Why airplanes taxi

On Feb 11, 5:47*am, Mxsmanic wrote:
WingFlaps writes:
So how do you explain the rather well known lapse rate?



In both cases, the correlation is between temperature and altitude, not
temperature and pressure.

Are you saying the air knows how high it is? That's amazing 'cos I use
a sensitive pressure meter to tell me my altitude!
Sounds like you are BS'ing to cover a mistake to me.

Cheers

WingFlaps wrote in news:119b347f-0e1d-4af3-a695-
:

On Feb 11, 5:47*am, Mxsmanic wrote:
WingFlaps writes:
So how do you explain the rather well known lapse rate?



In both cases, the correlation is between temperature and altitude, not
temperature and pressure.

Are you saying the air knows how high it is?

Qustin is: does Anthony?


Bertie

On Feb 11, 3:40*am, Mxsmanic wrote:
terry writes:
You see the fact that the volume of the atmophere or of space is
infinite is quite irrelvant because nobody wants to know what the
average density of the whole atmophere is ( which of course will
approach zero depending on your definition of where the atmsophere
actually ends).

It is very highly relevant. *If you increase the temperature of the
atmosphere, for example, the pressure does not rise, because nothing
constrains the atmosphere--it simply expands. *Atmospheric pressure comes from
gravity, which is a constant, and not from any constraints applied to the
volume of air, of which there are none. *In the highest portions of the
atmosphere, the temperature rises to several thousand degrees, but the
pressure remains extremely low. *At the surface, you might see variations in
absolute temperature of 1/3, but you won't see variations in pressure anywhere
near that magnitude.

Did I say the pressure would rise if you increased the temperature?.
For the last time, if you know the temperature and pressure you know
the density,. for gods sake, gets some help with your attention
problem.... or go away
terry

writes:

Babbling nonsense.

Current estimates are the universe is about 160 billion light-years
in diameter.

If the universe isn't infinite, nothing in it can be either.

As I've said, we don't know if the universe is infinite or not.

It's interesting that anyone would criticize me for making assertions about
aviation when others cheerfully make assertions about the very nature of the
universe.

writes:

Air molecules don't have altimeters to tell them the altitude.

Air molecules in a tank don't have rulers to tell them the dimensions of the
tank, either.

WingFlaps writes:

Are you saying the air knows how high it is?

No.

Mxsmanic wrote in
:

writes:

Babbling nonsense.

Current estimates are the universe is about 160 billion light-years
in diameter.

If the universe isn't infinite, nothing in it can be either.

As I've said, we don't know if the universe is infinite or not.


It's interesting that anyone would criticize me for making assertions
about aviation when others cheerfully make assertions about the very
nature of the universe.


You don't make assertations. You pull things out of your ass.

Bertie

Mxsmanic wrote in
:

writes:

Air molecules don't have altimeters to tell them the altitude.

Air molecules in a tank don't have rulers to tell them the dimensions
of the tank, either.


Yes, they do.


Bertie

Mxsmanic wrote in
:

WingFlaps writes:

Are you saying the air knows how high it is?

No.


Wrong/

Bertie

terry writes:

Did I say the pressure would rise if you increased the temperature?

If it follows the combined laws, it will. But in the case of the atmosphere,
it doesn't, because the volume of the atmosphere is not constrained, and the
source of atmospheric pressure is gravity, not the random kinetic energy of
air molecules.