotates once a month, keeping the same side to
the Earth.


so by havin a cable between earth
and moon we get free energy directly
from geodesic, am I cool?


No, because the Moon does not sit over the same point on the Earth. It
might, eventually, far far in the future, but were one to dangle a cable
from the Moon to the Earth (assuming one could do so without it snapping
from its own weight) the end would be moving at about 500 m/s relative to
a point on the Earth's surface.

Since the Moon's orbit is inclined, things go from bad to worse. Since
the Moon's orbit is not perfectly circular, you have a choice of letting
the cable end drag on the ground causing widespread destruction (or simply
breaking), and not being able to reach the cable end because it's too far
up.

--
#191,
It's still legal to go .sigless.

  #3  
Old April 2nd 06 posted to sci.physics.relativity
Eric Gisse
external usenet poster
 
Posts: 17,691
Default geodesic invalidity


The Ghost In The Machine wrote:

[snip]

This is a honest troll, he is just acting stupid. Ignore him and he
will go away as he did before.

  #4  
Old April 6th 06 posted to sci.physics.relativity
wet harmony
external usenet poster
 
Posts: 5
Default geodesic invalidity


The Ghost In The Machine wrote:
On Sun, 02 Apr 2006 09:15:55 -0700, passwd wrote:

okay, geodesic paths are bery nice,
but whay are thay circular, whay
is tha eart revolving and rotating


They do not have to be circular. Most orbits, in fact, are not.


stop playin smartass

eliptical then, is tha same ****



whay is tha moon not rotating
wrt earth as being coupled with
a cable


The moon is rotating -- it rotates once a month, keeping the same side to
the Earth.


that was tha question, whay tha same side?



so by havin a cable between earth
and moon we get free energy directly
from geodesic, am I cool?


No, because the Moon does not sit over the same point on the Earth. It
might, eventually, far far in the future, but were one to dangle a cable
from the Moon to the Earth (assuming one could do so without it snapping
from its own weight) the end would be moving at about 500 m/s relative to
a point on the Earth's surface.


no problemo

we anchore tha cable to a track

every country takes tha responsability ta build the track
than tap energy when the cable pass tha country


Since the Moon's orbit is inclined, things go from bad to worse. Since


even better, we get even more energy

we make the cables elastic

when onae
the Moon's orbit is not perfectly circular, you have a choice of letting
the cable end drag on the ground causing widespread destruction (or simply
breaking), and not being able to reach the cable end because it's too far
up.

--
#191,
It's still legal to go .sigless.


  #5  
Old April 6th 06 posted to sci.physics.relativity
puppet_sock@hotmail.com
external usenet poster
 
Posts: 741
Default geodesic invalidity

wet harmony wrote:
The Ghost In The Machine wrote:
On Sun, 02 Apr 2006 09:15:55 -0700, passwd wrote:

okay, geodesic paths are bery nice,
but whay are thay circular, whay
is tha eart revolving and rotating


They do not have to be circular. Most orbits, in fact, are not.


stop playin smartass

eliptical then, is tha same ****


So, your question is, why are orbits shaped the way they are?
The general relativity answer is, because that's the solution to
the Einstein field equations.

The Earth continues to rotate because it has angular momentum,
and angular momentum is conserved.

whay is tha moon not rotating
wrt earth as being coupled with
a cable


The moon is rotating -- it rotates once a month, keeping the same side to
the Earth.


that was tha question, whay tha same side?


The moon is tide locked. It has lost just enough rotational energy
that it faces the Earth with the same side all the time. This was
produced by interactions with the moon's very slightly irregular
shape.

Note that the moon does not perfectly face the same way all the
time. It actually "wobbles" a bit because its orbit is not circular.
These are called librations. It lets us see something like an extra
15 degrees in each direction, left and right.

so by havin a cable between earth
and moon we get free energy directly
from geodesic, am I cool?


No, because the Moon does not sit over the same point on the Earth. It
might, eventually, far far in the future, but were one to dangle a cable
from the Moon to the Earth (assuming one could do so without it snapping
from its own weight) the end would be moving at about 500 m/s relative to
a point on the Earth's surface.


no problemo

we anchore tha cable to a track

every country takes tha responsability ta build the track
than tap energy when the cable pass tha country


Since the Moon's orbit is inclined, things go from bad to worse. Since


even better, we get even more energy

we make the cables elastic


Supposing the cable were only as dense as air (I don't know what
you would make it of, but let's have some fun) what would the total
strength of this cable have to be just to support its own weight?
Your homework is to look up the density of air, then figure out how
much force would be exerted b acolumn of air that reached the moon.

How far North and South does the Earth end of the cable have to go?
(It's your homework to look up how much the moon's orbit is tilted
relative to the Earth's equator, and so how many degrees the cable
would have to move to stay the shortest it could be.) Alternatively,
how much cable would have to be let out then taken back in for each
orbit of the moon?

How fast would the cable have to be moving along the surface of the
Earth supposing it is close to the equator? How much noise does
this make? What happens when the cable passes a mountain range?
Or a river or ocean?

