The Casimir effect is demonstrated by measuring forces between two bodies, the first being between very narrowly spaced parallel plates. A net force occurs that is attributable to the properties of the quantum vacuum. Does this mean that the space occupied by the parallel plates is void of these properties?
Note: "As I understand it" should preface most of the sentences above.
I could have been more clear. What I meant to ask is if the quantum vacuum fluctuations are within the plates - does the quantum vacuum occur within the solid?
24 Feb 2022 I'm still not clear on the answer, so I'll re-phrase the explanation of the title question. Ignoring the description of the experiment, are there the same quantum vacuum fluctuations within a solid block of steel as in the vacuum of space? So, in experiments to measure the Casimir effects, are there vacuum quantum effects expected from inside the surfaces of the bounding materials? To re-phrase, are there quantum vacuum effects inside a solid body, like a solid block of steel?