On: What Happened in the UK Blackouts?

[circular_logic]

That makes me wonder, if you were standing next to these turbines would you be able to here them slow down?

[fanf2 → circular_logic]

The change in pitch from 50Hz to 48.8Hz was 0.4 semitones.

12 * ln 50 / ln 2 = 67.7

12 * ln 48.8 / ln 2 = 67.3

[kalleboo → circular_logic]

This is kinda unrelated (it involved a line frequency slowdown from 60 Hz to 51 Hz), but I always found this radio recording of the US northeast blackout of 1965[0] fascinating as the DJ is grappling with records/tape cartridges slowing down and lights dimming live on the air https://www.musicradio77.com/images/ing11-9-65blackout.mp3

[0] https://en.wikipedia.org/wiki/Northeast_blackout_of_1965#Rad...

[mnx → circular_logic]

If I listen carefully, I can tell the difference between 48 and 50hz using a sine generator (although it's very subtle), so I'd guess that you possibly could.

[bsder → circular_logic]

Probably, although you are more likely to hear the 3000Hz to 2880Hz change in the generator RPM than the 50 to 48.8 change in the output.

[Iwan-Zotow → circular_logic]

Yes