Avoid Delta and Atlanta

"Mxsmanic" wrote in message
...
nobody writes:

Wrong. There is consensus that the man made component is VERY SERIOUS,
even from USA scientists from NASA and NOAA.

Scientists don't really know for sure.

Of course, once every strom starts to flood sections of New York, the
USA will panic and demand the rest of the world cease to use oil.

That may be a long wait.

But by
then, it will be too late. And curently, while there is debate on the
actual rate of melting of ice, there is agreement that within 100 years,
flooding of manor coastal cities will be MAJOR.

Nobody knows what the world will be like in 100 years.


Not even you, who has already been here before, in the future? Your
Documentary is currently showing on BBC1.

JohnT

humidity

"relative humidity" is a ratio of water curently held by the air
compared to the total amount of water vapour that the air AT THAT
TEMPERATURE could hold.

The warmer the air, the more humidity it can contain.


When you exhale in winter, it shows what happens. Air you exhale is
warm and has lots of humidity. As you exhale, the air starts to cool
down, reducing its capacity to hold water. So while the air in your
mouth may have been only 50% relative humidity, when it cools down, the
same air and the same amount of water held in the air sees its relative
humidity rating rise. The second that parcel of air reaches 100%
relative humidity, any additional cooling results in the air "expelling"
some water vapour in the form of tiny droplets : a mist.

So the effectiveness of the sweating process is determined by the air's
ability to accept water vapour.

In a low relative humidity setting, air around your body may have enough
"spare" capacity to absorb your sweat, and even without ventilation, you
will feel dry because all your sweat can evaporate into the air around
your body.

But in a high relative humidity setting, the air around your body has
reduced "spare" capacity, so it can absorb less of your sweat. If only
part of your sweat can evaporate, then the rest stays in liquid form and
you get wet.

If you have ventilation and say 90% relative humidity, then each parcel
of air that passes over your body can still take on 10% of its water
capacity and evaporate a bit of your sweat. The next parcel of air will
do the same and eventually, your sweat has all evaporated.

If air is not moving, then the air around your body quickly reaches 100%
relative humidity and can no longer accept any evaporating sweat, so you
not only stay wet, but your cooling system no longer works (evaporation
of sweat is what cools you), and thus produce more sweat.


In fact, in winter, warm moist air will keep you warmer than warm dry
air simply because in the moist air, your cooling system is less
effective so you cool down less. But outside, it works the other way: it
takes more heat to heat moist air than to heat dry air. So when moist
cold outside air reaches infiltrates your clothes, it saps more heat
from you, hence you feel colder.

"Mxsmanic" wrote in message
...
TOliver writes:

Whiile the evidence is often not conclusive near the Equator, the
Coriolis
Effect is worth a few moments of your attention.....

It is not significant with respect to water running down a drain.


Would you hazard a guess that your terlet in Paris and one in Capetown
circulate in the same direction? You'd likely be wrong.
(and most folks, including the RN's naval gun designers would have thought
Paris to be a "High Latitude" location). The Coriolis Effect certainly
"increases" with distance traveled, but it no less alters the direction of
travel of objects over short ranges, where the movement becomes
imperceptible except with scientific measurement). The easiest way to
observe Coriolis is with every flush. Unless you've magic plumbing fixture,
yours displays the familiar rotating swirl (which in the Antiposes is
reputed to be in the opposite direction)

Almost every drain (other than close to the Equator) will display the
circular motiuon (generallly covering distances far more than your silly
(Numbskull and dumbass) "few centimeters". Amost every molecule travels a
fair distance as it descends in the classic circular path.

"Tim C." wrote:
That damp, sticky cold that is so typical of UK winters can be felt until
around -5C, then it really starts to feel drier and you get that "dry-cold"
which is what I think you mean? Until -5C I wouldn't call it humid as that
is generally associated with warm temps, but "damp" sure.

It depends on where the air came from.

If it comes from the south, it will start off hot and loaded with
humidity, and as it travels north, it cools down, reaches 100% relative
humitity, so air at -5 is likely to have come from the south and thus
more humid.

