原文开头
Dimensions beyond the four we are familiar with could reveal why gravity is relatively weak, says Leah Crane IN ONE of the most memorable interviews of my career thus far, I was at my desk, head in my hands, talking on the phone to a physicist about extra dimensions. I was trying to understand what it means for an entire dimension to be small. After several minutes of back and forth, I said: “Not small like a jellybean, though, right?” The answer? Well, it’s complicated. We regularly invoke “extra” dimensions in physics, but very rarely do we talk about what that actually means. …
摘自《新科学家》(New Scientist)第3588期 · 2026年3月28日,Leah Crane。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。