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From: andrel
Subject: Re: This is relevant to my interests
Date: 13 Feb 2012 15:32:09
Message: <4F397349.8040002@gmail.com>
On 13-2-2012 21:16, Le_Forgeron wrote:
> Le 13/02/2012 20:52, andrel nous fit lire :
>> he southern hemisphere ocean onto the deserts of the equator (possibly
>> mixed with a monty python intro).
>
> Equator (as a geographical location: the central belt) is not a sahara
> like desert, it's very green).

A couple of months ago I was in Arusha just over 3 degrees south of the 
equator. I would not describe the scenery as very green, but definitely 
no desert. But don't blame me, blame the other guy.

> The desert part are more likely to start at 20° (or 25°) from equator on
> each direction and due to the convection cells of the atmosphere (and
> it's moving with seasons, it's call The Doldrums... huge vertical winds,
> nearly none horizontal, nothing to move clouds into rain over land)
>
> BTW, there is more part of Africa (continent) in the Northern hemisphere
> than in Southern.
> (that's not the case for South America, Australia nor Antarctica)
>
> Also, at the exit of a glacial era, the weather might have been a lot
> different than the sunny desert. (for instance, London would have been
> under a lot (more!) of ice and snow by the time of the first simian
> walking on only two feet and keeping tools in the savannah of Africa)
>
> (P.S: I said Australia, I'm going to be flamed by NZ and co, as it would
> be called Oceania... guess what is the biggest island ?)

Much of that biggest island is desert. I have been in both and I prefer 
the nature of NZ.

-- 
tip: do not run in an unknown place when it is too dark to see the 
floor, unless you prefer to not use uppercase.


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From: Darren New
Subject: Re: This is relevant to my interests
Date: 13 Feb 2012 22:53:26
Message: <4f39dab6$1@news.povray.org>
On 2/13/2012 12:16, Le_Forgeron wrote:
> BTW, there is more part of Africa (continent) in the Northern hemisphere
> than in Southern.


Fun fact: If you took all the sand in northern africa and spread it out 
flat, it would cover an area the size of the Sahara!

-- 
Darren New, San Diego CA, USA (PST)
   People tell me I am the counter-example.


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From: Bill Pragnell
Subject: Re: This is relevant to my interests
Date: 14 Feb 2012 04:10:00
Message: <web.4f3a24acef02cb515b7d07940@news.povray.org>
Darren New <dne### [at] sanrrcom> wrote:
> On 2/13/2012 12:16, Le_Forgeron wrote:
> > BTW, there is more part of Africa (continent) in the Northern hemisphere
> > than in Southern.
>
>
> Fun fact: If you took all the sand in northern africa and spread it out
> flat, it would cover an area the size of the Sahara!

Did you know: if all the people in the world linked arms around the equator,
two-thirds of them would drown.


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From: Stephen
Subject: Re: This is relevant to my interests
Date: 14 Feb 2012 04:24:01
Message: <4f3a2831$1@news.povray.org>
On 14/02/2012 9:09 AM, Bill Pragnell wrote:
> Darren New<dne### [at] sanrrcom>  wrote:
>> On 2/13/2012 12:16, Le_Forgeron wrote:
>>> BTW, there is more part of Africa (continent) in the Northern hemisphere
>>> than in Southern.
>>
>>
>> Fun fact: If you took all the sand in northern africa and spread it out
>> flat, it would cover an area the size of the Sahara!
>
> Did you know: if all the people in the world linked arms around the equator,
> two-thirds of them would drown.
>
>
Did you know that if you put all the students who fell asleep in 
lectures, head to toe on the ground? They would be more comfortable.

