Re: Earth's 1st AirConditioner; coolant of IceDust + ozone replenishment

From: bz (bz+sp_at_ch100-5.chem.lsu.edu)
Date: 03/23/05 

Date: Wed, 23 Mar 2005 18:15:35 +0000 (UTC)

"G. R. L. Cowan" <gcowan@eagle.ca> wrote in
news:4241B26C.E2928F47@eagle.ca:

> bz wrote:
>>
>> "Quantum Mirror" <junebug@pgrb.com> wrote in
>> news:1111595616.843983.200440 @f14g2000cwb.googlegroups.com:
>>
>> > The answer is panels in sycronus orbit between us and the sun that
>> > are adjustable, and control the amount of sunlight reaching us. You
>> > would need a frame, gyros, solar panels, and electric motors to open
>> > and close the blind panels. each day the world solar control could
>> > open panels when we need more heat and close them when we don't! This
>> > took about 5 minutes for me to create this idea.
>> >
>>
>> Have you looked at the problem of hanging something
>> 'in synchronous orbit' between the earth and the sun?
>>
>> According to the physics of orbital bodies, in order for something to
>> move around the sun at the same rate as the earth, it must be the same
>> distance from the sun as the earth.
>
> ... if the sun and the earth were of equal mass.
> The SOHO observatory is in fact at the equilibrium point,
> which is ~1 percent of the way to the sun.
>

Not quite:
[quote]
That view of the Sun is achieved by operating SOHO from a permanent
vantage point 1.5 million kilometers sunward of the Earth in a halo orbit
around the L1 Lagrangian point. [unquote]

The L1 LaGrange point is NOT a place that something can be hung and remain
there.

http://map.gsfc.nasa.gov/m_mm/ob_techorbit1.html
[quote]
The L1 and L2 points are unstable on a time scale of approximately 23
days, which requires satellites parked at these positions to undergo
regular course and attitude corrections. [unquote] 

-- 
bz
please pardon my infinite ignorance, the set-of-things-I-do-not-know is an
infinite set.
bz+sp@ch100-5.chem.lsu.edu   remove ch100-5 to avoid spam trap

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