Magnetic field turns the void into a motor ⚡ экспресс
Original: "Vacuum Torque Without Anisotropy: Switchable Casimir Torque Between Altermagnets"
A magnetic field makes the void rotate objects — even perfectly symmetric ones.
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Emptiness is never truly empty — it's constantly buzzing with virtual particles. Their jostling can spin tiny pieces of matter if a magnetic field is applied. Physicists have found a way to start this 'vacuum motor' without asymmetric parts, simply by using a new type of magnet. In the future, this could lead to nanomotors that run without mechanical contact.
🎯 The Casimir effect was calculated by Dutch physicist Hendrik Casimir back in 1948, but it wasn't experimentally confirmed until 1996–1997 with the help of ultra-precise measurements.
🎬 In Arthur C. Clarke's science fiction novel 'The Fountains of Paradise', engineers build a space elevator. Perhaps one day Casimir-effect nanomotors will become part of such structures.
\tau \propto B^2
The rotational force (τ) grows as the square of the magnetic field (B).