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@ryanc@infosec.exchange My partner has an eye-movement disorder that means she sees stroboscopic artefacts with flicker, and she's sensitive up to about 6kHz.

https://sansiled.com/ were the only manufacturer of traditional bulbs that seems to be consistently good at this, though they seem more interested in industrial fixtures and grow lamps.

(They're much better engineered than the usual supermarket brands: Proper power supplies, decent heatsinking, etc. I haven't noticed any acoustic noise from them, but I haven't held them to my ear to check.)

Not tried their dimmable stuff, we don't have any TRIAC dimmers in the house.