On Tue, 24 Jan 2012 15:12:43 -0700, Patrick Elliott wrote:

> On 1/23/2012 5:53 PM, Jim Henderson wrote:
>> On Mon, 23 Jan 2012 12:22:44 -0500, Aydan wrote:
>>
>>> Invisible<voi### [at] devnull>  wrote:
>>>> Actually, going back to my previous point: The amount of /moisture/
>>>> emitted by a normal human is absurdly small. And yet, put enough of
>>>> them in a room, and it can get astonishingly moist in there! o_O
>>>
>>> I just had a look in Wikipedia:
>>> 1m³ of air at 20 can carry roughly 30ml of water (as vapour).
>>> 1 human sweats about 400ml to 1l per day.
>>> Since "normal" room air usualy has about 50% humidity that leaves
>>> about 15ml/m² for the sweat. That would mean 1 human can saturate 1 -
>>> 2.5 m³ of air per hour.
>>> Now you just need the number of people and the size of the room to
>>> know how fast it saturates.
>>
>> You'd also need to know the current relative humidity to know how
>> saturated it is before you start adding people to the room.
>>
>> 0% humidity is quite rare - in fact, I don't know that it's possible on
>> Earth other than in an artificial environment.  I live in a desert
>> climate (though not in the desert), and while we do easily hit below
>> 20%
>> relative humidity, we don't hit 0.  (In fact, it's snowing right now)
>>
>> Jim
> Cave system near here is.. damn close. Was going to be used as a bomb
> shelter, by the government, but, frankly, they would have had to store
> 20 times the water they still have down there to survive it. You can
> definitely tell there is next to no water in the air while there.

Vegas reportedly sees a low-ish average of 11%.  As I recall, you're not 
far from there (south, I think), about equidistant from Phoenix and Vegas?

Jim

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On 1/24/2012 3:25 PM, Jim Henderson wrote:
> On Tue, 24 Jan 2012 15:12:43 -0700, Patrick Elliott wrote:
>
>> On 1/23/2012 5:53 PM, Jim Henderson wrote:
>>> On Mon, 23 Jan 2012 12:22:44 -0500, Aydan wrote:
>>>
>>>> Invisible<voi### [at] devnull>   wrote:
>>>>> Actually, going back to my previous point: The amount of /moisture/
>>>>> emitted by a normal human is absurdly small. And yet, put enough of
>>>>> them in a room, and it can get astonishingly moist in there! o_O
>>>>
>>>> I just had a look in Wikipedia:
>>>> 1m³ of air at 20 can carry roughly 30ml of water (as vapour).
>>>> 1 human sweats about 400ml to 1l per day.
>>>> Since "normal" room air usualy has about 50% humidity that leaves
>>>> about 15ml/m² for the sweat. That would mean 1 human can saturate 1 -
>>>> 2.5 m³ of air per hour.
>>>> Now you just need the number of people and the size of the room to
>>>> know how fast it saturates.
>>>
>>> You'd also need to know the current relative humidity to know how
>>> saturated it is before you start adding people to the room.
>>>
>>> 0% humidity is quite rare - in fact, I don't know that it's possible on
>>> Earth other than in an artificial environment.  I live in a desert
>>> climate (though not in the desert), and while we do easily hit below
>>> 20%
>>> relative humidity, we don't hit 0.  (In fact, it's snowing right now)
>>>
>>> Jim
>> Cave system near here is.. damn close. Was going to be used as a bomb
>> shelter, by the government, but, frankly, they would have had to store
>> 20 times the water they still have down there to survive it. You can
>> definitely tell there is next to no water in the air while there.
>
> Vegas reportedly sees a low-ish average of 11%.  As I recall, you're not
> far from there (south, I think), about equidistant from Phoenix and Vegas?
>
> Jim
Yeah, but this underground system also has "zero" water in it, and the 
rock seems to suck up what little comes in from outside, so.. its pretty 
damn nasty.

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On Tue, 24 Jan 2012 16:13:01 -0700, Patrick Elliott wrote:

> Yeah, but this underground system also has "zero" water in it, and the
> rock seems to suck up what little comes in from outside, so.. its pretty
> damn nasty.

I was a bit surprised that death valley wasn't listed as drier.

Jim

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>> Yeah, but this underground system also has "zero" water in it, and the
>> rock seems to suck up what little comes in from outside, so.. its pretty
>> damn nasty.
>
> I was a bit surprised that death valley wasn't listed as drier.

Apparently some of the driest places on Earth are the dry valleys of the 
South Pole. Sure, /most/ of Antarctica is under miles of solid ice. But 
there are a few valleys utterly bare of snow, deep in the interior of 
the continent. Apparently they can go /centuries/ without any 
precipitation at all.

How dry the *air* is, I couldn't say...

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On 1/22/2012 23:23, Le_Forgeron wrote:
> Wondering if they are running MS Windows:

It's Linux, with each application on any given box running in its own VM, 
which is also Linux. Unless you need Windows or OSX (e.g., testing 
javascript code against IE), in which case your code runs on the appropriate 
server farm.

>   2. In case of security update, did they all update&  reboot at the same
> time ?

No, they do rolling restarts.

> Obviously, they are not using Apple's computers.

Not in the data centers, no.

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

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