Picture from Nothing: Silence Paints Ghosts ⚡ экспресс
Ghost images are usually obtained by linking two beams: one illuminates the object, the other doesn't. Surprisingly, scientists have shown that you can recover an image even when not a single photon touches the object. All moments with light are discarded, and only empty gaps are used. It's like a photograph emerging from darkness. How can you see something you never looked at?
A drummer stays silent, but from the pauses you can tell where he didn’t hit. Similarly, physicists built an image by catching not light, but moments of absolute darkness. The picture emerged from silence.
The trick lies in the mysterious statistics of thermal light, which Roy Glauber studied in the 1960s. Bright spots on the object less often fall into complete darkness. By analyzing the frequency of "zero" events, they reconstruct the silhouette. Thus silence becomes more eloquent than noise, and the boundary between quantum and classical physics vanishes.
🎯 The term 'ghost imaging' arose because the picture seems to float separately from the illuminating beam — just like a ghost.