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To date, no one has proved that the Casimir effect works in high-temperature superconductors, but the scientists are betting that it does.

One example is the Casimir effect, predicted by Dutch physicist Hendrik Casimir in 1948.

That vacuum fluctuations and virtual particles exist has been widely accepted at least since the Casimir effect was demonstrated.

To verify that virtual particles interact with gravity like normal matter, the Archimedes team members want to use the Casimir effect to weigh virtual particles with a simple beam balance.

These barriers are necessary because the scientists are searching for a minute signal: the slight movement of the balance when the Casimir effect turns on, changing the weight of a sample material by altering the population of virtual particles inside it.