5 GHz WiFi has a wavelength around 6cm so it can’t “see” anything smaller than a... | Hacker News

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		bmenrigh on July 16, 2024 \| parent \| context \| favorite \| on: Ask HN: Any tools to do generic WiFi imaging? 5 GHz WiFi has a wavelength around 6cm so it can’t “see” anything smaller than approximately that. The things you want to see in your walls are below the diffraction limit for WiFi.

PaulHoule on July 16, 2024 | [–]

Imaging past the diffraction limit is possible in the near field

https://en.wikipedia.org/wiki/Diffraction-limited_system#Nea...

p5a0u9l on July 16, 2024 | [–]

Yes it can. Diffraction limit relates to resolution in space, not scattering.

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