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For while when I was young Florsent lights used to mess with me , they would fiicker and I could feel it in my teeth , just a slight buzzing , fillings ????

I can hear some scales working , Electro-magnetic compinsation load cells speficaly , they buzz when they are powered up , a few years ago I took a class and I asked the instructer about this , he said that the coil does vibrate , but most folks can't hear it .
I guess that I am just special !!!!