The only difference between densities is porosity and how much they displace atmospheric pressure in my hypothesis.
Is the above statement the crux of the biscuit?
If I go back to the hypothesis:
"Den Pressure:
Is the act of Air Pressure creating weight by pressing down on an object. The density of an object determines how much air pressure affects how much force is transferred to the object to create weight. For instance a less dense object would be affected less and in return would weight less."
A couple of super basic questions. And probably addressed a multitude of times over 70+pages:
1) Wouldn't the act of air pressure be from all sides, not just a down vector?
Yes it's from all sides. It's acting on every part of any dense mass that is displacing it.
We are being squeezed and are repelling that squeeze upon us and all around us.
The more dense we are the more atmosphere we repel and it's simply our very own dense mass that dictates how much pressure we push into.
To make this easier, just imagine atmosphere as a black picture.
Imagine a block of lead in that picture that cannot be seen other than seeing faint tiny white dots.
That would be the minute porosity of that lead block but if you were to take that block away you would leave a white block silhouette with black tiny dots in it, assuming we could suspend animation at that point.
So what we're seeing is the porosity at that point.
The black ots would be atmosphere already within the block and part of the external atmospheric pressure within the block that is obviously not part of the block's ability to repel that atmosphere. So the lead actually does have porosity but not a lot of it, which means that the rest of that dense mass is displacing the atmosphere around it..and as you would be able to imagine, it would be a block that is using a foundation (ground) as a resistance to that atmospheric push back/squeeze of it's own displaced mass, back onto it.
Equal action and reaction, basically.
This is how you would get man made weight measurement if you were to use a scale plate as your foundation.
Read that through and think carefully about it. It's simple but maybe my explanation isn't how you generally think.
2) Is the contention that if a vacuum is created in a vessel the object within is unaffected in terms of it's weight and your hypothesis says that, in some way, there is still some sort of air pressure present?
Think about it this way.
Imagine you have a balloon inside a chamber. The balloon is near flat except for a small amount of atmosphere within it and tied.
Now you place a scale inside a chamber and place the balloon on it. You get a reading, however small.
Now you leave that scale in the chamber and you start to allow the matter inside to evacuate via your pump.
The molecules inside the chamber around the balloon can expand into each other as the pump holds back the external atmosphere from pushing back into the chamber and equalising the pressure.
The thing is, the more the molecules expand external to the balloon the more the compressed molecules inside the balloon expand to equalise the lower pressure expansion by expanding themselves.
One is cancelling out the other at all times. Action/reaction in equal terms.
The scale may measure a small change most likely to actually do with the scale itself working in an environment that it wasn't built for and would likely lose calibration for that environment.
In essence, a vacuum vessel is not achievable?
A vacuum as in total free space is impossible and should be seen to be that.
Free space anywhere is simply impossible.
Lowering pressure by allowing lesser resistance to movement of molecules is the best you can hope for and no pump, no matter how big can allow evacuation of all molecules from a chamber, no matter how strong the chamber is or how strong the pump is.
Why?
Because, like I said a little earlier. The pump does its work against the external atmosphere and has absolutely no direct contact with the chamber, except to be attached by a pipe or tube or whatever to allow the molecules inside that chamber to expand into it under their own push on push expansion that is created for them as they push equally expanded molecules out of the chamber by their own allowed expansion, courtesy of the strength and energy of the pump.
This can happen for a certain period of time depending on pump strength against external atmospheric push, until the molecules inside the chamber either cannot expand into each other anymore... and so, not cause a push on push to release more or they simply go dormant. They basically freeze or to make it easier to grasp...they cease to vibrate through expansion, in this case.
The end product is always the same...you can never create free space and you can never rid any container of matter, no matter what.
The best you can do is to create the freeze.
This is why the dome works but we'll get to all that way way down the line, because it all ties in if you're willing to grasp it and be patient like Jane has..
Don't go any further unless you grasp what I'm saying.
If you require more info, just ask... but keep it as basic as you can and try not to go down a different route until this is cleared up enough for you to do so.
You never know, you might start thinking different if something clicks in your mind. But that's up to you.
In the meantime, we'll carry on...if you're willing to do so. Either way the choice is yours.