"Eeyore" wrote in message
...
The strangest thing happened to me yesterday.

I was sitting on my bed and rested my head (the temple) on my hand and I
could hear a buzzing. Now, I'd had a bad headache a few days before but
it didn't sound like the tinnitus associated with it.

So, I removed my head from my hand and the sound stopped. Then the penny
dropped, you can get bone conduction hearing.

Sure enough it was the 11W CFL lamp in my bedside light about 2-3 feet
away. If I put my ear up close to it I could hear exactly the same
sound.

Is that curious or what ?


Graham

Not particularly, Methinks its just the modulation of the HF switcher at
twice the line frequency, 100Hz in your case. Your probably hearing the
small HF transformer in the base of the CFL sing at that frequency.