Physicist here... beware.
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mHz --> means millihertz,? ?10^-3 Hz
MHz --> means megahertz, 10^6 Hz?
mc? ?--> means nothing... only mc/s, i.e. megacycles per second is a measure of frequency
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:-)
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73? Alberto? I2PHD
P.S. My new software Argo V2, soon to be release, has a selectable resolution in frequency that can range down to 44.7 uHz. i.e. 44.7 millionths of a Hz...
So, not only geologists use units of measure below 1 Hz....