-- 
Regards
     Stephen


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From: Paul Fuller
Subject: Re: This is relevant to my interests
Date: 14 Feb 2012 05:46:27
Message: <4f3a3b83$1@news.povray.org>
On 14/02/2012 8:24 PM, Stephen wrote:
> On 14/02/2012 9:09 AM, Bill Pragnell wrote:
>> Darren New<dne### [at] sanrrcom> wrote:
>>> On 2/13/2012 12:16, Le_Forgeron wrote:
>>>> BTW, there is more part of Africa (continent) in the Northern
>>>> hemisphere
>>>> than in Southern.
>>>
>>>
>>> Fun fact: If you took all the sand in northern africa and spread it out
>>> flat, it would cover an area the size of the Sahara!
>>
>> Did you know: if all the people in the world linked arms around the
>> equator,
>> two-thirds of them would drown.
>>
>>
> Did you know that if you put all the students who fell asleep in
> lectures, head to toe on the ground? They would be more comfortable.
>

Did you know that in a single trip from Sydney to London a Boeing 747 
will use approximately as much fuel as one going the other way.


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From: Orchid Win7 v1
Subject: Re: This is relevant to my interests
Date: 14 Feb 2012 08:49:58
Message: <4f3a6686$1@news.povray.org>
On 14/02/2012 10:46, Paul Fuller wrote:

> Did you know that in a single trip from Sydney to London a Boeing 747
> will use approximately as much fuel as one going the other way.

I'm going to contest this one. I was under the impression that the 
various jet streams make it significantly more fuel-efficient in one 
direction than the other...


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From: Orchid Win7 v1
Subject: Re: This is relevant to my interests
Date: 14 Feb 2012 09:27:02
Message: <4f3a6f36$1@news.povray.org>
On 13/02/2012 19:30, Warp wrote:
> Orchid Win7 v1<voi### [at] devnull>  wrote:
>> Really? I thought that apart from South America, most of the southern
>> hemisphere was water.
>
>> OK. That's interesting. I always thought the equator was all desert...
>
>    I really think you should cut the "being deliberately ignorant of things
> that would become clear with 10 seconds of googling" trait.

Well, clearly roses don't grow in a desert, so my information cannot be 
correct. I was merely expressing surprise at that.

The equator is the hottest place on Earth. You would logically think 
that this would be desert, and the slightly cooler lands north and south 
of it would be tropical jungle. Apparently this is not the case somehow 
- a surprising and interesting result...


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From: Paul Fuller
Subject: Re: This is relevant to my interests
Date: 14 Feb 2012 11:15:52
Message: <4f3a88b8$1@news.povray.org>
On 15/02/2012 12:49 AM, Orchid Win7 v1 wrote:
> On 14/02/2012 10:46, Paul Fuller wrote:
>
>> Did you know that in a single trip from Sydney to London a Boeing 747
>> will use approximately as much fuel as one going the other way.
>
> I'm going to contest this one. I was under the impression that the
> various jet streams make it significantly more fuel-efficient in one
> direction than the other...

Contest away.  I expected nothing less.

London to Sydney is normally going to spend a lower proportion of time 
in favourable jet streams than say New York to London where I think they 
can often take great advantage from the North Polar Jet Stream.  The 
great circle path from NY to London is pretty close to the normal jet 
stream position and they are at the right altitude.  London to Sydney on 
the other hand you cross the generally weaker Sub-Tropical Jets more 
obliquely.  They are also at an altitude generally higher than 
commercial flights.

I allowed for some slippage by using 'approximately'.  I'm guessing but 
I think the difference for Sydney-London vs. London-Sydney would be 
negligible or in the low single digit % - all other things being equal. 
  Note that it requires a re-fueling stop either way in current 
commercial airliners.  It is a damned long haul.


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From: andrel
Subject: Re: This is relevant to my interests
Date: 14 Feb 2012 13:13:59
Message: <4F3AA468.4040302@gmail.com>
On 14-2-2012 15:26, Orchid Win7 v1 wrote:

> Well, clearly roses don't grow in a desert, so my information cannot be
> correct. I was merely expressing surprise at that.
>
> The equator is the hottest place on Earth.

http://en.wikipedia.org/wiki/Mount_Kilimanjaro



-- 
tip: do not run in an unknown place when it is too dark to see the 
floor, unless you prefer to not use uppercase.


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From: Stephen
Subject: Re: This is relevant to my interests
Date: 14 Feb 2012 14:58:06
Message: <4f3abcce$1@news.povray.org>
On 14/02/2012 4:15 PM, Paul Fuller wrote:
> It is a damned long haul.

I've done it there and back twice and you are damned right.

-- 
Regards
     Stephen


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