In physics, a vacuum is essentially a void. I.e space where there is no matter.
And emptiness naturally suggests a state of nothingness. Because, of course, if there is “something” there — the space is not empty.
Only by there being “nothing” there can we truly say that something is empty.
And yet, the fact that a vacuum exists at all —or that we can actually observe / measure it in all manner of ways from space experiments to the incandescent lightbulbs . . . means that it must have some kind of substance.
Admittedly, it might not be a material substance. Because, again, we are discussing something that is supposed to be “empty”.
But, still, there must be something to it. Because existence itself is substantial. (i.e we can see/experience it.)
So, if a true vacuum — somewhere there is literally no matter — has an existence of it’s own (which, clearly, it does) . . . than, we are led to seeing that existence itself must be built on something non material.
In other words: Existence does not need a material structure. And, in fact, it is not material which makes things exist. . . rather, it is existence itself which makes things material.
This brings to my mind a lot of ideas about the Jungian idea of there being a collective unconscious permeating our reality. . . or, further still, to Plato’s idea of the forms, which suggests that our entire world is like a projection of some more perfect reality.
If everything we see is material alone — then there would be no possible existence beyond this. Not even in imagination.
While, on the contrary, if all material is instead a manifestation of some deeper form of consciousness. . . then, this explains why we are ourselves able to transcend physical reality, simply through the power of our own mind, or in dreams etc.
Here, we again experience an insight into pure, immaterial, existence. Because while our imaginative worlds cannot be seen by others, and cannot be literally touched / measured . . . still, they exists as very real to us — as the experiencer.
Thus, much like the vacuum idea that we started with— it can be said that thoughts themselves are also a kind of “existence without form”
And, in fact, the two ideas are inextricably linked when we are considering the deepest reaches of our reality..
In pure thought, we discover worlds beyond the material — which, nonetheless, have a real existence of their own.
And, similarly, in a vacuum. What we first discover as a space of emptiness— now becomes full of insight. Of how pure existence permeates all things — material or immaterial.
There is something in the nothingness.