Well, my first guess would be tintinitis, what happens to many of us old guys, especially those who worked in noisy environments. TV used to have a real bad high pitched whine. 'Bout drove me crazy to walk past a display of tvs in a department store. Dont't know if they do still, or if I can't hear that high anymore. New technology has changed how the picture tube is powered. As far as the flourescents, they run at line frequency, 60Hz - most can't hear that low. Led lights if run all in one direction, would have a 60hz flicker, because they would be running on only one side of the ac sine wave, since they are diodes. However, I suspect they are made to run on both sides of the sine wave, to eliminate the flicker. My dad used to tell when they changed from 30 cycle to 60 cycle (they called them cycles back then), Said you could actually see the flicker in lightbulbs at 30 cycles. When they switched, the clocks ran twice as fast!
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Today's Featured Article - Show Coverage: The Old Gold National Antique Tractor Show - by Cindy Ladage. Over the fourth of July weekend, the Illinois State Fairgrounds in Springfield, Illinois, was the site of the Old Gold National Antique Tractor Show. Tractors of all makes and models were displayed and separted into categories by their age. Deere, Oliver and even a Wards and Keck Gonerman were part of the crowd. A sea of red International Harvester's seemed to be the the model with the biggest showing. The crowd was decent for the scorching July heat. The opening day started o
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