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It was while cobbling together a high voltage power supply for a lab-made nitrogen laser (some time in the 1980s) when I discovered something about sound. I went to our venerable guru, Mr Tecson, for advice about my circuit that was emitting a shrill, high frequency tone the source of which I could not trace.

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MR TECSON

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It was while cobbling together a high voltage power supply for a lab-made nitrogen laser (some time in the 1980s) when I discovered something about sound. I went to our venerable guru, Mr Tecson, for advice about my circuit that was emitting a shrill, high frequency tone the source of which I could not trace.

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abtest

Sound

By GOD’S WORD TODAY | September 6, 2015 - 10:00am

It was while cobbling together a high voltage power supply for a lab-made nitrogen laser (some time in the 1980s) when I discovered something about sound. I went to our venerable guru, Mr Tecson, for advice about...

Opinion