Right now we can get some energy out of the Earth/moon system
by getting energy from tides.
Socks

  #6  
Old April 10th 06 posted to sci.physics.relativity
Paul B. Andersen
external usenet poster
 
Posts: 1,662
Default geodesic invalidity

wet harmony wrote:
The Ghost In The Machine wrote:

On Sun, 02 Apr 2006 09:15:55 -0700, passwd wrote:


okay, geodesic paths are bery nice,
but whay are thay circular, whay
is tha eart revolving and rotating


They do not have to be circular. Most orbits, in fact, are not.



stop playin smartass

eliptical then, is tha same ****


whay is tha moon not rotating
wrt earth as being coupled with
a cable


The moon is rotating -- it rotates once a month, keeping the same side to
the Earth.



that was tha question, whay tha same side?


so by havin a cable between earth
and moon we get free energy directly
from geodesic, am I cool?


No, because the Moon does not sit over the same point on the Earth. It
might, eventually, far far in the future, but were one to dangle a cable
from the Moon to the Earth (assuming one could do so without it snapping
from its own weight) the end would be moving at about 500 m/s relative to
a point on the Earth's surface.



no problemo

we anchore tha cable to a track

every country takes tha responsability ta build the track
than tap energy when the cable pass tha country


Don't you think this is a more practical approach?
http://home.clara.net/darvill/altenerg/tidal.htm

Paul
  #7  
Old April 11th 06 posted to sci.physics.relativity
Machu Picchu
external usenet poster
 
Posts: 9
Default geodesic invalidity


wrote:
wet harmony wrote:
The Ghost In The Machine wrote:
On Sun, 02 Apr 2006 09:15:55 -0700, passwd wrote:

okay, geodesic paths are bery nice,
but whay are thay circular, whay
is tha eart revolving and rotating

They do not have to be circular. Most orbits, in fact, are not.


stop playin smartass

eliptical then, is tha same ****


So, your question is, why are orbits shaped the way they are?
The general relativity answer is, because that's the solution to
the Einstein field equations.

The Earth continues to rotate because it has angular momentum,
and angular momentum is conserved.

whay is tha moon not rotating
wrt earth as being coupled with
a cable

The moon is rotating -- it rotates once a month, keeping the same side to
the Earth.


that was tha question, whay tha same side?


The moon is tide locked. It has lost just enough rotational energy
that it faces the Earth with the same side all the time. This was
produced by interactions with the moon's very slightly irregular
shape.

Note that the moon does not perfectly face the same way all the
time. It actually "wobbles" a bit because its orbit is not circular.
These are called librations. It lets us see something like an extra
15 degrees in each direction, left and right.

so by havin a cable between earth
and moon we get free energy directly
from geodesic, am I cool?

No, because the Moon does not sit over the same point on the Earth. It
might, eventually, far far in the future, but were one to dangle a cable
from the Moon to the Earth (assuming one could do so without it snapping
from its own weight) the end would be moving at about 500 m/s relative to
a point on the Earth's surface.


no problemo

we anchore tha cable to a track

every country takes tha responsability ta build the track
than tap energy when the cable pass tha country


Since the Moon's orbit is inclined, things go from bad to worse. Since


even better, we get even more energy

we make the cables elastic


Supposing the cable were only as dense as air (I don't know what
you would make it of, but let's have some fun) what would the total
strength of this cable have to be just to support its own weight?
Your homework is to look up the density of air, then figure out how
much force would be exerted b acolumn of air that reached the moon.

How far North and South does the Earth end of the cable have to go?
(It's your homework to look up how much the moon's orbit is tilted
relative to the Earth's equator, and so how many degrees the cable
would have to move to stay the shortest it could be.) Alternatively,
how much cable would have to be let out then taken back in for each
orbit of the moon?

How fast would the cable have to be moving along the surface of the
Earth supposing it is close to the equator? How much noise does
this make? What happens when the cable passes a mountain range?
Or a river or ocean?

Right now we can get some energy out of the Earth/moon system
by getting energy from tides.
Socks


cool post man, thanks

so tha moon has more iron on one
side than on tha other side, becus if
it were uniform distributed there been
no phaselockin

whay is tha earth not phase locked
ta tha sun

  #8  
Old April 11th 06 posted to sci.physics.relativity
Machu Picchu
external usenet poster
 
Posts: 9
Default geodesic invalidity


Paul B. Andersen wrote:
wet harmony wrote:
The Ghost In The Machine wrote:

On Sun, 02 Apr 2006 09:15:55 -0700, passwd wrote:


okay, geodesic paths are bery nice,
but whay are thay circular, whay
is tha eart revolving and rotating

They do not have to be circular. Most orbits, in fact, are not.



stop playin smartass

eliptical then, is tha same ****


whay is tha moon not rotating
wrt earth as being coupled with
a cable

The moon is rotating -- it rotates once a month, keeping the same side to
the Earth.



that was tha question, whay tha same side?


so by havin a cable between earth
and moon we get free energy directly
from geodesic, am I cool?

No, because the Moon does not sit over the same point on the Earth. It
might, eventually, far far in the future, but were one to dangle a cable
from the Moon to the Earth (assuming one could do so without it snapping
from its own weight) the end would be moving at about 500 m/s relative to
a point on the Earth's surface.



no problemo

we anchore tha cable to a track

every country takes tha responsability ta build the track
than tap energy when the cable pass tha country


Don't you think this is a more practical approach?
http://home.clara.net/darvill/altenerg/tidal.htm

Paul


i kno that approach, but tha passin cable is more
simple

evrybody can catch a cable

 




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