If you have air that starts off from the north at -40, it may be at 100%
relative humidity at that stage, but as it war,s up to say -10 by the
time it arrives to you, the same humidity contained in the air will now
represent a much lower relative humidity percentage, hence feels "drier".

The Reid wrote:

Following up to James Robinson

and the
relative humidity is approaching 100 percent. It's just that the air
doesn't hold much water vapor at colder temperatures.

Right, 100% of not much.

Correct. But what REALLY matters when air comes in contact with your
skin is whether it has spare capacity to absorb any of the moisture on
your skin or not. Air at 100% relative humidity will not absolb any more
water, so water does not evaporate and stays as water on your skin.


And when you take a shower, the mist you see is not water vapour, it is
just that you are throwing hot water which warms the air around it, that
air absorbs tons of the moisture, but as it leaves the are, it cools
down and must shed the excess water in the form of the mist. Similarly,
when it hits your mirror which is even colder, it cools more and must
shed more moisture which fogs your mirror.

"Mxsmanic" wrote in message
...
nobody writes:

If your employer forces you to wear full suits all day long, then the
second you step out of the office, you dress in normal clothes that are
suited for the current outside weather.

By snapping my fingers?

And the weather is worse inside the office than outside. What do I do
then?

What is wrong with changing clothes and putting on shorts and
light shirt to step outside in the warm sun ?

The fact that it is even hotter inside. And what is wrong with
wearing shorts and a light shirt inside the office?


It does sort of explain why you are unemployable!

JohnT

Mxsmanic wrote:
Miguel Cruz writes:
Poor physical fitness increases the chance of death due to
hyperthermia ...

Why?

Because the bodies of more frail people cannot so easily handle extremes
of heat and cold (and shock and pressure and a great many other things).

How about pneumonia and flu?

miguel
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"Mxsmanic" wrote in message
...
Keith Willshaw writes:

You didnt specify hypothermia

Hypothermia is the technical term for death from cold, which I did
specify.


No you didnt, you asked

What extreme cold anywhere in the U.S. has caused thousands or even
hundreds of deaths?

The answer according to leading researchers in the USA
is winter - EVERY year

Now we expect you to weasel, lie and obfuscate to avoid admitting you
were wrong but dont imagine you are fooling anybody, except
perhaps for yourself. Ignorance is pardonable and fixable
but stubbornly adhering to error is rather sad.

Keith

TOliver writes:

Would you hazard a guess that your terlet in Paris and one in Capetown
circulate in the same direction?

It depends on the design of the toilet.

You'd likely be wrong.

No, I wouldn't.

... and most folks, including the RN's naval gun designers would have thought
Paris to be a "High Latitude" location ...

It's actually just past the halfway point as latitude goes, being at
48°52' north latitude.

The Coriolis Effect certainly
"increases" with distance traveled, but it no less alters the direction of
travel of objects over short ranges, where the movement becomes
imperceptible except with scientific measurement.

Yes.

The easiest way to
observe Coriolis is with every flush. Unless you've magic plumbing fixture,
yours displays the familiar rotating swirl (which in the Antiposes is
reputed to be in the opposite direction)

That swirling is produced by the construction of the plumbing; it is
not produced by the Coriolis effect.

Almost every drain (other than close to the Equator) will display the
circular motiuon (generallly covering distances far more than your silly
(Numbskull and dumbass) "few centimeters".

Yes, but not because of the Coriolis effect. As water moves towards
the drain, it must conserve any angular momentum it already has, and
as the circle through which that inertia acts shrinks with the
movement towards the approaching drain, angular velocity increases.
Thus, imperceptible angular momentum in a large sink full of water can
produce an obvious swirling as the water goes down the drain.

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Miguel Cruz writes:

Because the bodies of more frail people cannot so easily handle extremes
of heat and cold (and shock and pressure and a great many other things).

Are you sure?

How about pneumonia and flu?

What about them?

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