this post was submitted on 14 Jul 2025
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[–] qjkxbmwvz@startrek.website 2 points 6 days ago

A single atom of gold is far too small for any photon in the visible spectrum to interact with.

That's incorrect


single atoms can, and do, interact with optical photons.

https://arxiv.org/abs/2410.19671 https://www.nature.com/articles/ncomms13716

And the entire field of super resolution microscopy relies on small things (e.g., molecules) interacting with light.