[asharbiq]

An uphill one, it would seem. yes, when people are in denial... might as well go fishing...


to have the gaul to say 300 years of physics is wrong welcome to history.... paradigm shifts occur often in science....


*gone*

[furillo]

its OK, stick to the anachronisms

unfortunately both can only be achieved via pressure...a PUSH

OK, so when you say "pressure" you mean a compressive force.

What word or words do you use when you mean "pressure"?

[Intory]

What word or words do you use when you mean "pressure"? Pressure implies to me an immovable brick-wall.... a point from which force can be directed in some way or other.. against another movable object/wall

In compression, it is a push against the object being compressed with a push against the brick wall; the object is pushed against its wall

In tension, it is necessary for one end of the object under tension to be as one with its brick wall and the so called puller to be at one with the other end of the object under tension, AND be behind and pushing back against its brick wall

So there is push all around
but push can be in different directions.. either push towards a brick wall or push away from a brick wall

[FuXA8nQM]

Of course the point to this discussion is NOT SEMANTICS

Your anthropogenic language is OK, such that pull and push are specific instructions in applying force in a specific direction

eg push... away from your body
pull.... towards your body

I have no problem with those concept

But this is science and the erroneous concept of pull has led many researchers into a bottomless pit of delusion and illusion...

The major transgression into fantasy is that gravity is an attraction.... a pull towards the centre of a massive body,
and so all the current and established theories and mathematical models hold "attraction" as a valid mechanism to transmit force

Thus there are faeries at the bottom of the garden; why can't YOU see them ???

[9V42h1eT]

The major transgression into fantasy is that gravity is an attraction.... a pull towards the centre of a massive body,
and so all the current and established theories and mathematical models hold "attraction" as a valid mechanism to transmit force

Thus there are faeries at the bottom of the garden; why can't YOU see them ???

As I said before, gravity does not exert a force on anything, so cant be a pulling (nor a pushing) force.

[budumol]

Zarkov - I'm not concerned about what you mean by pressure. I would like to know what word you use for the thing that everybody else calls pressure. That is force per unit area. What word or words do you use to convey this concept?

[Clolmemaexata]

If it's any help...

...you can pull a boat.

What most people think of as 'rowing' is correctly termed 'pulling a boat'. You face aft, and you pull on the handle ('loom') of the oar to provide propulsion to the boat.

To 'row' is to do the opposite: face forward, and push on the loom to make the boat go foraward.

[SweetCaroline]

Actually this is one time that Zarkov actually made sense. I remember a convo on old SSSF I had with him, I am yet to find where something is actually pulled.... Does not mean it doesn't exist, even though I see much evidence for pushing. If nothing else this has been something I have pondered on since that convo all those years ago.

[Zaebal]

Thanks guys for all your input

[dosugxxx]

Actually this is one time that Zarkov actually made sense. I remember a convo on old SSSF I had with him, I am yet to find where something is actually pulled.... Does not mean it doesn't exist, even though I see much evidence for pushing. If nothing else this has been something I have pondered on since that convo all those years ago.

What do you mean by "pulled"? If you have yet to find something that is pulled you do not seem to be using the word in the usual sense.

[Borrinas]

shakes head and walks...

[SkatrySkith]

shakes head and walks...

Enjoy your walk then.

Meanwhile since you are unable or unwilling to explain what you mean in plain English I'm hoping that Drewser will.

[Scfdglkn]

Would the direction of this thread come down to elastic or in-elastic particle tension?

[orgagsUpsepsy]

Rev, engineering ??????

pressure is created when a force is applied to an object... yes force on an area creates a pressure
and pressure will push things

Pressure can not pull things.

There are two ways things can move and all are exclusively via a push.
(a) via pressure...
(b) via a lever

I would have thought such concepts are well know in high school

But I am tired.... lack of genuine conversation is very tiring

certain members of this forum are recalcitrant !; and that is not a scientific approach.

[FuXA8nQM]

Rev, engineering ??????

pressure is created when a force is applied to an object... yes force on an area creates a pressure
and pressure will push things

Pressure can not pull things.

There are two ways things can move and all are exclusively via a push.
(a) via pressure...
(b) via a lever

I would have thought such concepts are well know in high school

But I am tired.... lack of genuine conversation is very tiring

certain members of this forum are recalcitrant !; and that is not a scientific approach.

In the conventional sense of the term, pressure doesn't push (or pull) anything...

It's the forces applied to objects that move them about... Pressures create stresses and strains.

[embefuri]

Would the direction of this thread come down to elastic or in-elastic particle tension?

I don't see how it would.

[Liabmeasez]

Rev, engineering ??????

pressure is created when a force is applied to an object... yes force on an area creates a pressure
and pressure will push things

Pressure can not pull things.

There are two ways things can move and all are exclusively via a push.
(a) via pressure...
(b) via a lever

I would have thought such concepts are well know in high school

But I am tired.... lack of genuine conversation is very tiring

certain members of this forum are recalcitrant !; and that is not a scientific approach.

I thought you were going for a walk.

I'd like to see what Drewser has to say about it.

[Tribas4u]

In the conventional sense of the term, pressure doesn't push (or pull) anything...

It's the forces applied to objects that move them about... Pressures create stresses and strains.

I don't understand that either. Since pressure is force/area, and forces move things, why do you say that pressure doesn't push (or pull) anything?

[Alexunda]

I don't understand that either. Since pressure is force/area, and forces move things, why do you say that pressure doesn't push (or pull) anything?

What I mean is that you rarely use 'pressure' as the mechanism for an acceleration... The pressures are generally resolved back to point forces...

Pressures induce stresses and strains in materials

[ANCETPYNCTEXT]

Pressures induce stresses and strains in materials
So do forces.

I still don't get what you mean.

I mean if anyone asked what caused the acceleration of the piston in an engine, or what provided the force to rotate a wind turbine or lift an aircraft, I would say pressure.