top | item 44769384 (no title) _neil | 7 months ago Might have been audio?https://phys.org/news/2018-02-power-grid-fluctuations-hidden... discuss order hn newest 3036e4|7 months ago Sibling comment and article mentioning "Electric network frequency (ENF)" lead to further reading mentioning both audio and visual fluctuations being used. _neil|7 months ago Ah you’re right. Pretty cool.
3036e4|7 months ago Sibling comment and article mentioning "Electric network frequency (ENF)" lead to further reading mentioning both audio and visual fluctuations being used. _neil|7 months ago Ah you’re right. Pretty cool.
3036e4|7 months ago
_neil|7 months ago