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Quantum theory says a vacuum isn’t truly empty. Probing it with powerful lasers could finally expose its hidden structure, discovers Jon Cartwright ON THE outskirts of Hamburg, Germany, pulses from one of the world’s biggest X-ray lasers race underground towards a stainless-steel chamber. Directly above, another huge laser waits. Soon, its beam will be sent down to meet the X-rays head on, bringing the two extraordinarily powerful beams of light together in an almighty burst of energy. The modern concept of the vacuum can be traced to the work of theorist Paul Dirac in the late 1920s. …
摘自《新科学家》(New Scientist)第3612期 · 2026年9月12日,Inside the vacuum。仅引用开头一小段供了解文章,版权归原刊所有,全文请阅读原刊。