Decades: 0s BC 0s 10s 20s 30s - 40s - 50s 60s 70s 80s 90s
Years: 41 42 43 44 45 - 46 - 47 48 49 50 51
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The unit used a half cosine wave[?] (i.e. from 0 to 180 degrees repeating) or a square wave[?] (which is actually not ...
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