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The ALPS II experiment didn't find axions, but it improved the search precision by a factor of 20.
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Light can momentarily turn into invisible particles and pass through walls. In Hamburg, they tried to catch this: a laser shone at a barrier, and detectors waited for flashes on the other side. No miracle happened, but scientists improved the search precision 20-fold. Now an upgrade is in the works to become a hundred times more sensitive.
🎯 The name 'axion' was coined by [scientist:Frank Wilczek]Frank Wilczek[/scientist], inspired by a laundry detergent ad—the particle was supposed to 'clean up' physics inconsistencies.
🎬 In science fiction, ghosts pass through walls—axions do it at the subatomic level.