vacuum of space

"Mike Thomas" wrote in message
news:t8kEc.53569$HS3.49760@edtnps84...
Why don't atmosphereic gases get sucked into space considering the vacuum
pressure
involved that surrrounds us?



The giant sucking sound that comes out of Washington D.C, London, Paris,
etc..

"Mike Thomas" wrote in message news:t8kEc.53569$HS3.49760@edtnps84...

Why don't atmosphereic gases get sucked into space considering the vacuum
pressure involved that surrrounds us?

You're not, perchance, related to "Mick" ,
, ). Nor to Abdul Ahad?
I think I detect a family resemblance.

- Tony Flanders

"Mike Thomas" wrote in message news:t8kEc.53569$HS3.49760@edtnps84...

Why don't atmosphereic gases get sucked into space considering the vacuum
pressure involved that surrrounds us?

You're not, perchance, related to "Mick" ,
, ). Nor to Abdul Ahad?
I think I detect a family resemblance.

- Tony Flanders

The short answer is that gravity holds the gases in. But gas particles
(especially lighter ones, like hydrogen and helium) do reach escape
velocity at a rate best described statistically. That's why there's so
little hydrogen and helium in our atmosphere.

Many gases are replenished (i.e. liberated from heavier molecules into
gaseous form), which is why there's still an atmosphere at all, given the
fact that just about all gases will escape given enough time (and there
has been enough).




The Mikes come through, that is the answer I'm looking for

The short answer is that gravity holds the gases in. But gas particles
(especially lighter ones, like hydrogen and helium) do reach escape
velocity at a rate best described statistically. That's why there's so
little hydrogen and helium in our atmosphere.

Many gases are replenished (i.e. liberated from heavier molecules into
gaseous form), which is why there's still an atmosphere at all, given the
fact that just about all gases will escape given enough time (and there
has been enough).




The Mikes come through, that is the answer I'm looking for

"Tony Flanders" wrote in message
. ..
"Mike Thomas" wrote in message
news:t8kEc.53569$HS3.49760@edtnps84...

Why don't atmosphereic gases get sucked into space considering the
vacuum
pressure involved that surrrounds us?

You're not, perchance, related to "Mick" ,
, ). Nor to Abdul Ahad?
I think I detect a family resemblance.

- Tony Flanders

Is this Flanders field?

"Tony Flanders" wrote in message
. ..
"Mike Thomas" wrote in message
news:t8kEc.53569$HS3.49760@edtnps84...

Why don't atmosphereic gases get sucked into space considering the
vacuum
pressure involved that surrrounds us?

You're not, perchance, related to "Mick" ,
, ). Nor to Abdul Ahad?
I think I detect a family resemblance.

- Tony Flanders

Is this Flanders field?

"Mike Thomas" wrote :
I use it as a relative term as in Gradient. There is a potential
High to Low pressure gradient. The idea is that the vacuum does not
have the differential force to accelerate gas atoms to escape velocity.
That's what you should have said or something like it.

Old folk wisdom saying :

"A little knowledge is a dangerous thing"


H.

"Mike Thomas" wrote :
I use it as a relative term as in Gradient. There is a potential
High to Low pressure gradient. The idea is that the vacuum does not
have the differential force to accelerate gas atoms to escape velocity.
That's what you should have said or something like it.

Old folk wisdom saying :

"A little knowledge is a dangerous thing"


H.

The reason we have air presure around us is caused by Gravity. Just like when
you go under water the weight of the water increases the deeper you go. The
gravity is causing the weight to multiply by a factor of one atmosphere per 30
ft. you decend. so the presure of the ocean at the bottom is a result of the
dept of water that the gravity of the earth is acting. if you go to the dead
sea the air presure is greater there because you are deeper in the atmosphere.
(you could be 1000 ft below sea level) So it is a result of the amount of
gases that God put here. The amazing fact is that with all the hundreds of
factors working together, changing any of those by .01% would make life
impossable here on earth.