Comment on The real double-slit quantum eraser they don't want you to know about!

TWeaK@lemm.ee ⁨1⁩ ⁨year⁩ ago

So it turns out the original meme was kind of right? It just didn’t illustrate what it was talking about very well. According to @ada@ada@lemmy.blahaj.zone:

The double slit experiment is about observation.

When you fire photons through the double slits, one photon at a time, they cause wave interference patterns with themselves as if each photon travelled through both slits.

Yet if you set something up to measure which slit each photon passed through, they no longer interfere with themselves, and give you the two straight lines pattern, rather than the interference pattern.

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